Please help me with the 2 math questions and please include an explanation as well. Thank you!
I will delete answers that incomplete or has no explanation.
Answers
Answer:
13) 4.9 m
14) 0.9 m
Step-by-step explanation:
Question 13The given diagram shows the height of the same cactus plant a year apart:
Year 1 height = 1.6 mYear 2 height = 2 mWe are told that the cactus continues to grow at the same percentage rate. To calculate the growth rate per year (percentage increase), use the percentage increase formula:
[tex]\begin{aligned}\sf Percentage \; increase &= \dfrac{\sf Final\; value - Initial \;value}{\sf Initial \;value}\\\\&=\dfrac{ 2-1.6}{1.6}\\\\&=\dfrac{0.4}{1.6}\\\\&=0.25\end{aligned}[/tex]
Therefore, the growth rate of the height of the cactus is 25% per year.
As the cactus grows at a constant rate, we can use the exponential growth formula to calculate its height in Year 6.
[tex]\boxed{\begin{minipage}{7.5 cm}\underline{Exponential Growth Formula}\\\\$y=a(1+r)^t$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the initial value. \\ \phantom{ww}$\bullet$ $r$ is the growth factor (in decimal form).\\ \phantom{ww}$\bullet$ $t$ is the number of time periods.\\\end{minipage}}[/tex]
The initial value is the height in Year 1, so a = 1.6.
The growth factor is 25%, so r = 0.25.
As we wish to calculate its height in Year 6, the value of t is t = 5 (since there are 5 years between year 1 and year 6).
Substitute these values into the formula and solve for y (the height of the cactus):
[tex]\begin{aligned}y&=a(1+r)^t\\&=1.6(1+0.25)^5\\&=1.6(1.25)^5\\&=1.6(3.0517578125)\\&=4.8828125\\&=4.9\; \sf m\;(nearest\;tenth)\end{aligned}[/tex]
Therefore, if the cactus continues to grow at the same rate, its height in Year 6 will be 4.9 meters (to the nearest tenth).
Check by multiplying the height each year by 1.25:
Year 1 = 1.6 mYear 2 = 1.6 × 1.25 = 2 mYear 3 = 2 × 1.25 = 2.5 mYear 4 = 2.5 × 1.25 = 3.125 mYear 5 = 3.125 × 1.25 = 3.09625 mYear 6 = 3.09625 × 1.25 = 4.8828125 m[tex]\hrulefill[/tex]
Question 14The given diagram shows the height of the same snowman an hour apart:
Initial height = 1.8 mHeight after an hour = 1.53 mWe are told that the snowman continues to melt at the same percentage rate. To calculate the decay rate per hour (percentage decrease), use the percentage decrease formula:
[tex]\begin{aligned}\sf Percentage \; decrease&= \dfrac{\sf Initial\; value - Final\;value}{\sf Initial \;value}\\\\&=\dfrac{1.8-1.53}{1.8}\\\\&=\dfrac{0.27}{1.8}\\\\&=0.15\end{aligned}[/tex]
Therefore, the decay rate of the snowman's height is 15% per hour.
As the snowman melts at a constant rate, we can use the exponential decay formula to calculate its height after another 3 hours.
[tex]\boxed{\begin{minipage}{7.5 cm}\underline{Exponential Decay Formula}\\\\$y=a(1-r)^t$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the initial value. \\ \phantom{ww}$\bullet$ $r$ is the decay factor (in decimal form).\\ \phantom{ww}$\bullet$ $t$ is the number of time periods.\\\end{minipage}}[/tex]
The initial value is the snowman's initial height, so a = 1.8.
The decay factor is 15%, so r = 0.15.
As we wish to calculate the snowman's height after another 3 hours, the value of t is t = 4 (i.e. the first hour plus a further 3 hours).
Substitute these values into the formula and solve for y (the height of the snowman):
[tex]\begin{aligned}y&=a(1-r)^t\\&=1.8(1-0.15)^4\\&=1.8(0.85)^4\\&=1.8(0.5220065)\\&=0.93961125\\&=0.9\; \sf m\;(nearest\;tenth)\end{aligned}[/tex]
Therefore, if the snowman continues to melt at the same rate, its height after another 3 hours will be 0.9 meters (to the nearest tenth).
Check by multiplying the height each hour by 0.85:
Initial height = 1.8 mHeight after 1 hour = 1.8 × 0.85 = 1.53Height after 2 hours = 1.53 × 0.85 = 1.3005Height after 3 hours = 1.3005 × 0.85 = 1.105425Height after 4 hours = 1.105425 × 0.85 = 0.93961125Related Questions
What is the correct order of the functions from least to greatest according to the average rate of
change on the interval from x=-1 to x-3? (2 points)
Answers
The correct option is the second one, the order is:
g(x), f(x), h(x).
How to find the rates of change?To find the rate of change for a function f(x) on an interval [a, b] we need to get:
R = (f(b) - f(a))/(b - a)
Here the interval is [-1, 3]
The first function is:
f(x)= (x + 3)² - 2
Evaluating we get:
f(-1) = (-1 + 3)² - 2
f(-1) = 2² - 2 = 4 -2 = 2
and f(3) = (3 + 3)² - 2 = 34
Then the rate is:
R = (34 - 2)/(3 + 1) = 8
For g(x) we can use the graph, we have:
R = (0 + 2)/4 = 1/2
For the last function we need to use the table, then we will get:
R = (62 - 14)/(3 + 1) = 12
Then the order, from least to greatest is:
g(x), f(x), h(x).
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Identify the axis of symmetry, vertex, and range for the quadratic function.
Answers
1. What are two significant advantages of a 401(k) over an IRA?
Answers
Here are two significant advantages of a 401(k) over an IRA:
Higher Contribution LimitsEmployer Contributions and MatchingThe two significant advantages of a 401(k) over an IRAHigher Contribution Limits: 401(k) plans allow for higher annual contributions compared to IRAs. The contribution limit for a 401(k) is $19,500 (or $26,000 for individuals aged 50 and older), while the limit for an IRA is $6,000 (or $7,000 for individuals aged 50 and older).
Employer Contributions and Matching: 401(k) plans often offer employer contributions and matching programs. Employers may contribute to an employee's 401(k) account, adding to their retirement savings without any direct cost to the employee.
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Aubree owns a small business selling clothing. She knows that in the last week 69 customers paid cash, 2 customers used a debit card, and 7 customers used a credit card. Based on these results, express the probability that the next customer will pay with something other than cash as a percent to the nearest whole number.
Answers
The probability that the next customer will pay with something other than cash, rounded to the nearest Whole number, is approximately 12%.
The probability that the next customer will pay with something other than cash, we need to consider the total number of customers who paid with something other than cash and divide it by the total number of customers in the last week.
In the given information, it is stated that 69 customers paid with cash, 2 customers used a debit card, and 7 customers used a credit card. To find the total number of customers who paid with something other than cash, we add the number of customers who used a debit card and the number of customers who used a credit card:
Total number of customers who paid with something other than cash = Number of customers who used a debit card + Number of customers who used a credit card
= 2 + 7
= 9
Now, to calculate the probability, we divide the number of customers who paid with something other than cash by the total number of customers:
Probability = Number of customers who paid with something other than cash / Total number of customers
= 9 / (69 + 2 + 7)
= 9 / 78
= 0.1154 (rounded to four decimal places)
To express the probability as a percentage, we multiply the probability by 100:
Probability as a percent = 0.1154 * 100
≈ 11.54
Therefore, the probability that the next customer will pay with something other than cash, rounded to the nearest whole number, is approximately 12%.
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Angles A and B are supplementary. Determine the measure of angle A if the measure of angle B is 113.8°.
Answers
Answer:
m<A = 66.2°
Step-by-step explanation:
m<A + m<B = 180°
m<B = 113.8°
m<A + 113.8° = 180°
m<A = 180° - 113.8°
m<A = 66.2°
A circle is inscribed inside a square of a side length of 10 cm. What is the area inside the square and outside the circle
Answers
Answer:
The figure is omitted--please sketch it to confirm my answer.
[tex]\pi {(5 \sqrt{2}) }^{2} - {10}^{2} [/tex]
[tex]50\pi - 100 = 50(\pi - 2) = 57.08[/tex]
The area inside the square and outside the circle is about 57.08 cm^2.
What is the lateral surface area of the triangular prism below?
Answers
The lateral surface area of the triangular base prism is 288 m².
How to find the lateral area of a triangular prism?The lateral area of the triangular base prism can be found as follows:
Lateral area of the triangular base prism = (a + b + c)h
where
a, b and c are the side of the triangleh = height of the prismTherefore,
a = 7 m
b = 8 m
c = 9 m
h = 12 m
Therefore,
Lateral area of the triangular base prism = (7 + 8 + 9)12
Lateral area of the triangular base prism = 24 × 12
Lateral area of the triangular base prism = 288 m²
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A dinner theater has fixed costs of $1,000 per day. It costs the dinner theater $10 per person for food and a
ticket to the dinner theater costs $30. How many tickets does the dinner theater have to sell in order to break
even?
50 tickets
O 10 tickets
O 100 tickets
O20 tickets
Answers
pls, I need help fast !!! here are questions 5 and 6
Answers
5. The minimum value of g(x) is -8.
The maximum value of g(x) is 17.
6. The average rate of change of the function g(x) over the interval [-2, 3] is 5.
How to determine the maximum and minimum value?By critically observing the table representing the function g(x), we can logically deduce the following minimum value and maximum value over the interval [-2, 3];
When x = -2, the minimum value of g(x) is equal to -8.
When x = 0, the maximum value of g(x) is equal to 17.
Question 6.
In Mathematics, the average rate of change of f(x) on a closed interval [a, b] is given by this mathematical expression:
Average rate of change = [f(b) - f(a)]/(b - a)
Next, we would determine the average rate of change of the function g(x) over the interval [-2, 3]:
a = -2; f(a) = -8
b = 3; f(b) = 17
Average rate of change = (17 + 8)/(3 + 2)
Average rate of change = 25/5
Average rate of change = 5
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Ayuda operaciones y respuesta es para ahora
Answers
The perimeter of the given window is 48 centimeter.
From the given figure,
Perimeter of window = 2(Length+Breadth)
= 2(10+14)
= 2×24
= 48 centimeter
Perimeter of house = 2(Length+Breadth)
= 2(37+35)
= 2×72
= 144 centimeter
Perimeter of roof = 2(Length+Breadth)
= 2(37+5)
= 2×42
= 84 centimeter
Therefore, the perimeter of the given window is 48 centimeter.
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Erica bought a road bike using the store’s payment plan. She made a $320 down payment and makes monthly payments of $91. If the total cost is $1,867, how many months will Erica be paying for the bike?
Answers
$1,867 - $320 = $1,547
Each month, Erica pays $91 towards the cost of the bike. To find out how many months she will be paying, we need to divide the remaining cost by the monthly payment:
$1,547 ÷ $91/month ≈ 17 months
So Erica will be paying for the bike for approximately 17 months.
Answer: 17 months
Step-by-step explanation:
Total cost of the bike = $1,867
Down payment = $320
so $1,867 - $320 = $1,547
$91 * 17 = 1,547
(17 = months) so $91 * 17 months = 1,547
In the figure below, S is the center of the circle. Suppose that JK = 19, LK = 3x+ 1, SN = 12, and SP= 12. Find the
for
Answers
In the figure, applying perpendicular bisector theorem for chords in a circle, the value of JN = 9 1/2
How to find JN in the figureThe perpendicular bisector theorem for chords in a circle states that if a radius of a circle is perpendicular to a chord, then it bisects the chord.
In other words, the radius divides the chord into two equal segments.
This theorem is a direct consequence of the properties of perpendicular lines and congruent triangles.
applying this to the figure
JN = JK/2
JN = 19/2
JN = 9 1/2
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The revenue in dollars of a shoe store is modeled by the expression -4.1x² + 9x + 1,325 where x is the number of shoes sold. The cost of selling the shoes is modeled by the expression -10.1x² - 9.6x +10,000. What simplified expression models the profit in
dollars of the company as a function of x?
Answers
The sound emitted from the jet plane has a sound intensity of approximately 149.13 decibels.
How to find determine the expression models the profit in dollars of the company as a function of xUsing the formula:
D = 10 * log(I/I0),
where D represents the sound intensity in decibels, I is the given sound intensity, and I0 is the reference intensity of 10^-12 watts per square meter.
Substituting the given values:
D = 10 * log(8.2*10^2 / 10^-12).
To simplify the calculation, we can rewrite the division as multiplication by the reciprocal:
D = 10 * log(8.2*10^2 * 10^12).
Using the logarithm property log(a * b) = log(a) + log(b):
D = 10 * (log(8.2) + log(10^2) + log(10^12)).
Using the logarithm property log(a^b) = b * log(a):
D = 10 * (log(8.2) + 2 * log(10) + 12 * log(10)).
Since log(10) = 1:
D = 10 * (log(8.2) + 2 + 12).
D = 10 * (log(8.2) + 14).
Using a calculator or logarithm table, we can find log(8.2) ≈ 0.913.
D = 10 * (0.913 + 14).
D = 10 * 14.913.
D ≈ 149.13.
Therefore, the sound emitted from the jet plane has a sound intensity of approximately 149.13 decibels.
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What is the measure of angle T and angle V?
Answers
The measures of angle T and angle V are T = 90 and V = 90
How to determine the measure of angle T and angle V?From the question, we have the following parameters that can be used in our computation:
The circle
The point T and V are at the tangent of the circle
By definition, the tangent is perpendicular to the radius of the circle, with which it intersects.
This means that the angle T and angle V are right angled
Using the above as a guide, we have the following:
T = 90 and V = 90
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Simplify the following expression.
(6m5g5) 2
Answers
The simplified exponential expression in the context of this problem is given as follows:
[tex](6m^5g^5)^2 = 32m^{10}g^{10}[/tex]
How to simplify the exponential expression?The exponential expression in the context of the problem is defined as follows:
[tex](6m^5g^5)^2[/tex]
The power of a power rule is used when a single base is elevated to multiple exponents, and states that simplified expression is obtained keeping the base, while the exponents are multiplied.
Applying the exponent of 2, we have that:
6² = 36.5 x 2 = 10.Hence the simplified exponential expression in the context of this problem is given as follows:
[tex](6m^5g^5)^2 = 32m^{10}g^{10}[/tex]
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Use the hundredths grid to answer the question. A 10 by 10 grid is shown. 4 columns and 7 squares are shaded. 2 columns and 5 squares are shaded. Which equation is shown by the shaded area of the model? A. 0 . 29 + 0 . 43 = 0 . 72 B. 0 . 43 + 0 . 22 = 0 . 65 C. 0 . 47 + 0 . 25 = 0 . 72 D. 0 . 23 + 0 . 42 = 0 . 65
Answers
Answer:
What the other guy said
Step-by-step explanation:
50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answers
Appling the tangent of circle properties, the length of RS is solved to be
C. 13 in
How to find the length of the tangentTo find the length of the tangent named RS, we applied the tangent of a circle property which says that the length of tangents to a particular point are equal
This leads to the mathematical equation represented below
SR = 7 in + 6 in
SR = 13 in
thus we can say that length of the tangent SR = 13 in
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100 Points! Algebra question. Photo attached. Please show as much work as possible. Thank you!
Answers
The missing angles are m ∠1 = 53° and m ∠k = 12°.
Given that are two circles we need to find the missing measures,
Using the concept of intersecting chords angles,
When two chords intersect inside a circle, the angle between the chords is half the sum of the intercepted arcs.
And,
When two chords intersect outside a circle, the angle between the chords is half the difference of the intercepted arcs.
So,
a) m ∠1 = 1/2 [arc LP + arc RQ]
m ∠1 = 1/2 [50°+56°]
m ∠1 = 1/2 × 106°
m ∠1 = 53°
b) m ∠k = 1/2 [arc MJ - arc LR]
arc LR = 360° - [72° + 100° + 140°]
arc LR = 48°
So,
m ∠k = 1/2 [72° - 48°]
m ∠k = 12°
Hence the missing angles are m ∠1 = 53° and m ∠k = 12°.
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Which statements are true regarding the expression below? Choose three answers. 8 ^-1. 8 ^-3. 8
Answers
The statements that are true regarding the expression with the exponents -1, -3, and 1 are;
An equivalent expression is 8⁷·8⁻¹⁰The sum of the exponent is -3The value of the expression is 1/512What is an exponent?An exponent is a quantity or power to which a value, expression or number is to be raised.
The specified expression can be presented as follows;
8⁻¹ × 8⁻³ × 8
Therefore; 8⁻¹ × 8⁻³ × 8 = 8⁽⁻¹ ⁺ ⁻³ ⁺ ¹⁾ = 8⁻³ = 1/8³
The sum of the exponent is; -1 + (-3) + 1 = -31/8³ = 1/512
Therefore, the value of the expression is; 1/512Similarly, we get; 8⁷ × 8⁻¹⁰ = 8⁽⁷ ⁻ ¹⁰⁾ = 8⁻³ = 1/8³
Therefore, 8⁷ × 8⁻¹⁰ and 8⁻¹ × 8⁻³ × 8 are equivalent expressionsLearn more on exponents here: https://brainly.com/question/29831670
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An office 8.5m long and 6.3m wide is to be carpeted to leave a surrounding 60 cm wide around the carpet, what is (a) the area of the office (b) the area of the carpet (c) the area of the surrounding
Answers
(a) The area of the office is 53.55 meters square.
(b) The area of the Carpet would be 52.6656 meters square.
(c) The area of the surrounding is 0.8844 meters square.
Area of the office floor= Length × Breadth
= 8.5 meters × 6.3 meters
= 53.55 meters square
Area of the Carpet = Length × Breadth
= (8.5-0.06) meters × (6.3-0.06) meters
Since, 60 cm = 0.06 meters
Because 1 meter = 100 cm
= 52.6656 meters square
Area of surrounding = Area of Office floor - Area of Carpet
= 53.55 meters square - 52.6656 meters square
= 0.8844 meters square
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50 points, pls answer
Is it possible for a satellite to see
of the Earth’s equator? Why or why not?
11-94.
Answers
a. The image is attached below.
b. Length of the equator is 24,000 miles.
c. The image is attached below.
d. No, it is not possible for a satellite to see 50% of the Earth's equator.
Satellite B will see more of the Earth's equator than Satellite A. This is because the viewing angle of Satellite B is larger than the viewing angle of Satellite A. The viewing angle of Satellite B is 60 degrees, while the viewing angle of Satellite A is 45 degrees.
The length of the equator in view of Satellite B is 24,000 miles. This can be calculated using the following formula:
length of the equator = 2 * [tex]\Pi[/tex] * radius * sin(m/2)
Use a third color to draw the viewing angle from Satellite C. Label the points of tangency J and K. If m/C=45", find the mJK and mJZK
This is because the Earth is a sphere, and a sphere has no flat surfaces. A satellite can only see a portion of the Earth's surface, and the portion that it sees will always be less than 50% of the total surface area.
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After drawing a square on the board, Mr. Hinkle asked his class to identify the shape. Timothy stated that Mr. Hinkle had drawn a rhombus. Which of the following statements is true?
Answers
Find the derivative of f(w) = 2/(w^2-4)^5
Answers
The derivative of function f(w) = [tex]2/(w^2 - 4)^5 ~is ~f'(w) = -40~w~(w^2 - 4)^{-6}.[/tex]
We have,
To find the derivative of the function [tex]f(w) = 2/(w^2 - 4)^5[/tex], we can use the chain rule and the power rule for differentiation.
Let's go through the steps:
First, rewrite the function as [tex]f(w) = 2(w^2 - 4)^{-5}.[/tex]
Now, let's differentiate f(w) with respect to w:
[tex]f'(w) = d/dw~ [2(w^2 - 4)^{-5}][/tex]
To apply the chain rule, we need to differentiate the outer function and multiply it by the derivative of the inner function.
Using the power rule, the derivative of (w² - 4) with respect to w is 2w.
Applying the chain rule:
[tex]f'(w) = -10 \times 2(w^2 - 4)^{-6} \times 2w[/tex]
Simplifying further:
[tex]f'(w) = -40w(w^2 - 4)^{-6}[/tex]
Therefore,
The derivative of function f(w) = [tex]2/(w^2 - 4)^5 ~is ~f'(w) = -40~w~(w^2 - 4)^{-6}.[/tex]
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50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answers
Answer: D = 100π square units
Step-by-step explanation:
The formula to calculate the circumference of a circle is C = 2πr, where C is the circumference and r is the radius of the circle.
In this case, we have a circumference of 20π units, so we can set up the equation as follows:
20π = 2πr
To find the radius, we can divide both sides of the equation by 2π:
r = (20π) / (2π)
Simplifying further:
r = 10
Now that we have the radius, we can calculate the area of the circle using the formula A = πr^2:
A = π * (10)^2
A = π * 100
A = 100π
given the function f(x)=logbase2(X), find the y-intercept of g(x) = f(x+4)+8
Answers
The y-intercept of f(x + 4) + 8 is given as follows:
10.
What is a translation?A translation happens when either a figure or a function is moved horizontally or vertically on the coordinate plane.
The four translation rules for functions are defined as follows:
Translation left a units: f(x + a).Translation right a units: f(x - a).Translation up a units: f(x) + a.Translation down a units: f(x) - a.The parent function for this problem is given as follows:
[tex]f(x) = \log_2{x}[/tex]
The translated function is then given as follows:
[tex]g(x) = \log_2{x + 4} + 8[/tex]
The y-intercept of the function is the numeric value at x = 0, hence:
[tex]g(0) = \log_2{0 + 4} + 8[/tex]
g(0) = 2 + 8 = 10.
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A wagon is pulled with a force of 80 pounds by a handle that
makes an angle of 20° with the horizontal.
A
What is the horizontal component of the force correct to the
nearest tenth?
27.4
B
75.2
80
20°
C
76.2
D 76.4
Answers
Explanation:
The horizontal component is found using cos fxn
80 x cos 20 = 75.2 pounds
Hello, someone help me with this integral, it gets complicated when they are like this, please help, I need it to pass: c
.....dx
∫ --------
...1−25x²
Answers
Answer:
∫(1 - 25x²) dx
Step-by-step explanation:
100 Points! Geometry question. Photo attached. Find x and y in the right triangle. Please show as much work as possible. Thank you!
Answers
Answer:
x = 10.5
y =5.25
Step-by-step explanation:
sin60° = 21√3/x
√3/2 = 21√3/x
=> x = 21√3/√3/2 = 10.5
cos60° = y/x
1/2 = y/10.5
y = 10.5/2 = 5.25
Some friends start jumping rope during recess at 12:22.They jump rope for 24 minutes.Show and write the they stop jumping rope.Circle A.M or P.M.
Answers
Answer:
They would stop jumping rope at 12:46
Step-by-step explanation:
I'd probably say P.M considering the fact that I don't think kids would be having recess at midnight
Solve for x |x| = 4
Answers
Answer:
x = 2
Step-by-step explanation:
You want the value of x that satisfies x|x| = 4.
DomainThe absolute value function splits the domain of the equation into two parts.
For x < 0, the equation is ...
x(-x) = 4
x² = -4
There are no real solutions in this domain.
For x ≥ 0, the equation is ...
x² = 4
x = √4 = 2
The only solution is x = 2.
__
Additional comment
In the attachment, we have rewritten the equation to ...
x|x| -4 = 0
The graphing calculator readily identifies x-intercepts, so this is a convenient way to find the solution. You will notice that for x < 0, the graph is of -x²-4, which is never zero.
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