The time it will take to cover another distance of 145 miles is; 2.5 hours
How to solve proportion word problems?
We are given;
First distance driven = 348 miles
Time taken for first distance = 6 hours
Formula for speed is;
Speed = Distance/Time taken
Thus;
Speed for fist distance = 348/6
Speed = 58 mph
Now, at the same speed she wants to cover another distance 0f 145 miles. Thus;
Time taken = distance/speed
Time taken = 145/58
Time taken = 2.5 hours
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6.2.5 What do Similar shapes tell us?
The values of the missing sides of the similar shapes are:
x = 7
y = 10
z = 20
How to Find the Side Lengths of Similar Shapes?Similar shapes have side lengths whose ratios are the same, or have proportional side lengths.
Use the following ratios to find the missing lengths of the two similar shapes in the given diagram:
35/14 = 17.5/x
Cross multiply
(35)(x) = (17.5)(14)
35x = 245
Divide both sides by 35
35x/35 = 245/35
x = 7
35/14 = 25/y
Cross multiply
(35)(y) = (25)(14)
35y = 350
35y/35 = 350/35
y = 10
35/14 = z/8
(35)(8) = 14z
280 = 14z
z = 280/14
z = 20
Therefore, the values of the missing sides of the similar shapes are:
x = 7
y = 10
z = 20
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Solve each system of equations using a matrix equation. Check your answers.
[300x-y=130 200x+y=120]
Just by adding the second row to the first one in the matrix, we can see that the solution of the system of equations is x = 0.5 and y = 20.
How to solve the system of equations?
Here we have the system of equations:
300x - y = 130
200x + y = 120
And we want to solve it using a matrix equation. Remember that we could add the two rows, subtract them, etc to remove one of the variables.
Here is really simple to see that if we add the two rows (or the two equations, depending on how you see the system) the variable y will be removed.
Then we can add the second row to the first one to get.
(300x + 200x) + (-y + y) = (130 + 120)
Now our matrix will look like:
500x + 0y = 250
200x + y = 120
With the first row we can find the value of x, it just is:
x = 250/500 = 0.5
And with taht we can find the value of y:
200*0.5 + y = 120
100 + y = 120
y = 120 - 100 = 20
Just by adding two rows, we can see that the solution of the system of equations is x = 0.5 and y = 20.
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Determine whether each function is an example of exponential growth or decay. Then find the y -intercept. y=0.1(10) x
The statement employs that Because b > 1, the function shows exponential growth. We calculate the y-intercept by substituting 0 for x and afterward solving for y.
Exponential growth is defined as:Exponential growth is the process by which quantity rises over time. It happens when the instantaneous rate of alteration of a quantity with regard to time is proportionate to the amount itself.
Apply the exponential growth formula:As a result, the exponential growth formula is: x(t) = 10,000 * (1 + 0.05)t = 10,000 * 1.05t. Here is the amount of years that have gone since 2019. In our situation, t = 11 should be used for the year 2030 because that is the lot of years between 2030 as well as the initial year 2019.
According to the given data:y=0.1(10)ˣ
y = 0.1(10)⁰
y = 0.1(1)
y = 0.1
Because b > 1, the function shows exponential growth. We calculate the y-intercept by substituting 0 for x and afterward solving for y.
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what is wrong with 4x3 7/10 = 12 7/10
The value of the fraction expression 4 x 37/10 is 14 8/10 not 12 7/10
How to determine the mistake in the computation?The equation is given as:
4 x 3 7/10 = 12 7/10
Remove the result
So, we have
4 x 3 7/10
Express 3 7/10 as an improper fraction
So, we have
4 x 37/10 = 4 x 37/10
Evaluate the product of 4 and 37
So, we have
4 x 37/10 = 148/10
Evaluate the quotient of 148 and 10
So, we have
4 x 37/10 = 14 8/10
Hence, the value of the fraction expression 4 x 37/10 is 14 8/10 not 12 7/10
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What is 3/8 as a mixed number
Answer:
3/8 is a proper fraction which means it can't be written as a mixed number
Step-by-step explanation:
If the numerator is bigger than the denominator then you can convert it to a mixed number.
Answer:
3/8 is equal to 0.375
i dont think this can be turned into a mixed number becuase the fraction isn't over 8
example: 18/8 can be changed into the mixed number 2 3/8
Step-by-step explanation:
can anyone tell me what goes with what?
Answer:
hope u will be clear from the given definition
rotation 90 clockwise about the origin B (- 2,) , C(-4,3), Z(-3,4), X (- 1,4)
The coordinates of the images of the points are B'(x, y) = (0, 2), C'(x, y) = (3, 4), Z'(x, y) = (4, 3) and X'(x, y) = (4, 1), respectively.
How to rotate points about the origin
In this problem we find four points set on Cartesian plane, each of which has to be transformed by using the following transformation rule about the origin:
(x', y') = (x · cos θ - y · sin θ, x · sin θ + y · cos θ)
Where:
(x, y) - Coordinates of the original point.
θ - Angle of rotation, in degrees.
If we know that B(x, y) = (- 2, 0), C(x, y) = (- 4, 3), Z(x, y) = (- 3, 4), X(x, y) = (- 1, 4) and θ = 90°, then the coordinates of the resulting point:
B'(x, y) = (- 2 · cos (- 90)° - 0 · sin (- 90°), - 2 · sin (- 90°) + 0 · cos (- 90°))
B'(x, y) = (0, 2)
C'(x, y) = (- 4 · cos (- 90°) - 3 · sin (- 90°), - 4 · sin (- 90°) + 3 · cos (- 90°))
C'(x, y) = (3, 4)
Z'(x, y) = (- 3 · cos (- 90°) - 4 · sin (- 90°), - 3 · sin (- 90°) + 4 · cos (- 90°))
Z'(x, y) = (4, 3)
X'(x, y) = (- 1 · cos (- 90°) - 4 · sin (- 90°), - 1 · sin (- 90°) + 4 · cos (- 90°))
X'(x, y) = (4, 1)
Finally, we proceed to graph the locations of the points, both original and resulting, by means of a graphing tool.
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I am stuck on this assignment
Answer:
1. -8/11
2. -1 3/7
Step-by-step explanation(Q1):
Using order of operations, start with parentheses and work with exponents second. Then, M/D/A/S.
[tex]5-3\\=2\\=2^{3}\\=\boxed{8}\\3^2\\=9\\=1+9-21\\1+9\\=10\\=10-21\\=\boxed{-11}\\=\frac{8}{-11}[/tex]
----------------------------------------------------------------------------------------------------
Step-by-step explanation(Q2):
Given x = 3, y = -2
[tex]4\left(3\right)\\=12\\=12+\left(-2\right)\\12+\left(-2\right)\\=12-2\\=10\\\downarrow\\2\left(-2\right)\\=-4\\=-4-3\\=\left(-4\right)-3\\=-7\\=\frac{10}{-7}\\=-\frac{10}{7}\\\\\bold{Long~Division}\\7 \div 10 = 1\\1 \times 7 = 7\\7 - 10 = 3\\= 1,R3\\\\\frac{10}{7}\\=1\frac{3}{7}\\=-1\frac{3}{7}[/tex]
Your revenue (in dollars) for selling x hamburgers is given by f(x) = 5x and your profit is $20 less than your revenue . What is your profit for 33 sales?
The profit for 33 sales is $145
What is equation?An equation is a mathematical expression that contains an equals symbol. Equations often contain algebra.
Given:
f(x) = 5x is the revenue (in dollars) for selling x hamburgers.
profit = $20 less than revenue
So, the equation for the profit is
profit = 5x - 20
Now, if sales is 33 i.e., x=33 then profit will be
profit = 5(33) - 20
profit = 165-20
profit = $145
Hence, the profit is $145
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The sum of 333 consecutive even numbers is 270270270.
What is the first number in this sequence?
The numbers are 88, 90 and 92. So the first number in this sequence is 88.
Given that
The sum of 3 consecutive even numbers is 270 .
What is consecutive numbers?
Numbers that follow each other continuously in the order from smallest to largest are called consecutive numbers.Even numbers are numbers that end with 0, 2, 4, 6 or 8. The examples of consecutive even numbers are:0, 2, 4, 6, 8, 10, 12, Odd numbers are numbers that end with 1, 3, 5, 7 or 9.Let the numbers be n, n+2, and n+4.
n+(n+2)+(n+4) = 270
3n+6 = 270
3n = 264
n = 264/3
n=88
First number = x = 88
Second number = x + 2 = 88 + 2 = 90
Third number = x + 4 = 88 + 4 = 92
Therefore, the first number is 88.
Hence, the numbers are 88, 90 and 92.
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Solve each equation. Round to the nearest ten-thousandth. log₂4 x=5
The value of x for the equation is 8 to roundoff the nearest ten-thousand = 8.0000.
In mathematics, what is a log?A logarithm is the number of powers that a number must be raised to in order to acquire another number (see Section 3 of this Math Review for more about exponents). For instance, the base ten logarithms of 100 equals 2, because ten raised towards the power of two equals 100: log 100 = 2.
Solving for x the equation log₂4 x=5.
log₂4 x=5
witting this as :
4x = 2⁵
4x = 32
x = 32/4
x = 8
The value of x for the equation is 8 to roundoff the nearest ten-thousand = 8.0000
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PLEASE HELP I WILL MARK BRAINLIST!!!!!! ITS A GEOMETRY QUESTION !!!
THank you for your time and help!! i appreciate it :)
The measure of ∠B round to the nearest whole number is 76°.
What is cosine?Cosine is the trigonometric function that is equal to the ratio of the side adjacent to the acute angle in a right angled triangle.
Mathematically,
Cos = Base/Hypotenuse
Now given that, a triangle ABC,
AB = 21
BC = 7
∠C = 90°
Thus, we have
hypotenuse = AB
Base = BC
Perpendicular = AC
So, for angle B
CosB = Base/Hypotenuse
⇒ CosB = BC/AB
Put the values we get,
⇒ CosB = 7/21
or,
CosB = Cos(75.53°)
⇒ B = 75.53°
Now the nearest whole number to 75.53° is 76°
Thus, we get
B = 76°
Thus, the measure of ∠B round to the nearest whole number is 76°.
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A frame around a rectangular family portrait has a perimeter of 106 inches. The length of the frame is 10 inches less than twice the width. Find the length and width of the frame.
Taking into account definition of perimeter and system of equations, the length and width of the frame is 32 inches and 21 inches respectively.
Definition of perimeterThe perimeter of a two-dimensional figure is the distance around the figure. That is, the perimeter of a flat geometric figure is called the length of its contour.
So, the perimeter is the measurement obtained as a result of the sum of the sides of a flat geometric figure. So to calculate the perimeter of a figure it is necessary to know two basic variables:
The number of sides of the figure.The length of each of those sides.Perimeter of a rectangleA rectangle is a flat geometric figure with four sides, of which two sides that are opposite parallel to each other have the same length and the remaining two have another length. The expression to calculate the perimeter of a rectangle is:
Perimeter= 2×(length + width)
System of linear equationsA system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.
Solving a system of equations consists of finding the value of each unknown so that all the equations of the system are satisfied.
Length and width of the frameIn this case, a system of linear equations must be proposed taking into account that:
"L" is the length of the frame."W" is the width of the frame.You know that:
The frame around a rectangular family portrait has a perimeter of 106 inches. The length of the frame is 10 inches less than twice the width.So, the system of equations to be solved is
[tex]\left \{ {{2x(L+W)=106} \atop {L=2xW-10}} \right.[/tex]
From the several methods to solve a system of equations, it is decided to solve it using the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.
In this case, substituting the second equation in the first one you get:
2×(2×W - 10 + W)=106
Solving:
2×(3×W - 10)=106
2×3×W - 2×10=106
6×W - 20=106
6×W=106 + 20
6×W=126
W=126 ÷6
W= 21
Remembering that L= 2×W - 10, you get:
L= 2×21 - 10
Solving:
L= 32
Finally, the length and width of the frame is 32 inches and 21 inches respectively.
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Find each real root. √0.49
The real root of the number √0.49 is given by 0.7.
We are given the expression:
√0.49
We need to find the root of the number.
For this, we will make the factors of the number and then solve the expression accordingly.
First, we know that 0.49 can also be written as 49 / 100
Now, we also know that:
49 = 7 × 7 and 100 = 10 × 10
So, the square root of 49 will be 7 and 100 will be 10.
So, we get the root of the number as:
√0.49 = 7 / 10
√0.49 = 0.7
Therefore, the real root of the number √0.49 is given by 0.7.
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Can someone please help me really quick
The amount of the shed that Jack would have built when Kyle finishes the shed is 8/25.
How much shed would Jack have built?A fraction is a non- whole number that consists of a numerator and a denominator. The numerator is the number above and the denominator is the number below. An example of a fraction is 1/2.
When Kyle finishes building the shed, he would have finished building 1 of the shed. In order to determine the amount of shed Kyle needs to build in order to build one shed, divide 1 by 5/8.
1 ÷ 5/8
= 1 x 8/5 = 8/5
The amount of shed that Jack will have built when Kyle finishes the shed is:
8/5 x 1/5 = 8/25
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9-(3x2)+8
how do i write this in parenthasies
Write each expression in simplest form. 5(x²/₃)⁻¹
The given expression can be written in its simplest form by using the rule of negative exponent.
As the negative exponent is applied to the second term, which also has a power, we will first multiply the powers. As we know that (x^n)^m=x^nm, hence,
(x^2/3)^-1=x^2/3*-1=x^-2/3
Now the expression will become 5x^-2/3
Now solving the second term for the negative exponent, the rule of negative exponent states that when a base term has a negative exponent, the negative sign can be solved by inversing the base term. We know that x^-a=1/x^a, therefore
5x^-2/3=5/x^2/3
The simplest form of the expression is 5(x²/₃)⁻¹=5/x^2/3
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I NEED HELPP!! ILL GIVE YOU 50 POINTS AND MORE
Answer:
7 = b.
8 = a.
Use a two dimensional model and the dimensions provided to calculate the perimeter or circumference and area of each object round to the nearest 10th if necessary
The perimeter of triangle 8 is 41 feet and 3 inches while the area is around 81.42 feet².
What is surface area?The quantity of space enclosing a three-dimensional shape's exterior is its surface area.
In other meaning, if we say side square then it is an area of the square but for a cuboid, there are 6 faces so the surface area will be external to all 6 surfaces area.
The given object is a triangle with sides of 13 ft 4 in,13 ft 4 in, and 14 ft 7 in.
A perimeter is the sum of all sides of the triangle.
There fore,
Perimeter = 13 ft 4 in + 13 ft 4 in + 4 ft 7 in
⇒ 41 feet 3 inches.
Now the area is given as 1/2 × base × height.
Here base = 14 ft 7 in and height = 11 ft 2 inch
Now,
1 inch = 1/12 ft so 7 inch = 7/12 feet and 2 inches = 2/12 feet.
So,
Area = 1/2 × (14 + 7/12) × (11 + 2/12)
Area = 81.42 feet²
Hence "The perimeter of triangle 8 is 41 feet and 3 inches while the area is around 81.42 feet²".
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What is the value of q − 7 if q = −17?
Answer:
-24
Step-by-step explanation:
-7 - 17 = -24.
Answer:
-24
Step-by-step explanation:
[tex]for~q - 7, q = -17\\-17-7\\=-24[/tex]
Help asp 50 points
The graph represents a quadratic function write an equation of the function in standard form
Answer:
[tex]f(x)=-x^2 + 11x - 24[/tex]
Step-by-step explanation:
Well for this problem, you want to start off by writing it in factored form.
In factored form, you can represent a quadratic as: [tex]f(x)=a(x-b)(x-c)[/tex], where x=b, and x=c are zeroes of the function, since plugging them into the function makes one of the factors zero, and multiplying zero by the other factors will just give you zero.
The "a" in front of the two factors generally defines the stretch/compression of the function.
So let's start by plugging in the zeroes into the function, and then we can solve for "a" later: [tex]f(x) = a(x-3)(x-8)[/tex]
Now let's use one point on the graph, which is not a root/zero to solve for "a". It's important to not use a zero/root since if we use that point the entire thing will be zero regardless of the value of "a"
Luckily we have one point provided that is not a zero and is: (4, 4)
So let's plug it in: [tex]4=a(4-3)(4-8)\\4=a(1)(-4)\\4=-4a\\a=-1[/tex]
So now let's plug this into the factored form to get: [tex]f(x)=-(x-3)(x-8)[/tex]
using foil to multiply these two factors you get: -[x^2 -8x - 3x + 24]
Now combine like terms
-[x^2 - 11x + 24]
distribute the negative sign
-x^2 + 11x - 24
[tex] \large \bf \implies{y = { - x}^{2} + 11x - 24}[/tex]
Step-by-step explanation:Let standard form of quadratic equation be
y = ax² + bx + cIf passes through (3,0) , (8,0) and (4,4)
a(3)² + b(3) + c9a + 3b + c = 0 ... (1)a(8)² + 8b + c = 064a + 8b + c = 0 ... (2)4 = a(4)² + b(4) + c16a + 4b + c = 4 ... (3)(2) - (1)64a + 8b + c - 9a - 3b - c = 0 - 055a + 5b = 0 => 55a = -5bb = -11a ... (4)(3) - (2)16a + 4b + c - 64a - 8b - c = 4 - 0-48a - 4b = 4-48a - 4(-11a) = 4 (from 4)-48a + 44a = 4 => -4a = 4 => a = -1b = -11x(-11) = 119a + 3b + c = 09(-1) + 3(11) + c = 0-9 + 33 + c = 024 + c = 0c = 0 - 24c = -24Therefore, Standard form of quadratic equation y = -x² + 11x -24If a-b=5 and a^2 - b^2= 45 find the value of a+b
Answer:
(a + b) = 9
Step-by-step explanation:
The a² - b² formula is also known as "the difference of squares formula"
It can be decomposed as follows:
a² - b² = (a - b)(a + b)
Since we are given a + b = 5 and a² - b² = 45
we have
45 = 5 (a + b)
Dividing by 5 both sides
45/5 = (a + b)
9 = (a + b)
or,
(a + b) = 9
Find the values of x and y.
X=
y=
(5x + 4)
114°
(2⁰
(3x-24)
Answer:
x=42
y=12
Step-by-step explanation:
A committee consisting of 6 men and 4 women are to be formed from 58 men and 42 women. In how many ways can this be done?
Answer: 21
Step-by-step explanation:
a scale drawing of a school bus has a scale of 1/2 in to 5 ft. if the length of the school bus is four and a half inches on the scale drawing, what is the actual length of the bus?
Answer:
45 feet
Step-by-step explanation:
Set up Ratios
1/2 in/5 ft = 4 1/2 in/x
Solve for x by cross-multiplying:
[tex]\frac{1/2}{5}[/tex] times [tex]\frac{4 1/2}{x}[/tex]
4 1/2 times 5 = 22 1/2
1/2 times x = 1/2x
22 1/2 = 1/2x
45 = X
Therefore the actual length of the bus is 45 feet.
Hope it helps :)
HELP FAST PLEASE
Question one
The grid above shows the graph of the parent function
f(x)=IxI
and a translated functions graph.
Write the equation for the translated graph.
If the equation of the parent graph, shown in the reference picture attached hereby, is [f(x) = |x|], then the equation of the translated graph will be [f(x) = (|x-2| + 1)].
Along with the question statement, we are provided with a reference attachment, which is a grid, consisting of two graphs, and the equation of the parent graph is [f(x) = |x|].
We are required to calculate the equation of the other graph, which is a translated version of the parent graph.
From the reference grid, we can clearly see that, the vertex of the parent graph is at the origin (0, 0) while that of the translated graph is at (-2, 1), i.e., the vertex translated by 2 units to the left along the x-axis and then, 1 unit upwards along the y-axis. And this translation will be followed by every point of the daughter graph.
Hence, the equation of the translated graph will be [f(x) = (|x-2| + 1)].
Translation (Cartesian geometry): In Euclidean geometry, translation is a process which moves every point of a figure, shape or space by the same distance in a given direction.To Learn more about Translation, click on the link below.
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2+5(3*4)54-10+-25*19-6=
Answer:
-429
Step-by-step explanation:
Answer:
2751
Step-by-step explanation:
2+5 times 12 times 54 minus 10 minus 475 minus 6
2+3240-10-475-6=2751
Need help with this and I also need your work shown please and thank you.
Answer:
8x+8
Step-by-step explanation:
perimeter = lengths of all sides added up
we want all sides to add up to 6x + 4
so far, we have 2x-7 and -4x + 3
side 1 + side 2 + side 3 = perimeter = 6x + 4
2x - 7 + (-4x + 3) + side 3 = 6x + 4
-2x -4 + side 3 = 6x + 4
add (2x+4) to both sides to isolate side 3
side 3 = 8x + 8
Three integers have a mean of 9, a median of 12 and a range of 13.
Find the three integers.
If three integers have a mean of 9, a median of 12, and a range of 13, then the three integers are 1, 12, and 14.
As the median is the value that's exactly in the center of a set of values, one of the three integers is 12.
Considering the first and third integers to be x and y, the range can be given as
x - y = 13
x = 13 + y
As mean can be given as,
x + 12 + y / 3 = 9
Putting x = 13 + y in this equation,
13 + y + 12 + y / 3 = 9
25 + 2y = 9 × 3
25 + 2y = 27
2y = 27 - 25
2y = 2
y = 2/2
y = 1
As,
x = 13 + y
x = 13 + 1
x = 14
Hence the three integers are calculated to be 1, 12, and 14.
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prove that tan² 20° + tan² 40° + tan² 80° = 33