Answer:
74
Step-by-step explanation:
[tex]5(2(10)-5)-1 \\ \\ =5(20-5)-1 \\ \\ =5(15)-1 \\ \\ =75-1 \\ \\ =74[/tex]
Find each value without using a calculator. If the expression is undefined, write undefined.
sec (-π)
The value of the expression sec (-π) is equal to -1 if the given expression is undefined.
As given in the question,
Given expression: sec (-π)
Standard position of unit circle: -π is representing semicircle with terminal point on negative x-axis with coordinates (-1, 0)
Hypotenuse = √ (-1)² + 0²
= 1
Value of the expression is given by
sec α = Hypotenuse / Base (x-coordinate)
⇒sec(-π) = 1 / -1
⇒sec(-π) = -1
Therefore, the value of the expression sec (-π) is equal to -1.
Learn more about expression here
brainly.com/question/14083225
#SPJ1
PLEASE ANSWER QUESTION IN THE SCREEN SHOT!<3
Based on the information, it should be noted that there's an increase in percentage of 30%.
How to illustrate the information?Based on the information, it should be noted that the following can be illustrated:
Original amount = 30
New amount = 39
Therefore, it should be noted that the change in percentage will be:
= Change in amount / Old amount × 100
= (39 - 30) / 30 × 100
= 9/30 × 100
= 30%
Therefore, there's a increase in percentage of 30%.
Learn more about percentages on:
brainly.com/question/24877689
#SPJ1
For a given calendar year, Mrs. Terry pays the first $2,500 of her medical expenses plus 20% of all medical expenses
over $2,500. In the equation shown, y represents the amount that she pays when x is the total dollar amount of her
medical expenses for the year.
V = 2,500 + 0.2 (x - 2,500)
for x ≥ 2,500
If y = $2,632 for this year, what is x, Mrs. Terry's total medical expenses?
The total expenses of Mrs Terry is given as $3160
How to solve for the total expensesWe have to form the equation as
2632 = 2500 + 20%(x - 2500)
We have to use the multiplicative distributive law here
Such that we would have
2632 = 2500 + 0.2x - 500
We have to rearrange the terms
2632 - 2500 + 500 = 0.2x
632 = 0.2x
Next we have to divide through by 0.2
632 / 0.2 = x
3160 = x
Hence the total expenses of Mrs Terry is given as $3160
Read more on word equation here:
https://brainly.com/question/13818690
#SPJ1
What is the solution of each exponential equation? Check your answer.
b. 5.2³x=400
Solution of exponential equation is , x = 10
What is exponential equation ?In, mathematics a exponential equation or exponential function is inverse of logarithmic function. That means, we can easily convert the logarithmic function into exponential function and vice versa. The basic form of the logarithm function can be written as [tex]a^x[/tex] .
where, a is the base of function
x defines expression
Mathematically, if [tex]log_aN = x[/tex] is an logarithmic function then, this can be converted to exponential function as [tex]a^x = N[/tex].
There are many formulas that are given to us for solving several simple and complex problems based on exponential functions and exponential equations.
Some important formulas of exponential :
[tex]a^x . a^y = a^{x+y}[/tex][tex]\frac{a^x}{a^y} = a^{x-y}[/tex][tex]a^x.b^x=(ab)^x[/tex][tex](a^x)^y = a^{xy}[/tex][tex]a^{-x} = \frac{1}{a^x}[/tex]According to given statement,
5.2³ x =400
=> 5.8 x =400
=> 40x = 400
=> x =10
Thus solution for this equation is x =10.
To know more about exponential equations, visit :
brainly.com/question/28278137
#SPJ4
The complete question is :
What is the solution of each exponential equation? Check your answer.
a. 7⁻⁴x=800
b. 5.2³x=400
Use natural logarithms to solve each equation.
e ²x=10
In [tex]e^{2x} =10[/tex] , x = 1., by the properties of logarithm.
What is Logarithm?The opposite of exponentiation is the logarithm.This indicates that the exponent to which a fixed number, base b, must be raised in order to obtain a specific number x, is represented by the logarithm of that number.A number's natural logarithm is its logarithm to the base of the transcendental and irrational number e, which is roughly equivalent to 2.718281828459.Now,
In [tex]e^{2x} =10[/tex] , taking natural logarithm on both side.
=> [tex]log_e(e^{2x})=log_e(10)[/tex]
By properties of logarithm, we know that: [tex]log_b(a)^m = m(log_b(a))[/tex]
=> [tex]2x(log_e(e))=ln(10)[/tex]
Also, as [tex]log_e(e)[/tex] = 1,
=> 2x (1) = ln(10)
=> 2x = 2.302 (approx)
=> x = 1.151
Hence, In [tex]e^{2x} =10[/tex] , x = 1.151, by the properties of logarithm.
To learn more about logarithms, refer to the link: brainly.com/question/25710806
#SPJ4
A nursery owner buys 9 panes of glass to fix some damage to hes greenhouse. The 9 panes cost 25.65 $. Unfortunately, he breaks 2 more panes while repairing the damage. What is the cost of another panes of glass?
Question content area bottom
Part 1
Another 2 panes of glass cost x $
enter your response here.
Answer:
For 2 more panes of glass it will cost $5.70.
Step-by-step explanation:
To find the price of each pane of glass you take the total price/ total panes of glass.
25.65/ 9 = $2.85.
If he wanted one more pane of glass it would be $2.85 but since you asked for two you multiply by 2 and get $5.70. Hope this helps!
What is the sum? seven-thirds plus negative three-eighths
Answer:
1/2 is the correct answer
Step-by-step explanation:
7/8 - 3/8 = 7 -3/8 = 4/8=1/2
Add one pair of parentheses or square
brackets to the left side of each equation to
make a true statement.
a) 3.5 x 4.1 3.5 2.8 = -0.7
b) 2.5+ (-4.1) + (−2.3) × (-1.1) = 4.29
c) -5.5 (-6.5) ÷ 2.4+ (-1.1) = -0.5
a. 3.5 x 4.1 (3.5 ×2.8) = -0.7
b. 2.5+ (-4.1) + [(−2.3) × (-1.1)] = 4.29
c. [-5.5 (-6.5) ÷ 2.4]+ (-1.1) = -0.5
Hence the required parentheses are added to make the statement true.
Learn more about Simplification here:
brainly.com/question/723406
#SPJ9
you and a friend are making jewelry for your friends. Bracelets cost $2.25 to make and
you spent $21.50 on supplies for necklaces. You only have $45 total to spend on supplies. Can you make bracelets for at least 10 friends? Explain your reasoning and show your work.
The fact that $45 is enough to make bracelets for 10.44 persons means that the we can make bracelets for 10 friends
What is the total necklace cost function?
The total cost of necklaces that can be made within the total budget of $45 can be modeled using a straight-line equation, which considers the fixed cost of necklace supplies of $21.50 and the total variable cost of supplies, the cost per necklace multiplied by the total number of necklaces possible, defined as x
45=21.50+2.25x
let solve for x to determine whether we can make bracelets for 10 friends
45-21.50=2.25x
23.50=2.25x
x=23.50/2.25
x=10.44
Find out more about total cost on:https://brainly.com/question/14297342
#SPJ1
Principal $960 interest rate 9% time in nine months what is the simple interest
keeping in mind that a year has 12 months, thus 9 months is really 9/12 of a year.
[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$960\\ r=rate\to 9\%\to \frac{9}{100}\dotfill &0.09\\ t=years\to \frac{9}{12}\dotfill &\frac{3}{4} \end{cases} \\\\\\ I = (960)(0.09)(\frac{3}{4}) \implies I=64.8[/tex]
0.625(x+10) -10 =x SOLVE
Just another problem I dont have time for Can someone halp? I will mark brainliest if correct. Theres some decent points as well.
The definition for the linear piecewise function is given as follows:
B.
2x + 2, x ≤ 0.-4/3x + 4, x > 0.What is a linear function?A linear function is modeled by the following rule:
y = mx + b
In which:
m is the slope, which is the rate of change, that is, the change in y divided by the change in x.b is the y-intercept, which is the the value of y when the function crosses the x-axis, that is, when x = 0.What is a piecewise-defined function?A piecewise-defined function is a function that has different definitions, depending on the input of the function.
For x to the left of 0, we have a line with intercept of 2, hence:
y = mx + 2.
When x increases by 1, y increases by 2, hence the slope is of m = 2 and:
y = 2x + 2, x ≤ 0.
For x to the right of 0, we have a line with intercept of 4, hence:
y = mx + 4.
When x increases by 3, y decreases by 4, hence the slope is of m = -4/3 and:
y = -4/3x + 4, x > 0.
Hence the definition of the function is given by:
B.
2x + 2, x ≤ 0.-4/3x + 4, x > 0.More can be learned about linear functions at https://brainly.com/question/24808124
#SPJ1
If mWVY = 70, find mYVX.
Two or more expressions with equal sign is called as Equation. If mWVY = 70 is an angle then mYVX =165 we get by solving the equation x-13=70.
What is equation?Two or more expressions with equal sign is called as Equation.
mWVY = 70
From the figure we can observe that mWVY =x-13
By this we form an equation
x-13=70
x-13=70
x=70+13
x=83.
So value of x is 83.
Now mYVX=2x-1
2(83)-1
166-1
=165
Therefore mYVX is 165 degree when mWVY = 70.
To learn more on equation click:
https://brainly.com/question/21105092
#SPJ1
lowest common multiple of 18 and 42 x
Answer:
I'm assuming you inserting the variable x was a mistake.
Step-by-step explanation:
The least common multiple of 18 and 42 is 126.
[tex]\bold{Step-by-step}[/tex]
[tex]\mathrm{"LCM"}[/tex]
[tex]18 \times 7 = 126\\42 \times 3 = 126[/tex]
Any concerns, let me know, have a great day!
Simplify each expression. y¹/₂ . y³/₁₀
Simplify the expression by applying the index rule: a^mx a^n = a^m+n.
y¹/₂ . y³/₁₀
y¹/₂ . y³/₁₀ = y¹/₂ +³/₁₀
¹/₂ +³/₁₀ = 4/5
y¹/₂ +³/₁₀ = y^ 4/5
Find out more on indices at: brainly.com/question/28595166
#SPJ4
b. What are the expressions ⁴√x³} and (⁵√y⁴) in exponential form?
Exponential Form
We've all heard the term "exponential." What does that word mean? Exponential means growing faster and faster. However, in mathematics, it represents a formula with one or more exponents. So, we know it as exponential form. I would say that things can grow exponentially as the items being talked about get bigger and faster and faster.
So, we use the following method to write the given expression in exponential.
Expression 1 = ⁴√x³
Expression 2 = ⁵√y⁴
Use n*sqrt{a}x=a^(x/n) to rewrite 4*sqrt{x}3 as x^ (3/4)
similarly, we can write the second equation as
Use n*sqrt{a}x=a^(x/n) to rewrite 5*sqrt{y}4 as y^ (4/5)
More problems that deal with writing numbers in their exponential form are in the link below.
https://brainly.com/question/6326336?referrer=searchResults
#SPJ4
Decide whether the following statements are always, sometimes, or never true.If a and b are rational numbers, then the product of (a+√b) and its conjugate is a rational number.
If a and b are rational numbers, then the product of (a+√b) and its conjugate is always a rational number.
The conjugate of ( a + [tex]\sqrt{b}[/tex] ) is ( a - [tex]\sqrt{b}[/tex] ) .
Product of ( a + [tex]\sqrt{b}[/tex] ) and ( a - [tex]\sqrt{b}[/tex] ) = ( a + [tex]\sqrt{b}[/tex] ) * ( a - [tex]\sqrt{b}[/tex] )
= ( [tex]a^{2}[/tex] ) - a[tex]\sqrt{b}[/tex] + a[tex]\sqrt{b}[/tex] - [ [tex]\sqrt{b} ^{2}[/tex] ]
= ( [tex]a^{2}[/tex]) - b .
The expression ( [tex]a^{2}[/tex]) - b is rational .
Hence , if a and b are rational numbers, then the product of (a+√b) and its conjugate is always a rational number.
To learn more on rational nos. follow link :
https://brainly.com/question/12088221
#SPJ4
What is the least common denominator (LCD) of 1/10 and 1/6?
Answer:
LCD = 30
Equivalent Fractions with the LCD
1/10 = 3/30
1/6 = 5/30
Step-by-step explanation:
Rewriting input as fractions if necessary:
1/10, 1/6
For the denominators (10, 6) the least common multiple (LCM) is 30.
LCM(10, 6)
Therefore, the least common denominator (LCD) is 30.
Calculations to rewrite the original inputs as equivalent fractions with the LCD:
1/10 = 1/10 × 3/3 = 3/30
1/6 = 1/6 × 5/5 = 5/30
The figure below is dilated by a factor of 33 centered at the origin. Plot the resulting image.
The image of the transformation is R' (-12, 3), S' (-12, 12) and T' (-6, 3)
How to determine the image of the transformation?The complete question is added as an attachment
The coordinates of the triangle are given as
R = (-4, 1)
S = (-4, 4)
T = (-2, 1)
The transformation is given as
Dilation by a scale factor of 3Centered at the originThe rule of the transformations is
(x, y) = 3(x, y)
So, we have
R' = 3 * (-4, 1) = (-12, 3)
S' = 3 * (-4, 4) = (-12, 12)
T' = 3 * (-2, 1)= (-6, 3)
Hence, the image of the transformation is R' (-12, 3), S' (-12, 12) and T' (-6, 3)
See attachment for the image of the transformation
Read more about transformation at
https://brainly.com/question/27224272
#SPJ1
Please help im stuck
The slope of the line is 1 / 3
How to find the slope of a line?The slope of a line is a measure of its steepness.
The slope of the line is the ratio of the rise to the run, or rise divided by the run.
Mathematically, the slope of a line can be described as follows;
slope = change in y / change in x
Therefore,
slope = y₂ - y₁ / x₂ - x₁
Let's take two points from the graph
(0, 2)(3, 3)
where
x₁ = 0
x₂ = 3
y₁ = 2
y₂ = 3
Hence,
slope = 3 - 2 / 3 - 0
slope = 1 / 3
Therefore, the slope of the line is 1 / 3
learn more on slope here:https://brainly.com/question/23087740
#SPJ1
A savings account pays 4.62% annual interest, compounded continuously. After approximately how many years will a principal of $ 500 double?
After approximately 16 years, the principal amount of $500 double.
What do we mean by compound interest?Compound interest is calculated by multiplying the initial principal amount by one plus the annual interest rate multiplied by the number of compound periods multiplied by one. The total initial loan amount is then deducted from the resulting value. The amount of interest added in each compounding period is determined by the interest rate, compounding period, and account balance. The basic formula is as follows: added interest = (interest rate for one period) × (balance at the beginning of the period).So, to find out how many years will a principal of $ 500 double:
Let x be the principal amount.The formula for calculating compound interest is as follows:
A = P(1 + r)^tThe value of r is 0.0462. In the equation, substitute this and x:
2x = x(1 + 0.0462)^t2 = (1.0462)^t (1.0462)^16 = (1.0462)^t t = 16Therefore, after approximately 16 years, the principal amount of $500 double.
Know more about compound interest here:
https://brainly.com/question/24924853
#SPJ4
Solve each equation.
log₇343=x
The value of x for the equation log₇343=x will be 3.
What are the basic properties of logarithmic function?Logarithmic function properties. You have encountered several characteristics during your study of algebra, including the commutative, associative, and distributive properties.
These characteristics make it easier to simplify a complex statement or equation. With logarithms, the same holds true.
For log₇343=x
It can be expressed in the form of -
343 = 7ˣ
It can be further expressed as -
7³ = 7ˣ
As base is same,
x = 3
To learn more about logarithmic functions from given link
https://brainly.com/question/13473114
#SPJ4
Solve each equation.
x²-13 x-30=0
After solving, the factors of the equation x²-13x-30=0 are:
(x-15) and (x+2)What exactly is an equation?An equation is a mathematical statement composed of two representations joined by an equal sign.An example of an equation is 3x - 5 = 16.After solving this equation, we obtain the value for the variable x as x = 7.So,
Given equation: x²-13x-30=0
Then,
x²-13x-30x²-x( - )-30x²-x( 15 - 2 )-30x²-15x+2x-30x(x-15)+2(x-15)Factors are: (x-15) and (x+2)
Therefore, after solving, the factors of the equation x²-13x-30=0 are:
(x-15) and (x+2)Know more about equations here:
brainly.com/question/2972832
#SPJ4
I NEED HELP ASAP
Which expressions are polynomials?
Select each correct answer.
(to make it easier j put A,B,C,D. u also have to picc more thn one.)
Please help me! Brainliest to the person who answers this!
The area of the rectangular fenced area for dog run is given by:
A = 4x² + 34x + 18.
What are the area and the perimeter of a rectangle?Considering a rectangle of length l and width w, we have that:
The area is given by A = lw.The perimeter is given by P = 2(l + w).For this problem, the section enclosed by the fence is divided into two triangles, as follows:
One of dimensions 8 and 2x.Another with dimensions 6 + 2x and 2x + 3.Hence the total area is:
A = 8(2x) + (6 + 2x)(2x + 3)
A = 16x + 4x² + 18x + 18
A = 4x² + 34x + 18.
Hence the area of the rectangular fenced area for dog run is given by:
A = 4x² + 34x + 18.
More can be learned about the area of a rectangle at https://brainly.com/question/10489198
#SPJ1
Expand each binomial.
(x²+2 y³)⁶
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. (x² + 2y³)⁶ is expanded as x¹² + 12x¹⁰y³ + 60x⁸y⁶ + 160x⁶y⁹ + 240x⁴y¹² + 192x²y¹⁵ + 64y¹⁸.
What is meant by binomial expansion theorem?The Binomial theorem tells us how to expand expressions of the form (a + b)ⁿ, for example, (x + y)⁷. The larger the power is, the harder it is to expand expressions like this directly.
The total number of terms in the expansion of (x + y)ⁿ are (n+1).
The sum of exponents of x and y is always n.
nC₀, nC₁, nC₂, … .., nCₙ are called binomial coefficients and also represented by C₀, C₁, C₂, ….., Cₙ.
The binomial coefficients which are equidistant from the beginning and from the ending are equal.
i.e. nC₀ = nCₙ, nC₁ = nCₙ₋₁ , nC₂ = nCₙ₋₂ ,….. etc.
Let the function be (x² + 2y³)⁶
By using binomial expansion theorem, we get
(x² + 2y³)⁶ = x¹² + 12x¹⁰y³ + 60x⁸y⁶ + 160x⁶y⁹ + 240x⁴y¹² + 192x²y¹⁵ + 64y¹⁸
(x² + 2y³)⁶ is expanded as x¹² + 12x¹⁰y³ + 60x⁸y⁶ + 160x⁶y⁹ + 240x⁴y¹² + 192x²y¹⁵ + 64y¹⁸
To learn more about binomial, refer to:
brainly.com/question/15246027
#SPJ4
1.what is the question of f(x)
2. Height of the tunnel if the road is 14ft wide by 7 ft shoulders
Answer:
Question 1
f(x) = 19 sin(x [tex]\pi[/tex]/38)
Question 2
f( 7) = 10.39ft
f(24) = 17.4ft
Step-by-step explanation:
f(x) = a sin(x+s)
x = opening length
a = amplitude
s = shift
Question 1
using half of sine
x = opening = 38ft wide
s = 19
f(x) = 19 sin(x [tex]\pi[/tex]/38)
Question 2
road width = 7 + 17 + 7 = 31
height at x = 7 or at x = 7 + 17 = 24
f( 7) = 19 sin(7 π/38) = 10.39ft
f(24) = 19 sin(24 π/38) = 17.4ft
Use a calculator to find each value. Round your answers to the nearest thousandth.
sec 2.5
please help me the question is in the picture
Answer: C, 21
Step-by-step explanation:
When Mt. St. Helens erupted in 1980, it reduced the elevation of the summit from 9,677 ft to 8,363 ft. By what percentage was the volcano's height reduced?
Answer:1314 or 13.14%
Step-by-step explanation:yes