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3 years ago

Find the square of each number -11

Mathematics

1 answer:

zysi [14]3 years ago

6 0

(-11) x (-11) = 121

The answer is 121

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I NEED HELP PLEASE !!!!

Darya [45]

Answer:

a and c

Step-by-step explanation:

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3 years ago

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If f(x) =69-15x then f(f^-1(x))

xenn [34]

If f(x)=69-15x then $f(f^{-1}(x))=x$

Given :

$f(x)=69-15x\\$

Lets find out $f^{-1}(x)$ . The steps to find out f inverse are

Replace f(x) by y

$y=69-15x\\Interchange \; the \; variables\\x=69-15y\\solve \; for \; y\\x-69=-15y\\Divide \; by \; -15\\\frac{-x+69}{15} =y\\Replace \;y \;with \; f^{-1}\\f^{-1}=\frac{-x+69}{15}$

Now we find $f(f^{-1}(x))$

Replace inverse function in the place of x in f(x)

$f(f^{-1}(x))=f(\frac{-x+69}{15} )=69-15(\frac{-x+69}{15})=69-(-x+69)=69+x-69=x\\f(f^{-1}(x))=x$

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3 years ago

The circumference is 1 mile. What is the diameter?

iren2701 [21]

Answer:

Step-by-step explanation:

circumference = 2* pi * radius = 1

-> radius = 0.1592 mile

> diameter = 2* radius = 0.31847 mile

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3 years ago

Anumeha is mowing the lawns for a summer job. For every mowing job, she charges and initial fee of $10 plus a constant fee for e

ExtremeBDS [4]

Answer:

F(t) = 10 +5t

Step-by-step explanation:

Income equals the initial fee plus the hours worked times the hourly rate

We know the initial fee = 10

hours = t

hourly rate =r

F(t) = 10 + r*t

We know a 5 hour job is 35 dollars

35 = 10 + r*5

Subtract 10 from each side

35-10 = 10-10 +5r

25 = 5r

Divide by 5

25/5 = 5r/5

5 =r

The hourly rate is 5

F(t) = 10 +5t

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3 years ago

Kate made an 85 on her English test. Her grade on the English test was 37 points less than twice the grade on her Science test.

Irina18 [472]

The grade of her sci test was 61. First I add 37 to 85, the sum being 122. Then if you divide it in half, you get the quotien and final answer of 61

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3 years ago

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