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2 years ago

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1 answer:

Vilka [71]2 years ago

4 0

$83.60 in gross wages

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The question is:

saul85 [17]

$f(x) = \sqrt{x+1} \\ y = \sqrt{x+1} \ or \ y^2 = x+1 \ or \ x = y^2 - 1 \\ Therefore, \ f^{-1}(x)=x^2 - 1$

$(fof^{-1})(a) = f(f^{-1}(a))=f(a^2-1) \\ =\sqrt{a^2-1+1}=\sqrt{a^2}=a \\ \\ (f^{-1}of)(a)=f^{-1}(f(a))=f^{-1}(\sqrt{a+1})= \\ (\sqrt{a+1})^2-1 = a+1-1 = a$

Therefore, $(fof^{-1})(a) = (f^{-1}of)(a) = a$

8 0

2 years ago

Owen plots the numbers 4, –6, –8, and –3 on a horizontal number line. Which list shows the numbers in the order in which they wo

olga_2 [115]

Answer:-8, -6,-3, 4 is the correct answer

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Natalka [10]

Add the two bases together, divide by 2 then multiply by the height.

8+6 = 14

14/2 = 7

7x5 = 35

The area is 35 square Feet

4 0

3 years ago

The ratio of boys to girls in a class of

Fudgin [204]

Answer:

The answer is option A.

<h3>35.</h3>

Step-by-step explanation:

To find the number of girls in the class we must first find the total parts

That's

2 + 7 = 9

In the ratio 7 correspond to girls so the number of girls in the class are

7/9 × 45

= 7 × 5

= 35

Hope this helps you

8 0

3 years ago

Which pair of complex factors results in a real-number product?

Crank

we will proceed to solve each case to determine the solution of the problem

we know that

$i^{2} =-1$

<u>case A</u>. $15*(-15i)$

$15*(-15i)=-225i$

<u>The result of case A is not a real number product</u>

<u>case B</u>. $3i*(1-3i)$

$3i*(1-3i)=3i*(1)-(3i)*(3i)\\=3i-9i^{2}\\=3i-9*(-1)\\=3i+9$

<u>The result of case B is not a real number product</u>

<u>case C</u>. $(8+20i)*(-8-20i)$

$(8+20i)*(-8-20i)=8*(-8)+8*(-20i)+20i*(-8)-20i*(20i)\\=-64-160i-160i-400i^{2}\\=-64-320i-400*(-1)\\=-64-320i+400\\=336-320i$

<u>The result of case C is not a real number product</u>

<u>case D</u>. $(4+7i)*(4-7i)$

$(4+7i)*(4-7i)=4^{2} -(7i)^{2}\\=16-49i^{2}\\=16-49*(-1)\\=65\\$

<u>The result of case D is a real number product</u>

therefore

<u>the answer is the option</u>

$(4+7i)*(4-7i)$

8 0

3 years ago

Read 2 more answers