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3 years ago

PLS PLS PLS PLS PLS PLS HELP I NEED THIS QUICK BY THIS FRIDAY!!!!!

Mathematics

2 answers:

kvv77 [185]3 years ago

6 0

12) 9 that would be the answer

abruzzese [7]3 years ago

4 0

10. -1,-6
11. 1,6
12. 9
13. 6
14. 18

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What is the measure of a Pentagon

Mashutka [201]

Answer:

5 sides.

Step-by-step explanation:

Unlike a triangle, which is 180°, also equal to a straight line, the length is equal to 540°.

6 0

2 years ago

Read 2 more answers

F:[1/2,infinity)—>[3/4,infinity) <br> f(x)=x^2-x+1 <br> find the inverse of f(x);please explain

dexar [7]

Answer:

$f^{-1}(x)=\frac{1}{2}+\sqrt{x-\frac{3}{4}}$

Step-by-step explanation:

y=x^2-x+1

We want to solve for x.

I'm going to use completing the square.

Subtract 1 on both sides:

y-1=x^2-x

Add (-1/2)^2 on both sides:

y-1+(-1/2)^2=x^2-x+(-1/2)^2

This allows me to write the right hand side as a square.

y-1+1/4=(x-1/2)^2

y-3/4=(x-1/2)^2

Now remember we are solving for x so now we square root both sides:

$\pm \sqrt{y-3/4}=x-1/2$

The problem said the domain was 1/2 to infinity and the range was 3/4 to infinity.

This is only the right side of the parabola because of the domain restriction. We want x-1/2 to be positive.

That is we want:

$\sqrt{y-3/4}=x-1/2$

Add 1/2 on both sides:

$1/2+\sqrt{y-3/4}=x$

The last step is to switch x and y:

$1/2+\sqrt{x-3/4}=y$

$y=1/2+\sqrt{x-3/4}$

$f^{-1}(x)=1/2+\sqrt{x-3/4}$

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2 years ago

12.

pashok25 [27]

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3 years ago

Find all zeros of 2x4 - 5x3 + 53x2 - 125x + 75=0

ser-zykov [4K]

Retire zero la bour li dan trou fess to pu ggnr bon

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3 years ago

A serving size for pineapple-orange punch is 1/2 cup. Liam needs to make 72 servings of punch. He will use 8 pints of pineapple

Luden [163]

Since a serving is 1/2 cup and he needs 72 servings you can multiply 72 by 1/2 and find out that he needs to make 36 cups of punch. Two cups is a pint so he needs (36 / 2) 18 pints of juice. He already has the 8 pints of pineapple juice so 18 - 8 leaves 10 pints of orange juice.

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2 years ago