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3 years ago

What’s -(-2) to the third power i I have to show work too and I don’t understand it and I t has to be evaluated

Mathematics

2 answers:

trapecia [35]3 years ago

6 0

Answer:

Step-by-step explanation:

-(-2)³ = -1(-2)³ = 2³ = 8

kirza4 [7]3 years ago

5 0

Answer:

-(-2) to the third power is 8.

Step-by-step explanation:

You distribute the negative to the negative 2, then you cube it to the third power to get 8.

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What is the cost of each stick of butter if 1lb is 4 sticks?

schepotkina [342]

Answer: Too little information

We need to know how much the butter costs per pound.

4 0

3 years ago

A ball is kicked in the air. The height of the ball can be calculated using the equation h(t) =-16t^2+64t+190, where h is in hei

gregori [183]

Answer:

Therefore the ball strikes the ground 5.98 s after kick.

Step-by-step explanation:

Given that , a ball is kicked in the air. The height of the ball can be calculated using the equation $h(t)=-16t^2+64t+190$ where h is height in feet and t is time in second.

When the ball touches the ground then the height will be zero.

i.e h(t)=0

Therefore

$-16t^2+64t+190=0$

$\Rightarrow -2(8t^2-32t-95)=0$

Since -2≠0 then $(8t^2-32t-95)=0$

$(8t^2-32t-95)=0$

[The solution of a quadratic equation ax²+bx+c=0 is

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$ here a=8, b=-32 and c=-95]

$\Rightarrow t =\frac{-(-32)\pm\sqrt{(-32)^2-[4\times8\times(-95)]} }{2\times8}$

$\Rightarrow t =\frac{32\pm\sqrt{4064} }{16}$

Therefore t= 5.98 or -1.98

since time can not be negative So , t=5.98 s

Therefore the ball strikes the ground 5.98 s after kick.

5 0

3 years ago

Emily has 300 books. if frank were to double the number of books that he now owns, he would still have fewer than Emily has

Alex_Xolod [135]

This statement is false.
If he were to double the amount that Emily has to get franks, franks would have more.
Look :)
Emily's = 300
Frank's = 300 x 2 = 600

now...
Emily's = 300
Frank's = 600

So frank has more! NOT fewer.

8 0

3 years ago

Read 2 more answers

40 POINTS !! 40 POINTS !!<br><br> PLEASE HELP , DONT SKIP !<br><br> NO LINKS OR FILES.

Viktor [21]

Answer:

36?

Step-by-step explanation:

split in two, triangle 6x6=36/2=18, rectangle 6x3=18, whole 18+18=36 your answer is 36

3 0

3 years ago

HELP PLEASE

kolezko [41]

Answer: 16 feet is the width and 25 is length

Step-by-step explanation:

x*(2x-7)=400

Word problem written in numerical form^^^^

Solve for x to get 16

length = 2(16)-7= 25

Check our work

16*25=400 yay

6 0

3 years ago