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Tatiana [17]
3 years ago
9

Three times a number, subtracted from 20, is equal to -7

Mathematics
1 answer:
tia_tia [17]3 years ago
4 0
The answer is 20-3x=-7 explanation
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A cone has a diameter of 3 inches. The cone holds 12 cubic inches of water. To the nearest inch, what is the height of the cone?
Cerrena [4.2K]
Use the equation for the volume of a cone to solve for the height:
V= \frac{1}{3} \pi r^{2}h \\
12= \frac{1}{3} \pi *2.25h \\
h=5.096 inches
5 0
3 years ago
For the equation (2x - 2) (4x +4)
ss7ja [257]

Answer:

(2x - 2) (4x +4)

= 2x*4x + 2x*4 - 2*4x - 2*4

= 8x^2 + 8x - 8x - 8

= 8x^2 - 8

Your answer is correct. Great.

3 0
4 years ago
Let f(x) = 2x – 1, g(x) = 3x, and h(x) = x2 + 1. Compute the following.
Colt1911 [192]
1.  g(-1) =  -3

f(-3) =  2(-3) - 1 =  -7

2. f o h(3) :-
h(3) =  3^2 + 1 = 10
f o h(3) =   2(10) - 1 = 19

3.   f(-5) =  -11
g(f(-5)) = g(-11) = -33
7 0
3 years ago
Read 2 more answers
2.9 x 10^5 + 8.7 x 10^5
LiRa [457]

Answer:

So this is scientific notation what you do is

2.9x10^5 so you put however many zeros the is powered to 10. See there is a 5 It has to be behind or in front of the decimal you might be saying how do you know if its behind or in front well negative is in front and positive is behind .

<u><em>290,000 </em></u>there was a number already behind the decimal so there you go 5 number behind the decimal.  

Same for the second one

<u><em>290,000</em></u><em>  </em><u><em>870,000</em></u> is your answers so now you add hem together

<em><u>1,160,000 is your final answer </u></em>

Step-by-step explanation:

3 0
3 years ago
Y = x2 + 8x + 16 – 3 – 16<br> in vertex form
weeeeeb [17]

Answer:

 y = (x+4)^2 -19

Step-by-step explanation:

y = x^2 + 8x + 16 – 3 – 16

You are almost done with completing the square

y = (x^2 + 8x + 16) – 19

  = (x+4)^2 -19

This is in vertex form  y= a(x-h)^2 +k  where (h,k) is the vertex

8 0
4 years ago
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