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amid [387]
3 years ago
14

X^2+13x-30 find the vertex

Mathematics
1 answer:
ra1l [238]3 years ago
6 0

Answer:

(−13/2,−289/4)

Step-by-step explanation:

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H=45t-4.9t^2 what's the max height?
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Differentiate to find time that gradient=0 45-9.8t=0 45=9.8t t =4.59 secs put this value into original equation to get 103.31
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3 years ago
Identify the volume of a sphere if it has a surface area of 465 square units
NeX [460]

Step-by-step explanation:

S.A = 465

4πr²= 465

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2 years ago
Divide the following. 3+7i/5i
marin [14]

Answer:

4.4.

Step-by-step explanation:

3+7i/5i = 4.4 .

6 0
3 years ago
1. A rabbit can hop 6 feet in 2 seconds and 12 feet in 4 seconds. If the number of feet varies directly with the time the rabbit
kykrilka [37]

Answer: The rabbit is hopping at 3 feet/ sec in speed

Step-by-step explanation:

Step 1

Let the The number of feet of the rabbit be expressed as N

AND  time rabbit spends hopping can be expressed  as  t

From the question,  The number of feet varies directly with the time rabbit spends hopping can be expressed  as

N α t

Let us introduce a constant of proportionality ,S which represents  speed in this case, we now have that

N = St

STEP 2 -- SOLVING

If the rabbit hop 6 feet in 2 seconds, Then speed =

N = St

6=  S X2

S = 6/ 2

S = 3

also

If the rabbit hop 12 feet in 4 seconds, Then speed =

N = St

12=  S X 4

S = 12/ 4

S = 3

Also recall

that Speed = Distance / time

Pluging the values in the first case,

speed = 6 feet/ 2 secconds = 3 feet/ seconds

in the second case

Speed= 12 feet/ 4 second s= 3 feet/ secs.

5 0
2 years ago
Simplify <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7B4%7D%5E%7B2%7D%20%7D%7B16%7D%20" id="TexFormula1" title=" \fra
babunello [35]

Answer: <em>1</em>

Step-by-step explanation:

\dfrac{ {4}^{2} }{16}=\dfrac{16}{16} =1

7 0
3 years ago
Read 2 more answers
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