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Mathematics

1 answer:

yan [13]2 years ago

5 0

The answer is A. The line would run through the point (-6,8) and run parallel to the x -axis, tangent to the circle.

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What is the vertex for the equation f(x)=3(x+4)^2-5

Ivahew [28]

Take derivative..
f'(x) = 3*2*(x+4)
f'(x) is must be equal to 0.
6*(x+4)=0
x=-4

for x=-4; what is the y value?
for x=-4; f(x)=-5

the vertex is (-4,-5)<span />

4 0

3 years ago

Read 2 more answers

Find the sum of the first 8 terms of the sequence: -5. 15, -45, 135, .......

MakcuM [25]

Sum of geometric sequence

for the sum where the initial value is a₁ and the common ratio is r and the term is n

$S_n= \frac{a_1(1-r^n)}{1-r}$

common ratio is -3
-5 times -3 is 15, -15 times -3=-45 etc
first term is -5
and we want the 8th term

$S_8= \frac{-5(1-(-3)^8)}{1-(-3)}$
$S_8= \frac{-5(1-6561)}{1+3}$
$S_8= \frac{-5(-6560)}{4}$
$S_8= \frac{32800}{4}$
$S_8= 8200$

the sum is 8200

7 0

2 years ago

What is the probability that a student who is not in band plays an instrument?

uranmaximum [27]

Answer:

Step-by-step explanation:

3 0

2 years ago

Could yall help please

ser-zykov [4K]

Answer:

Step-by-step explanation:

As you know, 390% is 3.9. You multiply 3.9*30 and get 117 or something. That rounds to about 120, so C.

I hoped that helped

6 0

2 years ago

Both please.........

Levart [38]

Sry I'm couldn't solve the second one but the ans for the 1st is 504 sq units

3 0

3 years ago