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melamori03 [73]
3 years ago
12

Which expression is equivalent to the expression below?

Mathematics
2 answers:
Lelechka [254]3 years ago
8 0

d}4+4k

2(6k+4)-4(2+2k-1) writing down the question

12k+8-8-8k+4 multiplying the numbers by the coefficients

12k-8k+8-8+4 collecting like terms

4k+4 the answer

Nadya [2.5K]3 years ago
5 0

Answer:

D. 4+4k

Step-by-step explanation:

(12k +8) - (8+ 8k - 4)

12k +8 - 8 - 8k + 4

4k +4

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tangare [24]

Answer:

k=24

Step-by-step explanation:

The tangent of the function f at x=a, can be found by differentiating f w.r.t. x and then replacing x with a.

f=-x^2+8x+20

Differentiating both sides:

f'=(-x^2+8x+20)'

By sum rule:

f'=(-x^2)'+(8x)'+(20)'

By constant multiple rule:

f'=-(x^2)'+8(x)'+(20)'

By constant rule:

f'=-(x^2)+8(x)'+0

By power rule:

f'=-2x+8

f' at x=a is -2a+8

This is the slope of any tangent line to the curve f.

The slope of g is 4 if you compare it to slope intercept form y=mx+b.

So we gave -2a+8=4.

Subtracr 8 on both sides: -2a=-4

Divide both sides by -2: a=2

The tangent line to the curve at x=2 is y=4x+k.

To tind y we must first know the y-coordinate of the point of tangency.

If x=2, then

f(2)=-(2)^2+8(2)+20=-4+16+20=12+20=32

So the point is (2,32).

g(x)=4x+k and we know g(2)=32.

This gives us:

32=4(2)+k

32=8+k

k=32-8

k=24

6 0
2 years ago
A new park was designed to contain two circular gardens. Garden A has a diameter of 50 meters and Garden B has a diameter of 70
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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You have two dollars and 50 Cent the gumballs in the machine cost $.25 each right and solve an inequality represents the number
vladimir2022 [97]

Answer:

The maximum number of gumballs you can buy is 10

Step-by-step explanation:

Let

x ---->represents the number of gumballs you can buy

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