4 years ago

Basic Quadratic equation solving help needed!

Mathematics

1 answer:

HACTEHA [7]4 years ago

8 0

Answer:

solution and quadratic regression

Step-by-step explanation:

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7) Find the area of the shaded region:

aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

The area of the biggest rectangle =

$(9x - 2)(2x + 7) = 18 {x}^{2} + 63x - 4x - 14 = 18 {x}^{2} + 59x - 14$

The area of the of the smallest rectangle inside=

$3x(x + 12) = 3 {x }^{2} + 36x$

Then the area of the shaded region =

$18 {x}^{2} + 59x - 14 - (3 {x}^{2} + 36x) = 18 {x}^{2} + 59x - 14 - 3 {x}^{2} - 36x = 15 {x}^{2} + 23x - 14$

So, we choose B.

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3 years ago

Given f(x)=20x+11, find f(4)

kakasveta [241]

Answer:

Step-by-step explanation:

Substitute 4 in place of x

f(4)=20*4+11

f(4)=80+11

f(4)=91

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3 years ago

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lorasvet [3.4K]

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3 years ago

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What are the solutions of the quadratic equation?

Oliga [24]

Answer:

d)X=4 or x=-2

Step-by-step explanation:

X²-2x=8

X²-2x-8=0

(x-4)(x+2)=0

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X=4 or x=-2

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2 years ago

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600 thousands = how many tens?

san4es73 [151]

The answer is 60,000. because it would equal six hundred thousand, and that divided by 10 is 60,000

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3 years ago