2 years ago

Written as a simplified polynomial in standard form, what is the result when

1 answer:

8 0

$2x-8 - (2x+7)^2\\\\=2x-8 -(4x^2 + 2\cdot 2x \cdot 7 + 7^2)\\\\=2x-8-(4x^2 + 28x +49)\\\\=2x - 8 -4x^2-28x -49\\\\=-4x^2 -26x -57\\\\$

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How would I graph this?

elena55 [62]

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↝ x-intercept

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↝ y-intercept

y = -5

↝ $y\leq 2x-5$ means that the shade/area is below the graph as shown in the first picture.

$y\leq -\frac{1}{2}x-3$

↝ x-intercept

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↝ y-intercept

y = -3

↝ Since it's "≤" therefore. The shade/area is below the graph. For second picture.

First picture is first inequality

Second picture is second inequality.

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2 years ago

For what value of a do the lines 5x–2y=3 and x+y=a intersect at a point on the y-axis?

inna [77]

Answer:

a = -3/2

Step-by-step explanation:

You can set x=0 and solve for y to find the y-intercept in each case.

first equation: y-intercept = -3/2

second equation: y-intercept = a

To make these equal, we must have ...

a = -3/2

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3 years ago

At a quiz competition, for every question team A answered correctly, team B answered 2 questions correctly. The ratio of the num

a_sh-v [17]

A : B
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Read 2 more answers

8 cars (3 red, 3 blue, 2 yellow) are parked in a line, how many arrangements can be formed if all the cars of each colour are id

Ronch [10]

Answer:

the answer is 18. There are 18 ways to arrange the cars.

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3 years ago

10 x 12 – 14 + 2 + 15 =

kolbaska11 [484]

Answer:

Your answer of 10 x 12 - 14 +2+15 =123

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