3 years ago

Help me! this is hard! i don't understand

Mathematics

1 answer:

LekaFEV [45]3 years ago

8 0

I believe AC=3 inches

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Factor completely and then place the factors in the proper location on the grid a^2-a-20

Gnoma [55]

Answer:

$(x-5)(x+4)$

Step-by-step explanation:

We have the following quadratic equation

$a^2-a-20$

The factored expression will have the following form

$(x+b)(x+c)$

Where b and c are two real numbers which when added together result in -1, and multiplying them results in -20

$b*c=-20\\b+c=-1$

You can verify that the numbers that meet this condition are:

-5 and 4

Then the factors are:

$(x-5)(x+4)$

3 0

3 years ago

What is the value of y so that order pair (-2,y) is a solution the equation 8x + y <br> =32

galina1969 [7]

8x + y = 32
8(-2) + y = 32
-16 + y = 32
y = 32 + 16
y = 48

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3 years ago

(nearest cent) $2.045 - $1.09

GaryK [48]

The answer should be $0.955

5 0

3 years ago

(2/5) to the power of 2

Artemon [7]

Answer:

4/25 or 0.16

Step-by-step explanation:

2/5 ^ 2 = 4/25

2/5 x 2/5 = 4/25 or 0.16

3 0

2 years ago

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A same side interior angle of two parallel lines is 70° greater than the other same side interior angle. Find the measures of th

Alika [10]

Answer:

125 degrees and 55 degrees

Step-by-step explanation:

8 0

3 years ago