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3 years ago

I NEED HELP ASAP PLS ANSWERR

Mathematics

1 answer:

Ratling [72]3 years ago

7 0

It’s either A or D I think

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Chris ran 40 yards in 4.24 seconds what is the rate of speed

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Distance divided by time is speed. To find the rate of speed, divide 40 yards by 4.24 seconds which is approximately 9.43 yards per second. 9.43 yards per second is the rate of speed.

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3 years ago

(ab+3)^2 find the product

Alenkasestr [34]

Answer :

(ab+3)2

Steps :

Final result :

(ab + 3)2

Step by step solution :

Step 1 :

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3 years ago

Are two lines parallel, perpendicular or neither 3x+7y=15 and 7x-3y=6

maw [93]

Answer:

The lines are perpendicular

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are equal

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

we have

$3x+7y=15$ ----> equation A

isolate the variable y

$7y=-3x+15$

Divide by 7 both sides

$y=-\frac{3}{7}x+\frac{15}{7}$

The slope of the line A is $m_A=-\frac{3}{7}$

$7x-3y=6$ ----> equation B

isolate the variable y

$3y=7x-6$

Divide by 3 both sides

$y=\frac{7}{3}x-2$

The slope of the line B is $m_B=\frac{7}{3}$

Compare the slope of both lines

$m_A=-\frac{3}{7}$

$m_B=\frac{7}{3}$

$m_A \neq m_B$ ----> the lines are not parallel

Find the product of the slopes

$-\frac{3}{7}(\frac{7}{3})=-1$ ----> the lines are perpendicular

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3 years ago

Factor 8x^2-27 show all steps

Olenka [21]

Solutions

Factor 8x²−27

=8x²−27

You can not factor 8x²−27

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pishuonlain [190]

The graph of y=|x| would look like graph A

The reflected graph (mirrored image) would be graph D

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