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3 years ago

7

I really need help pls

1 answer:

LenKa [72]3 years ago

6 0

Answer:

b

Step-by-step explanation:

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Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.

SpyIntel [72]

Let

x------> the number of multiple choice question

y------> the number of free response question

we know that

$3x+8y=55$ -----> equation A

$x+y=15$

$x=15-y$ -----> equation B

Substitute equation B in equation A

$3[15-y]+8y=55$

$45-3y+8y=55$

$5y=55-45$

$5y=10$

$y=2$

Find the value of x

$x=15-y$

$x=15-2=13$

therefore

<u>the answer is</u>

the number of multiple choice question are $13$

the number of free response question are $2$

5 0

3 years ago

Read 2 more answers

How many solutions does the equation below have? 1/(-6-8x) = -3- 1x

uranmaximum [27]

Answer:

This equation has 2 solutions.

1. $x=\frac{-15+\sqrt{89}}{8}$

2. $x=-\frac{15+\sqrt{89}}{8}$

5 0

1 year ago

Tracey wants to ride her bicycle at least 150 miles this week. She has already

dimaraw [331]

150 - 42 = 108

108 ÷ 6 = 18

therefore m = 18

hope this helps...

3 0

3 years ago

Expand and simplify (x + 5)(x + 4)<br>

Nina [5.8K]

Answer:

(x+5)⋅(x+4)= x2+9x+20

Step-by-step explanation:

(x+5)(x+4)

=x

2

+4x+5x+20=

=x

2

+9x+20

7 0

3 years ago

Read 2 more answers

Leslie started last week with $1200 in her checking account. During the week, she wrote the checks below. Trans typ./ Check no.

Greeley [361]

Answer:d

Step-by-step explanation:

6 0

3 years ago