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Nina [5.8K]
3 years ago
7

I really need help pls

Mathematics
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

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

we know that

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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

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therefore

<u>the answer is</u>

the number of multiple choice question are 13

the number of free response question are 2

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3 years ago
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Answer:

This equation has 2 solutions.

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

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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

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hope this helps...

3 0
3 years ago
Expand and simplify (x + 5)(x + 4)<br>​
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Answer:

(x+5)⋅(x+4)= x2+9x+20

Step-by-step explanation:

(x+5)(x+4)

=x

2

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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:

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