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ZanzabumX [31]
3 years ago
14

QUICK PLEASE!!!

Mathematics
2 answers:
Delicious77 [7]3 years ago
8 0

Answer:

im just going to copy and paste the correct ones and their answers:

<u>Problem: The sum of twice a number and −6 is 9 more than the opposite of the number. Find the number.</u>

<u>Equation: 2n − 6 = 9 − n</u>

<em>n = 5</em>

<u>Problem: Anna drove 450 km in 6 hours. Find her rate of travel.</u>

<u>Equation: 450r = 6</u>

<em>r = 75</em>

<u>Problem: Three times a number increased by 44 is the same as the opposite of the number. Find the number.</u>

<u>Equation: 3n + 44 = −n</u>

<em>n = -11</em>

<em />

<u />

omeli [17]3 years ago
4 0

Answer:

a and c

Step-by-step explanation:

a.2n-6=9-n

2n+n=9+6

3n=15

n=\frac{15}{3}=5

b.Rate=\frac{distance}{time}

Distance=450 km

Time=6 hours

Rate=\frac{450}{6}=75 Km/h

But from given equation

450r=6

r=\frac{6}{450}

Hence, it is wrong.

c.3n+44=-n

3n+n=-44

4n=-44

n=\frac{-44}{4}=-11

d.Let number of quarter=x

Number of dimes=5 x

According to question

x+5x=$5.25

But given equation

x+10x=$5.25

This is wrong.

Hence, option a and c are true.

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Hope this helped!!!

~BBGLUVER


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