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BartSMP [9]
3 years ago
5

Ons: Practice

Mathematics
1 answer:
Sedaia [141]3 years ago
7 0

Answer:

x = 18

Step-by-step explanation:

Given

\frac{x}{6} - 7 = -4

Required

Solve for x

\frac{x}{6} - 7 = -4

Add 7 to both sides

\frac{x}{6} - 7+7 = -4+7

\frac{x}{6}  = -4+7

\frac{x}{6}  = 3

Multiply through by 6

6 * \frac{x}{6}  = 3 * 6

x = 3 * 6

x = 18

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Maurice buys a dozen of donuts on sale for $7.99 before tax.
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Answer:

$8.30

Step-by-step explanation:

7.99 + 4% = 8.30

5 0
3 years ago
The input is 8 and the output is 26 what's the rule?
LuckyWell [14K]

Answer:

It could either be x * 3.25 or x + 18

Step-by-step explanation:

8 * 3.25 = 26

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3 0
3 years ago
All together, 3 people have 120 coins. mark has 3 times as many as joel, and joel has 1/2 as many as sandra. how many coins does
oksano4ka [1.4K]
Joel = j, Mark = m, Sandra = s
j + m + s = 120
m = 3j
j = 1/2 s --> s = 2j
plug in (substitute) each letter to make it in terms of only j: j + m + s = 120
j + 3j + 2j = 120
6j = 120
6j/6 = 120/6
j = 20
now plug in for the j & s equation:
s = 2j = 2(20) = 40
Therefore Sandra has 40 coins!
7 0
3 years ago
To the girl who got it right is the one in the comments :D
Mama L [17]
Dang that’s nice free points thank you
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I need to distribute 5(y+3)=35
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