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RSB [31]
3 years ago
10

Please help!!!! 10 points

Mathematics
2 answers:
xenn [34]3 years ago
6 0

Answer:

E) 18a-8b-1

Step-by-step explanation:

10a-7b+11+8a-b-12

Group the similar terms together:

10a+8a-7b-b+11-12

Add/subtract the "a" terms:

18a-7b-b+11-12

Add/subtract the "b" terms:

18a-8b+11-12

Add/subtract the numbers:

18a-8b-1

Akimi4 [234]3 years ago
6 0

Answer: E) 18a - 8b - 1

Step-by-step explanation:  1) Combine like terms: (10a+8a)+(-7b-1b)+(11-12)

2) 18a - 8b - 1

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The sum of a student's three score is 246. if the first is 14 points more than the second, and the sum of the first two is 6 mor
mr_godi [17]
Let the second score = x
⇒ second score = x

<span>the first is 14 points more than the second
</span>⇒ first score = x + 14

<span>the sum of the first two is 6 more than twice the third
</span>⇒ third score = 1/2 (x + x + 14 - 6) = x + 4

<span>The sum of a student's three score is 246
</span>⇒ x + (x + 14) + (x + 4) = 246
<span>
Solve x:
</span>x + x + 14 + x + 4 = 246
3x + 18 = 246
3x = 228
x = 76

second score = x = 76
first score = x + 14 = 76 + 14 = 90

Answer: 90
7 0
3 years ago
The local ice cream parlor sells an average of 11 milkshakes a day for $3.99
Greeley [361]

In a week, the parlor would make about $300 from milkshakes

The total amount the ice cream parlor makes in a week is dependent is the product of the number of days in a week , the number of milkshakes sold in a day and the price of a milkshake.

Total amount = number of milkshakes sold in a week x price of a milkshake

There are 7 days in a week, in a week the parlor would sell : 11 x 7 = 77 milkshakes

price of a milkshake = $3.99

77 x $3.99 = $307.23

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Step-by-step explanation:

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