Answer: A. 40
Step-by-step explanation:
Answer:
9. Let's simplify step-by-step.
Ans. 5x + 24 + 147
Combine Like Terms:
= 5x + 24 + 147
= ( 5x ) + ( 24 + 147 )
= 5x + 171
10. Let's simplify step-by-step.
Ans. 3x + ( 7x + 10 )
Combine Like Terms:
( 3x + 7x ) + 10
10x +10
11. Let's simplify step-by-step.
Ans. 5x + ( 2 + 3 )
5x + 5
12. 4 * 10
Ans. 40
13. 3 ( 12x )
Ans. 36x
14. 14r + 9y + 6x
Ans. 14r + 6x + 9y
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Both of the first two choices represent the amount Connor paid.
15% = 0.15, so when you subtract 15% of d from d, you get the 2nd expression. When you simplify that, you get the 1st expression.
The correct choices are ...
• 0.85d
• d - 0.15d
Let the number of girls be g and the number of boys be b.
b = 3g
Class average = class score/class size = 17
17 = (class score) / 3g + g
68g = class score
Class score = girls score + boys score
Girls average = girls score/g
girls score = 18g
68g = 18g + boys score
boys score = 50g
Boys average = 50g/3g
= 16.7
The answer is 8.25 units
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