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madam [21]
4 years ago
10

Practice Problems

Mathematics
1 answer:
OverLord2011 [107]4 years ago
4 0

Answer:

1. slope is 7 and y-intercept is 9

2.slope is -5 and y-intercept is -2

3. slope is 3 and y-intercept is 1

Step-by-step explanation:

The standard equation of a line in slope form is;

y=mx + b where m is the slope and b is the y intercept.

In question 1.

y=7x + 9

slope is 7 and y-intercept is 9

In question 2

y= -5x - 2

slope is -5 and y-intercept is -2

In question 3

y= 3x + 1

slope is 3 and y-intercept is 1

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Answer:

X= -6 7/8

Step-by-step explanation:

(9 1/4) + (-6 7/8)= 2 3/8

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3 years ago
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There are 24 female performers in a dance recital. The ratio of men to women is 3:8. How many men are in the dance recital? Ther
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Answer:

9 men

Step-by-step explanation:

men: women : total

3          8            3+8

3          8               11

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24/8 = 3

Multiply each term by 3

men: women : total

3*3      8*3         11*3

9           24         33

There are 9 men at the recital

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Answer:

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Step-by-step explanation:

3 0
3 years ago
Sharla is 8 year older than her sister, patricia . The sum of their ages is 102.Find their ages.​
Alisiya [41]

Answer:

Patricia is 47 years old

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Step-by-step explanation:

Rewrite the first sentence as an equation: (S= Sharla) (P= Patricia)

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Rewrite the second sentence as an equation:

S+P=102

1) Substitute P+8 as Sharla in the second equation:

P+8+P=102

2) Combine alike terms:

2P+8=102

3) Subtract 8 from both sides:

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4) Divide both sides by 2:

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5) Substitute 47 as P in the <u>First</u> equation:

S=47+8

6) Solve:

S=55

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