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jeka57 [31]
3 years ago
8

The cost of 8 muffins and 2 quarts of milk is $18. The cost of 3 muffins and and one quart of milk is $7.50. How much does 1 muf

fin and 1 quart of milk cost

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0

Hi, hope this helps :)

Feel free to ask me if you do not understand. I used the elimination method.

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Challenger Elementary School has 8 0 0 800800 students. Every Wednesday, 1 2 % 12%12, percent of the students stay after school
Juliette [100K]
You need to calculate 12% of 800.

To find a percent of a number, multiply the percent by the number.
Change the percent into a decimal by dividing the percent by 100 (move the decimal point of the percent two places to the left.)

12% of 800 =

= 12% * 800

= 0.12 * 800

= 96

Answer: 96 students
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4 years ago
Determine the equation of the line, written in slope-intercept form, that passes through the points (1,1) and (5,−1).
bazaltina [42]

Answer:

y=-1/2x+3/2

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-1-1)/(5-1)

m=-2/4

m=-1/2

y-y1=m(x-x1)

y-1=-1/2(x-1)

y=-1/2x+1/2+1

y=-1/2x+1/2+2/2

y=-1/2x+3/2

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4 years ago
Which of the following are NOT sufficient to prove that a quadrilateral is a parallelogram?
Ksenya-84 [330]
The answers are
<span>I. Two pairs of opposite angles congruent. 
II. A pair of adjacent angles are supplementary. </span> 
<span>VIII. The diagonals bisect each other. </span>
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3 years ago
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How many dimes are equal to $9? (10 dimes = $1.00)
Paha777 [63]
90 dimes = $9 because 10 dimes = $1

7 0
3 years ago
Write three equations whose solution is x=3.5
My name is Ann [436]

Answer:

  • 1. 2x + 23 = 30
  • 2. 3x + 19.5 = 30
  • 3. (10x - 20)/ 5 = 3

Explanation:

Work backward:

1. 2x + 23 = 30

Start:

  • x = 3.5

Multiply the equation by 2:

  • 2x = 2 (3.5)
  • 2x = 7

Subtract 30 from both sides

  • 2x - 30 = 7 - 30
  • 2x - 30 = -23

Add 23 and 30 to both sides:

  • 2x + 23 = 30

2. 3x + 19.5 = 30

Start:

  • x = 3.5

Add 6.5 to both sides:

  • x + 6.5 = 10

Multiply by 3:

  • 3(x + 6.5) = 30

Distributive property:

  • 3x + 19.5 = 30

3. (10x - 20)/ 5 = 3

Start:

  • x=3.5

Multiply by 10:

  • 10x = 35

Subtract 20:

  • 10x - 20 = 15

Divide by 5:

  • (10x - 20)/ 5 = 15/5

  • (10x - 20) / 5 = 3
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4 years ago
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