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STALIN [3.7K]
3 years ago
14

Find the unit rate, and then use it to solve the problem.

Mathematics
1 answer:
Sergio [31]3 years ago
3 0
If the company makes 50 deliveries in 5 days, he makes 50/5=10 deliveries per day.  Therefore, 400 deliveries will take 400/10=40 days.  D is the correct answer.
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18. When y = x?, which of the following expressions is<br> equivalent to -y ?
vitfil [10]

Answer:

-y=-x

The problem:

y=x then -y=?

Step-by-step explanation:

If y=x, then -y=-x.

Just like if u=9, then -u=-9.

Or, if -m=8, then m=-8.

5 0
3 years ago
Two grapefruits and three oranges cost $1.95. Three grapefruits and two oranges cost $2.05.
geniusboy [140]

Answer:

  • one orange costs $0.35  and  one grapefruit costs $0.45

Step-by-step explanation:

<em>let grapefruits be g , let oranges be o</em>

so first equation:

→2g + 3o  = $1.95

→g = ($1.95 - 3o)/2

so second equation:

→ 3g + 2o = $2.05

→ g = ($2.05 - 2o)/3

Solving simultaneously:

→ ($2.05 - 2o)/3 = ($1.95 - 3o)/2

→ 2($2.05 - 2o) = 3($1.95 - 3o)

→ 4.1 - 4o = 5.85 - 9o

→ - 4o + 9o = 5.85 - 4.1

→ 5o = 1.75

→ o = $0.35

Therefore one orange costs $0.35

Then one grapefruit costs g → ($1.95 - 3o)/2

                                               → g = ($1.95 - 3(0.35))/2

                                               → g = 0.45

Therefore one grapefruit costs $0.45

4 0
2 years ago
At a garage sale, Susan found a vase for $5. She was able to negotiate the price of the vase to $4.
qaws [65]

Answer:

20% off

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
How to find the value of x 103-4x=71
jasenka [17]

Answer:

x= 8

Step-by-step explanation:

103 - 4x = 71

You have to isolate -4x by using the subtraction property of equality on 103

103(-103) -4x = 71(-103)

-4x = -32

Use Multiplication Property of Equality for the negative

4x = 32

Divide 4 from both sides

x= 8

3 0
3 years ago
ANSWER THESE ILL GIVE U BRAINLIEST
Mazyrski [523]
8 - rotation
9- rotation
10- y- axis
4 0
2 years ago
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