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musickatia [10]
3 years ago
15

Solve the system of linear equations. What is the value of y?

Mathematics
1 answer:
MrMuchimi3 years ago
7 0

Answer:

y = 5

y = 2.2

Step-by-step explanation:

For the first one:

9x = 9 x1 = 9

9 - 6 = 3

3y = 15

15 ÷ 3 = 5

y = 5

For the second one:

6x = 6 x 1 = 6

6 + 21 = 27

27y = 60

60 ÷ 27 ~ 2.2

y = 2.2

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Is there a multiple choice? If not, 5 is an answer.

5 + (-3.7) = 1.3

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4 years ago
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vlabodo [156]

Answer:

9/35

Step-by-step explanation:

There are a total of 15 bulbs to choose from randomly. First a new bulb is chosen. Chance is 9/15 because 9 out of 15 are new.

Then there are only 14 bulbs left. Then a used bulb is chosen. Chance is 6/14 since 6 out of remaining 14 are used.

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3 years ago
Help i dunno the answer to it :
Novay_Z [31]

Answer:

5 miles per hour

Step-by-step explanation:

Let the speed of Kelly is v_1 miles per hour and speed of Raul is v₂ miles per hour.

Since, speed = \frac{\text{Distance}}{\text{Time}}

Kelly took 135 minutes to cover 90 miles from New York to Philadelphia.

∵ 1 minute = \frac{1}{60} hours

∴ 135 minutes = \frac{135}{60} = \frac{9}{4} hours

v₁ = \frac{90}{\frac{9}{4}}

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Raul took 153 minutes to cover the same distance as Kelly,

∵ 1 minute = \frac{1}{60} hours

∴ 153 minutes = \frac{153}{60} = \frac{51}{20} hours

v₂ = \frac{90}{\frac{51}{20}}

    =90\times \frac{20}{51}                        

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v₁ - v₂ = 40 - 35.3

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Answer:

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