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Dmitrij [34]
3 years ago
10

Solve 28 + 7y =91Y=.....​

Mathematics
2 answers:
Anna35 [415]3 years ago
8 0

Answer:

y = 9

Step-by-step explanation:

28 + 7y = 91 \\ 7y = 91 - 28 \\ 7y = 63 \\  \frac{7y}{7}  =  \frac{63}{7}  \\ y = 9

8090 [49]3 years ago
3 0

Answer:

Y=9

Step-by-step explanation:

28 + 7y =91

first subtract 28 from both sides

28-28+7y=91-28

7y= 63

then divide both sides by 7

7y/7=63/7

y=9

ANSWER CHECK

to see if the answer is correct substitute the answer you got for the variable

y=9

28 + 7(9)

multiply 7 and 9

7(9)=63

63+28= 91

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Subtract 5 from both sides.

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Subtract 8n from both sides.

4 = -9n

Divide both sides by -9 to solve for n.

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8 0
3 years ago
A rectangular exercise mat has a perimeter of 36 feet . The length mat is twice the width. Write and solve an equation to determ
Goshia [24]
ANSWER

72 square feet

EXPLANATION

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P= 2l+2w

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Divide through by 2.

18 = l + w...(1)

It was given also that, the length of the mat is twice its width.

This implies that,

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18 = 3w

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This means that the length is 12 ft.

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4 0
3 years ago
Can someone Help with this question
inn [45]

Answer:

B 12

Step-by-step explanation:

  • manuel ate 1/3X
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x/3+x/4+5=x

7x+60/12=x

  • cross multiply

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  • collect like terms

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x=60/5

x= 12

5 0
3 years ago
Plz help me ........
Tju [1.3M]

Answer a is it

Step-by-step explanation

7 0
2 years ago
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Natasha_Volkova [10]
The probability that two events occur is equal to the product of the individual events happening or occurring. For this item, we let x be the probability that is unknown such that the relationship between them may be expressed as,
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The value of x from the equation is 11/19. 
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3 years ago
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