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Alekssandra [29.7K]
4 years ago
9

—7y - 17 = -38 show your work​

Mathematics
2 answers:
aleksandrvk [35]4 years ago
7 0

Answer:

y = 3

Step-by-step explanation:

Given

- 7y - 17 = - 38 ( add 17 to both sides )

- 7y = - 21 ( divide both sides by - 7 )

y = 3

vova2212 [387]4 years ago
4 0

Answer:

y=3

Step-by-step explanation:

-7y - 17 = -38

Add 17 both sides

-7y - 17 + 17= -38+17

7y= -21

Divide both sides by -7

\dfrac{-7y}{-7}=\dfrac{-21}{-7}

y=3

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In-s [12.5K]

The width of a book is 1.5 inches.

The total width of 79 books is 1.5×79

= 118.5 inches.

The cost of a 34.5 inch wide shelf is $12.95

Therefore, the cost of a 118.5 inch wide shelf will be:

(Let the cost of the 118.5 inch wide shelf be x)

\frac{34.5}{12.95}  =  \frac{118.5}{x}  \\ cross \: multipy \\ 34.5x = 118.5 \times 12.95 \\ x =  \frac{118.5 \times 12.95}{34.5}  \\ x = 44.48

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5 0
2 years ago
(3, r) and (7, 2) m = 1
hammer [34]

Answer:

r = -2

Step-by-step explanation:

2+2 = 4

7-3 = 4

4/4 = 1

m = 1

5 0
3 years ago
Please help ASAP!ill give brainliest !
Vinil7 [7]
The vertex is at (0, 3) so y=a(x-0)²+3, which is y=ax²+3
next, use a given point to find a: 10=a(3)²+3, so 9a=7, a=7/9
the equation is then y=\frac{7}{9}x^2+3

as for the first question, the shape is an ellipse, the domain is -5≤x≤5, the range is -3≤y≤3 

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4 years ago
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kotegsom [21]
The answer to the proportion is t=52.5
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3 years ago
If x-2y=10 and x≠0, what is the value of 2x/y+5
VladimirAG [237]

Answer: 4

Step-by-step explanation:

x - 2y =10

x = 10 + 2y

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\frac{2(10+2y)}{y+5}

\frac{20+4y}{y+5}

\frac{4(5+y)}{y+5} ... cancel like terms (y + 5)

= 4

5 0
2 years ago
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