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Nikitich [7]
3 years ago
11

Please help me out :)

Mathematics
1 answer:
Alex17521 [72]3 years ago
3 0

79-y=2y+22

Add y on both sides

79=3y+22

Subtract 22 from both sides

57=3y

Divide by 3 on both sides

19=y

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The cost of 10 cupcakes is $40. How much is one cupcake?
Nimfa-mama [501]

40 \div 10 = 4
the answer is 4$
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Evaluate the expression: x +y + z (if x =33, y = -28, and z =40)
Mrac [35]
Answer is 45 (33-28+40=45)
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Estimate quotient using multiple 53÷3
kolezko [41]
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Explain how to convert 6 feet into meters
ivolga24 [154]

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3 0
3 years ago
Read 2 more answers
If the surface area of the box in the diagram is 204.25 square feet, what is the value of ‘x’?
Alexandra [31]

Note: Consider x be the breadth of the box.

Given:

The surface area of the box is 204.25 square feet.

Length of the box = 10 ft

Breadth of the box = x ft

Height of the box = 6.5 ft

To find:

The value of x.

Solution:

The surface area of a cuboid is:

SA=2(lb+bh+hl)

Where, l is length, b is breadth and h is height of the cuboid.

Putting SA=204.25,  l=10,\ b=x,\ h=6.5 in the above formula, we get

204.25=2(10\times x+x\times 6.5+6.5\times 10)

204.25=2(10x+6.5x+65)

204.25=2(16.5x+65)

Using distributive property, we get

204.25=2(16.5x)+2(65)

204.25=33x+130

204.25-130=33x

74.25=33x

Divide both sides by 33.

\dfrac{74.25}{33}=x

2.25=x

Therefore, the correct option is B.

7 0
3 years ago
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