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Svetach [21]
2 years ago
8

What will be 50% of 42

Mathematics
2 answers:
zimovet [89]2 years ago
7 0
Twenty one is the answer
Airida [17]2 years ago
7 0

To find 50% of 42, first write 50% as a decimal by moving the decimal point 2 places to the left to get .50.

Next, the word "of" means multiply, so we have to multiply.

(.50) × (40) = 21

Therefore, 50% of 42 is 21.

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A water trough is 9 m long and has a cross-section in the shape of an isosceles trapezoid that is 20 cm wide at the bottom, 70 c
ella [17]

Answer:

dv = surface area * dh

so

dv/dt = surface area * dh/dt

width at surface = 40 + (80-40)(30/40)

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Step-by-step explanation:

7 0
2 years ago
the bottom of a vase is a square.each side measury y+11 units.the square has a perimeter of 55 units what is the value of y?
Norma-Jean [14]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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The height of a triangle is 7 cm longer than its base.
katrin [286]
A) Height -7 = base
B) .5 * height * base = 60
Substituting A into B
B) .5 * height * (height -7) = 60
B)  .5*height^2  -3.5*height = 60
B)  .5*height^2 -3.5*height -60 = 0
Using the quadratic formula:
Height = 15
Subtracting 7 gives us the base length
Base = 8
**************************************************************
Double-Check
.5 * 15 * 8 = 60


6 0
3 years ago
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