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aleksandr82 [10.1K]
3 years ago
14

4) How much pizza sauce is needed to cover a 16" pizza? (Note: 16" is the diameter of the pizza.) A) 50.24 in2 B) 200.96 in2 C)

803.84 in2 D) 3215.36 in2
Mathematics
1 answer:
never [62]3 years ago
4 0
In order to get how much is being covered, we need to know the formula of the area of a circle.
Area = pi * r^2
Area = pi * (16/2)^2
Area = pi * 8^2
Area = pi * 64
Area = 200.96 in^2

So the correct answer is letter B. 200.96 in^2
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If y is directly proportional to x square and y equal 1/8 when x = 1/2 what is the positive value of x when y it was 9/2?
mojhsa [17]

Answer:

d

Step-by-step explanation:

Given y is directly proportional to x² then the equation relating them is

y = kx² ← k is the constant of proportion

To find k use the condition y = \frac{1}{8} when x = \frac{1}{2}, then

\frac{1}{8} = k(\frac{1}{2} )² = \frac{1}{4} k ( multiply both sides by 8 )

1 = 2k ( divide both sides by 2 )

k = \frac{1}{2}

y = \frac{1}{2} x² ← equation of proportion

When y = \frac{9}{2} , then

\frac{9}{2} = \frac{1}{2} x² ( multiply both sides by 2 )

9 = x² ( take the square root of both sides )

x = ± \sqrt{9} = ± 3

with positive value x = 3 → d

8 0
3 years ago
Eliza’s backpack weighs 18 and StartFraction 7 over 9 EndFraction pounds with her math book in it. Without her math book, her ba
kramer

Answer:

about 3.9 lbs

Step-by-step explanation:

18 7/9 lbs - 14 7/8 lbs

convert mixed numbers to improper fractions

169/9 - 119/8

convert to common denominator

1352/72 - 1071/72

subtract numerators

281/72

about 3.9 lbs

4 0
3 years ago
Read 2 more answers
Given circle U with diameter ST and radius UQ. QR is tangent to U at Q. If
vfiekz [6]

Answer:

QT = 18

Step-by-step explanation:

4 0
2 years ago
How can u show that two objects are proportional using a graph
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The graph has to be a straight line that pass through the origin (0,0)
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3 years ago
What is 175cm in feet and inches? I'm 175cm and I calculated that 175cm is 5 foot 10 inches... but i don't think im that tall...
timurjin [86]
<span>5' 8 and 5/6" or 5' 8.9"</span>
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3 years ago
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