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Korolek [52]
3 years ago
11

The difference of a number 8 and 12 is three. Find the number.​

Mathematics
1 answer:
sattari [20]3 years ago
3 0

Answer:

Step-by-step explanation:

Let the number be y,

y-8-12 = 3

y-20. = 3

y. =. 20+3

y =. 23

PLEASE MARK BRAINLIEST.

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Debbie buys a tree for the holidays. She would like to determine the amount of space it will take up in her living room. The tre
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Answer:

Volume = 200.96 cubic feet

Step-by-step explanation:

Volume of a cone is given by the formula   V=\frac{1}{3}\pi r^2 h

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Given r = 4 and height is 3 times that. So height is 4*3 = 12

Plugging these into the formula we get:

Volume of Cone =  \frac{1}{3}\pi (4)^2 (12)\\=\frac{1}{3}(3.14)(16)(12)\\=200.96

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3 0
3 years ago
Complete the sentence. 13 is 65% of _____
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8 0
3 years ago
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What method would you choose to solve the equation 2x2 – 7 = 9? Explain why you chose this method.
Kisachek [45]
<span>This is a quadratic equation . We order to equate to zero

</span>2x²<span> – 7 = 9  
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2≠0  ∨     x² - 8 = 0
               x² = √8
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Answer : x = √8 ∨ x = -√8
5 0
3 years ago
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One number is 1/4 of another number. The sum of the two numbers is 5. Find the two numbers. Use a comma to separate your answer
masha68 [24]

Answer: 1, 4

Step-by-step explanation:

  • Number #1 = x
  • Number #2 = \frac{1}{4} x

\frac{1}{4} x+x=5\\\\\frac{1}{4} x+\frac{4}{4} x=5\\\\\frac{5}{4} x=5\\\\5x=4*5\\5x=20\\x=4

  • Number #1 = x = 4
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6 0
3 years ago
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