MATHEMATICS MIDDLE SCHOOL

Which number rounds to 45,000

Answers

Answer 1
Answer: The number 44,700  rounds to 45,000.

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4. What is the formula to find the volume of a sphere?(2 points)
V
= Tr²h
Ovrh
v 2013​

Answers

Answer:

The formula of the volume of the sphere is V = (4/3)×π×r³ where r is the radius of the sphere.

Amie published her first book. She was given $20,000 and an additional $0.15 for each copy that sold. Her earnings,d, in dollars,from the publication of the book are given d=20,009 + 0.15n where n is the number of copies sold. During the first year, Amie earned $22,100 from the publication and the sale of her book. How many copies of her book were sold?

Answers

Answer: 139 copies of her book were sold.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Earnings (d)  

  • d= 20,009+0.15n

Where "n" is the number of copies sold.

If she earned $22,100, we have to replace the value of d by the number given:

22,100 = 20,009 +0.15 n

Solving for n

22,100-20,009 = 0.15n

2,091=0.15n

2,091/15=n

139.4=n

n≅139 books (rounded)

Feel free to ask for more if needed or if you did not understand something.  
d=20,009 + 0.15n
$22,100 = 20,009 + 0.15n
$2091 = 0.15n
n = 2091/.15 = 13940

Reason Lena is making a puzzle, she cuts a shape into5. two pieces and rearranges them to make the shape below.Which shape did she start with?6. Draw a picture to show how you can rearrangerthe four triangles cut from a rectangle to makea concave hexagon.

Answers

The answer to 5 is D

If a+b=12 and a−b = 8, what is the value of a^2+b^2?

Answers

Step-by-step explanation:

A2 + b2 = (a +b) (a-b)

Putting values

a2 +. b2 = (12)(8)

a2 + b2 = 96
a = 10, b = 2

a^2+b^2 = 100+4 = 104


Work:
Split 12 into two even halves: 6 and 6
Increase one side by 4 and decrease the other side by 4, to make them 8 apart.
Now we have 10 and 2.

Simplify each term by combining like terms:
5h + h + - 4h + 1 - 2h

Answers

5h+h=6h
6h-4h=2h
2h+1=2h+1
2h+1-2h= 1

EASY QUESTION. What is biomass?
Organic matter that can be used as a fuel source
Natural resource that takes more than a lifetime to replenish
Alternative energy forms like solar energy and wind power that can be recycled
Renewable energy captured through using the heat of the Earth

Answers

Biomass is plant or animal material used for energy production (electricity or heat), or in various industrial processes as raw substance for a range of products

Answer:

A) Organic matter that can be used as a fuel source

:)
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