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Sphinxa [80]
3 years ago
14

A 21-inch rope is to be cut into two pleces so that one piece is 8 inches longer than twice the other. How long is each piece, i

f a=2, b= 8, and I=21
smaller plece
in
larger plece
Mathematics
1 answer:
Serhud [2]3 years ago
8 0

Answer:

4 1/3 inches   Smaller piece

16 2/3 inches   Larger piece

Step-by-step explanation:

x + (2x + 8) = 21

3x + 8 = 21

3x = 13

x = 13/3

x = 4 1/3 inches   Smaller piece

2x + 8 = 8 2/3 + 8

2x + 8 = 16 2/3 inches   Larger piece

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A spherical globe has a diameter of 10 inches. What is the approximate volume of the globe?
adelina 88 [10]

Answer:

523.33 in^3

Step-by-step explanation:

A sphere is a 3-dimensional version of a circle. An example of a sphere is a ball

Volume of a sphere = \frac{4}{3}πr^{3}

Where

π = 3.14

r = radius

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

diameter = 2r

Radius = 10 in / 2 = 5 inches

\frac{4}{3} × 3.14 ×5^{3} = 523.33 in^{3}

6 0
3 years ago
How can you use 4s fact to find 7x8? Give the product in your explanation.
Mkey [24]
So 4's facts

we know that 4 times 2=8 and the associative property of multiplication says
a(bc)=(ab)c

so 7(8) (means 7 times 8) means 7((4)(2)) and associative say we can group them and say (7)(4)(2) so (4)((7)(2)) or 4(14) and 4 times 14=56

7 times 8=56
7 0
3 years ago
If you could help it'd mean the world to me
juin [17]

Answer: 22

Step-by-step explanation: because if you read it carefully and do math you are sure to get it right!! :)

3 0
2 years ago
I just need to know which expressions are equal to the given one at the top. I will award brainliest for the best and correct an
Fudgin [204]
The last choice is one.

Also the seventh.
7 0
3 years ago
Read 2 more answers
A-(5,-9)<br> B-(-9,-5)<br> C-(-9,5)<br> D-(-5,9)<br><br> ASAP HELP!!! WILL MARK BRAINLIST!!!
slava [35]
It’s supposed to be (5,9) both numbers positive
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