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Inessa [10]
4 years ago
10

The difference between 9 and twice a number x

Mathematics
1 answer:
qwelly [4]4 years ago
7 0

9-2x

-Difference means subtract (9- ... )

-Twice means multiply (X)

-Twice a number x is (2x)

-You are multiplying 2 and x (2x)

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Electric utility poles in the form of right cylinders are made out of wood that costs $25.46 per cubic foot. Calculate the cost
kotegsom [21]

Answer:

$ 1349.746624

Step-by-step explanation:

The volume of a cylinder

The formula for calculating the volume of a cylinder is expressed as:

V=πr²h

where:

r is the radius

h is the height

Given the following parameters

r = d/2 = 1.5/2 = 0.75ft

h = 30ft

Get the volume of the cylinder

V=π(0.75)²(30)

V= 53.0144...ft³

If the wod costs $25.46 per cubic foot, hence the cost of the wood will be 53.0144*25.46 = $ 1349.746624

4 0
2 years ago
The low temperatures for one week in Scottsburg, IN are given below. What was the mean daily low temperature for the week? −7.9°
gogolik [260]
Your answer: -0.8

first you would add all of your temperatures together which would give you -5.6

then you would divide -5.6 by 7 because u have 7 numbers

which would give you your answer!

hope this helps, good luck!
7 0
3 years ago
Read 2 more answers
Item 5<br> Write 77.5% as a fraction or mixed number in simplest form.
jeyben [28]

<span>77.5% can also be written as 77.5/100, but if you're the mathematical notation police, people don't like decimals on a fraction, sooo, an equivalent form is: </span>

<span>
 = (77.5)/(100) * (2/2)
= 155/200
= 31/40
= 0 31/40 </span>

5 0
3 years ago
What value of x makes x/20 and 3/4 proportionate
hodyreva [135]
The Answer is x=15. Good luck!
8 0
3 years ago
Read 2 more answers
Pls show me proof, thank you
Karo-lina-s [1.5K]

The y has to be negative but the x positive. So that leaves only (3,-4)

4 0
3 years ago
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