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nadezda [96]
4 years ago
9

How do u turn 40% and 30% in to a number

Mathematics
1 answer:
Ganezh [65]4 years ago
6 0
Add the numbers up, then take the percentage sign away and there you have it! A number all fresh, new and crisp! 
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5x + 2(x + 7) = 14x – 7
iren2701 [21]

Answer: X=3

Step-by-step explanation:

5x+2x+14=14x-7

7x+14=14x-7

7x-14x=-7-14

-7x=-21

x=3

5 0
3 years ago
The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit.
konstantin123 [22]
Thank you for posting your question here. Please see below answers for the problem above:

a. to find the circumference of the tire you need to multiply 3.14 by 2.5:
 = 3.14 x 2.5
 = 7.85 to round of it will be 8

b. to get the number of times the tire have to rotate to travel 1 mile:

1 mile = 5,280 ft
1 rotation is 7.85 
5,280/7.85 = 672.611465
4 0
3 years ago
1. Y= 3x + 5<br> +0<br> 2<br> Increasing<br> Decreasing<br> Positive<br> Negative
Natalka [10]

Answer:

The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.

Step-by-step explanation:

7 0
3 years ago
Estimate the:<br>length of a pen<br>length of a swimming pool<br>length of a marathon race​
Paha777 [63]
<h2><em><u>Answers</u></em><em><u> </u></em><em><u>for</u></em><em><u> </u></em><em><u>question</u></em><em><u>:</u></em></h2>

<h3><em><u>length</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>pen</u></em><em><u>:</u></em></h3>

5.2 inches 13.12 cm

<h3><em><u>length</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>swimming</u></em><em><u> </u></em><em><u>pool</u></em><em><u>:</u></em></h3>

50m

<h3><em><u>length</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>marathon</u></em><em><u> </u></em><em><u>race</u></em><em><u>:</u></em></h3>

42.195 kilometers

<h2>hope this answers your question! </h2>
8 0
3 years ago
Solve for y when x=28<br> x+3y=28
I am Lyosha [343]
Solving for y means to get that variable on one side of the equation and everything else needs to be on the opposite side of y.

We also know x is equal to 28. So, we can replace x with 28.
Now the equation will look something like 28 + 3y = 28

Now let us solve it.

28 + 3y = 28

First, subtract 28 from each side of the equation.

(28 + 3y) - 28 = 28 - 28 =
3y = 0

Now divide each side by 3.

3y / 3 = 0 / 3

y = 0/3

If a fraction has a numerator of 0, that means it's 0.

So, y is equal to 0.
3 0
4 years ago
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