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AleksAgata [21]
4 years ago
11

Please help, if you can, thanks :)number 15

Mathematics
2 answers:
solmaris [256]4 years ago
8 0
The answer to number 15 is b
Alexus [3.1K]4 years ago
5 0
17/10 uses 7/8
136/80 uses 70/80
Splits between 7 shakers
70/80 in 7 shakers is 1/8
B is your answer
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The number of radians in a 540540540-degree angle can be written as a\piaπa, pi, where aaa is a constant, what is the value of a
Art [367]

Using proportions, it is found that the value of a is of 3.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, a 180º angle has a measure of \pi radians. What is the measure of a 540º angle? The <em>rule of three</em> is given by:

180º - \pi rad.

540º - x \pi rad.

Applying cross multiplication:

180x = 540.

x = 540/180 = 3.

The value of a is of 3.

More can be learned about proportions at brainly.com/question/24372153

5 0
2 years ago
Read 2 more answers
What is the arc length of a circle (in meters) with a radius of 2 meters that has an arc angle of 90°?
DIA [1.3K]

Answer:

The arc length of a circle is 3.14 m or 1π m

Step-by-step explanation:

First of all we have to calculate the circumference of the circle and then extract the portion that corresponds to 90°

To solve this exercise we need to use the circumference formula of a circle:

c = circumference

r = radius = 2m

π = 3.14

c = 2π * r

we replace the known values

c = 2 * 3.14 * 2m

c = 12.56m

As we know a circle is represented with 360 ° and they tell us that the angle is 90 °, so we have to know the relationship with respect to the total

90° / 360° = 1/4

Now we multiply this number by the circumference and we will obtain the length of the arc

12.56m * 1/4 = 3.14

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8 0
3 years ago
Here is an easy one
kvv77 [185]
Remember that the angles of a triangle is 180 so:

(7x+8) + (5x+2) + (7x-1) = 180
7x+8+5x+2+7x-1=180
7x+5x+7x=180-8-2+1
19x=171
X= 171/19
X=9

Therefore x=9
7 0
3 years ago
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castortr0y [4]
D^2 + 17d + 72 = 0
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6 0
3 years ago
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Find the percent change from $20 to $25
Viktor [21]

Answer:

20%decrease

Step-by-step explanation:

sorry I'm bad at explaining things

5 0
3 years ago
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