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Gre4nikov [31]
3 years ago
13

12 out of 30 people chose their favourite colour as blue. calculate the angle you would use for blue on a pie chart.

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
4 0
You'd first have to find out what percentage of people would be 30 out of 100%
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Please help with this question
astraxan [27]

Answer:

x = -8/2

Step-by-step explanation:

To make the equation easier to work with, our first step will be to make all of our fractions have a common denominator. Both 2 and 4 are factors of 8, so that will be our common denominator.

Old Equation: 1/4x - 1/8 = 7/8 + 1/2x

New Equation (with common denominators): 2/8x - 1/8 = 7/8 + 4/8x

Now, we're going to begin to isolate the x variable. First, we're going to subtract 2/8x from both sides, eliminating the first variable term on one side completely.

2/8x - 1/8 = 7/8 + 4/8x

-2/8x                    -2/8x

__________________

-1/8 = 7/8 + 2/8x

We're one step closer to our x variable being isolated. Next, we're going to move the constants to the left side of the equation. To do this, we must subtract by 7/8 on both sides.

-1/8 = 7/8 + 2/8x

- 7/8  -7/8

______________

-1 = 2/8x

Our last step is to multiply 2/8x by its reciprocal in order to get the x coefficient to be 1. This means multiply both sides by 8/2.

(8/2)  -1 = 2/8x (8/2)

The 2/8 and 8/2 cancel out, and you're left with:

-8/2 = x

I hope this helps!

7 0
3 years ago
What is 3.1 divided by 10.261
Otrada [13]
What is 3.1 divided by 10.261Very simple. We have 2 given decimal number in which our dividend which is the 3.1 is lesser than our divisor which is 10.261.Now, let's start the division to be able to find out what is the quotient we're looking.=> 3. 1 / 10.261 = 0.30.Thus, the quotient is o.30, let's check if we got the correct answer.To check simply do the reverse method=> .30 * 10.261 = 3.1<span>
</span>
6 0
3 years ago
PLZZZ ANSWER ASAP!!!
alexgriva [62]

Answer:

(-3,-2)

Step-by-step explanation:

when it is reflected across the y axis then the X coordinate changes to -

6 0
3 years ago
The reflection of point S across the y-axis is point
Ostrovityanka [42]
Point V
Also point V
(-5,-5.5)
3 0
3 years ago
Find the missing length indicated.<br> 18<br> ?<br> 4<br> 8<br> A) 21<br> C) 9<br> B) 3<br> D) 25
Reika [66]
I think the answer is 9
8 0
3 years ago
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