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melisa1 [442]
4 years ago
15

Help please ASAP thx all of them

Mathematics
1 answer:
Radda [10]4 years ago
6 0
Hi, these equations are pretty easy actually, first thing you should know when working with variables is that you always want to leave the variable alone, let's take the third excersise for example, 12x + 2 = 146. Here you just do the opposite on the other side of the equation depending if the number is positive or negative. Since x is being multiplied by 12 you first get rid of the 2, since its positive you subtract it to 146. Now the answer should be 12x = 144. Now since you're multiplying 12 to x you just divide 12 from 144, 144/12 = 12
x = 12
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A running track in the shape of an oval is shown. The ends of the track form semicircles.
tigry1 [53]

Answer:

Two semi circles would equal one circle.

The perimeter of a circle is PI x diameter.

The diameter of the circle is shown as 56 m

The perimeter of the 2 ends = 56 x 3.14 = 175.84

The length of the inside of the track is given as 130 m, and there are 2 sides so 130 + 130 = 260 m.

Total perimeter = 260 + 175.84 = 435.84 m.

Step-by-step explanation:

3 0
3 years ago
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Vikki [24]

Answer:

D = -6

Step-by-step explanation:

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3 0
3 years ago
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3 0
3 years ago
A box contains 7 red balls and 2 blue balls. how many more blue balls do you need to add to the box to make the probobility of p
xenn [34]

Using the probability concept, the number of blue balls you need to add is:

D) 5.

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

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

A probability of 0.5 is reached if the number of red balls is the same as the number of blue balls. Current the difference is of 7 - 2 = 5, hence 5 blue balls must be added.

More can be learned about probabilities at brainly.com/question/14398287

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5 0
2 years ago
I need help on 1, 2, an 3
e-lub [12.9K]

Answer: 1. A) 2/5 B) X= -5 Y= 2

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B) This is where the line intersects the X and Y axis

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3 years ago
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