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Sholpan [36]
4 years ago
13

How to solve this equation and check it. a - 2.5 = 4.5?

Mathematics
1 answer:
Bezzdna [24]4 years ago
5 0

Answer:

Step-by-step explanation:

a - 2.5 = 4.5

     2.5 = 2.5

a = 7.0 or 7

7.0 - 2.5 = 4.5

4.5 = 4.5

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The options seem a bit mis-formatted but here is the way p is computed:

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so p=100 \frac{2000-1600}{2000} = 100 \frac{400}{2000}

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3 years ago
Simplify the expression: 4(2a)+7(-4b)+(3b-5)
Alexus [3.1K]
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4 years ago
What are the coordinates of the image of C if it is reflected across the x-axis?
Svetradugi [14.3K]

Answer:

(-2, 4)

Step-by-step explanation:

~When reflecting a point of the x-axis, the x value (or first number inside the parenthesis) does not change.

The reason the x-value does not change is because you are reflecting over the x-axis, making the point go up or down. That will change the y-value but the x-value only changes if you move to the left or the right. In this case, you can see that the point's x-value is -2, so that will not change. It's current y-value however is -4. When reflecting over an axis, the number that is changing (in this case the y-value) will just be flipped from positive to negative, or vise versa. In this case, -4 will be reflected to be 4, making point C reflected over the x-axis (-2, 4).

5 0
3 years ago
Read 2 more answers
Your personal library contains books written by 165 authors. 60% of the authors are men. 40% of the authors write only nonfictio
Ludmilka [50]
Lets discern the infomation:

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so there are 99 men

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3 0
3 years ago
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matrenka [14]

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5 0
4 years ago
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