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Anvisha [2.4K]
2 years ago
6

Please help I’m struggling 20 points

Mathematics
2 answers:
nata0808 [166]2 years ago
6 0

Answer:

D) 38.7 meters

Step-by-step explanation:

A pitched roof has a rise of 12.9 meters

If the rise to span ratio is 1:3 than the 1 represents 12.9

so 12.9 x 3 = 38.7

alisha [4.7K]2 years ago
4 0
38.7 because 12.9 times 3 is 38.7
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How do you do that?????
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This question is easy once you understand. So when adding, subtracting, multiplying, or dividing with whole numbers you turn it into a fraction. So 12 is going to become 12/1. 8 1/8 is a mixed number so we have to turn it into an incomplete fraction. Here is how you do it. Multiply the denominator by the who number. So 8 x 8 = 64. Then you add your product to the numerator, which will make it 65. Then after this you keep your denominator giving you 65/8. Now we have to find the common denominator by finding the LCM. So the LCM is 8. Next we divide the old denominator by the new denominator. So 1 goes into 8, 8 times. And next 8 x the numerator. so 8 x 12 = 96. We do the same to the other side. Now we have 96/8 - 65/8 = 31/8. Finally we make this a mixed number. So 31 divided by 8. So you should get 3 7/8. 

I hope this helps! :)
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3 years ago
Jessica grows two types of tomato plants in her garden. For each type, she records the heights, in inches, of five plants.
Artyom0805 [142]
The answer is D 
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5 0
3 years ago
Read 2 more answers
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egoroff_w [7]

Answer:

A

Step-by-step explanation:

7 0
3 years ago
Select expressions that are equivalent to 5x - 15 - 20x + 10
nordsb [41]

Answer:

-15x - 5

Step-by-step explanation:

5x - 15 - 20x + 10

5x - 20x - 15 + 10

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8 0
3 years ago
X-1=y what is the answer plz give me the answer
guajiro [1.7K]

Answer:

<h2>X = 0</h2><h2>Y = 1</h2>

First of all, observe that this is a line, since you can rewrite the equation as y−x+1=0 , which follows the pattern of the generic line ax+by+c=0 .

To draw a line you need two of its points, which you can connect.

To find two points, you can plug any value for one variable, and solve for the other.

For example, let's choose

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The first point is thus (0,−1).

Then, let's choose

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Step-by-step explanation:

Hope it is helpful...

6 0
3 years ago
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