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emmainna [20.7K]
3 years ago
12

PLZZZZZ NEED HELP!!!!!!!

Mathematics
2 answers:
andriy [413]3 years ago
6 0
15 cm because they are similar, and EF is the same line as BC
VLD [36.1K]3 years ago
6 0
Set up a ratio between corresponding sides

9/12 = 15/x - the cross product will be equal since the fractions are equal

9x = 180
x = 180/9 = 20
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What is 25 percent of 32?
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1.28 or 128

Step-by-step explanation:

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The human eye is approximately spherical in shape with a radius of about 12 mm
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3 years ago
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2x+14= -21-5x<br> Need to find out what x is but a step by step explanation please
adoni [48]
Notice how on both sides of the equation there is one coefficient (number being multiplied by x) and a constant (just a plain number). You want all constants to be on one side and all coefficients on the other. He’s how do to that:
2x+14=-21-5
I am choosing that all constants will be on the right side, so I will do the inverse operation of any constant on the left side to remove it. Here, a constant on the left side is 14. I will subtract 14 from both sides of the equation. Positive 14 minus 14 is zero, so it cancels out and removes it.
2x+14-14 = -21-5x
2x = -35-5x
See how the 14 is now gone? The equation looks much simpler now. Okay next, you can see that there is a coefficient on the “constant side” that I’ve chosen, so I am going to remove that. Negative 5 plus positive 5 equals zero. Do this on both sides of the equation.
2x+5x = -35-5x+5x
7x = -35
Now the equation is just two numbers. All that is left to do is divide by the last coefficient, 7, in this case.
7x/7 = -35/7
x = -5
8 0
1 year ago
Read 2 more answers
12.41-6.47 use benchmark to estimate
DedPeter [7]
The answer will be 5.94
4 0
4 years ago
Read 2 more answers
Eric and Mark were at a ball game and visited the concession stand. They each got a hamburger, and Mark got a lemonade and some
LenaWriter [7]
Write an out an equation using the information given. So:

8 + 5 + x - 2 = 14.5 
<span>13 + x - 2 = 14.5 </span>
<span>11 + x = 14.5 </span>
<span>x = 3.50

This means that the answer is D.

Hope this helped  :)</span>
3 0
3 years ago
Read 2 more answers
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