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elena-14-01-66 [18.8K]
3 years ago
5

22 is what percentage of 55%

Mathematics
1 answer:
Liula [17]3 years ago
3 0

Answer:

12.1

Step-by-step explanation:

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It takes 40 minutes for 8 people to paint 4 walls. How many minutes does it take 10 people to paint 7 walls?
77julia77 [94]
Let's first break it down to the time 8 people need for one wall. That would be 10 minutes, right? If one person would have to do it in stead of 8, you'd expect him to take 80 minutes.

To paint 7 walls, he would nee 7x80 = 560 minutes. 10 people would do that 10 times faster, ie., 56 minutes.

I know puzzles like these always have a mindtrick. Did I miss anything?? ;-)
3 0
3 years ago
Simplify tan(arcsec 1)
Lady_Fox [76]

Answer:

0

Step-by-step explanation:

Arc sec(1)=0, tan(0)=0

5 0
3 years ago
Simplity -4/3 ➗2/-6<br> -4<br> -2<br> 2<br> 4<br> I
yulyashka [42]

Answer:

-4

Step-by-step explanation:

-4/3÷2/-6

⇒ -4/3×-6/2

⇒ -24/6

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7 0
2 years ago
Is (7,8) a solution of the equation 2x+y=6
victus00 [196]

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7 0
3 years ago
Read 2 more answers
Question Write an equation of the line passing through the point A(0, 3) that is perpendicular to the line y = −1/2x−6
White raven [17]

Answer:

The equation would be y=2x+3 I am pretty sure

Step-by-step explanation:

This is because you take the slope which is 2 from the line y=-1/2x-6. To find the slope perpendicular to the line, you need to find the exact opposite of the slope: -1/2, and in this case, it would be 2.

(Ex: if it was -3/4, you would need to use a slope of 4/3 since it is the opposite)

Then you take that slope (2) and the point (0, 3) and put it into "y-y1=m(x-x1)"

y-y1=m(x-x1)

y-3=2(x-0)

-distribute the 2-

y-3=2x-0

-add 3 on both sides-

so equation would be y=2x+3

Not sure if this is all correct, but I hope it helps! :)

7 0
2 years ago
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