I believe this is the way to solve it.
22 - 2 = 20
20 is 90.9% of 22
So the probability of choosing a student with a sibling at random should be 90.9% (or you can round up to 91%)
I hope this helps :)
Answer:
(-2,8)
Step-by-step explanation:
8x + 9y=56
-9x + y = 26
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-9x + y = 26
+9x = +9x
y = 9x + 26
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8x + 9(9x+26) = 56 <-- substitute for y from above
8x + 81x + 234 = 56
89x + 234 = 56
- 234 = - 234
89x = - 178
x = -2 <--- we got the x value!!
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-9x + y = 26
-9 (-2) + y = 26 <-- substitute for x from above
18 + y = 26
- 18 = - 18
y = 8 <-- we got the y value!!
Answer:
(x + 4) x 2
Step-by-step explanation:
x represents number of cookies Alice ate.
x + 4 represents the number of cookies Tim ate.
As Bob had eaten twice the number of cookies that Alice ate the expression should be
(x + 4) x 2
144pi
becous the radius is 24pi/(pi*2) and thet is 12
now 12²*pi is 144pi
Answer:
it will be a straight line side to side, on the -5 y
