Answer:
23
Step-by-step explanation:
supplementary angles: 180-85 = 95
95 = 5x-20 ( i forgot the name of the rule, something relating to same side interior angles i think)
115 = 5x
23= x
hope that helped
-7x+y=42
y=42+7x
5x+13y=66
Substitute for y (meaning put 42+7x into the equation above instead of y because they are equal - see second line of my answer above)
5x+13[42+7x] = 66
5x +546 = 66
5x=66-546
5x=-480
x=-480/5
x=-96
Answer:
The answer is "0.2352".
Step-by-step explanation:
Given:
The chance of selecting a odds blue block 
total number of events are 13+4= 17
Calculating the probability of choosing the blue block
Answer:
x^6 +2x^5 -6x^4 +3x^2 +6x-18
Step-by-step explanation:
f(x) = x^2 +2x-6
g(x) =x^4 +3
We are going to multiply them
f(x) * g(x)= (x^2 +2x-6)(x^4 +3)
First (x^2 +2x-6)(x^4) = x^6 + 2x^5 -6x^4
Then x^2 +2x-6)(3) = 3x^2 +6x-18
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x^6 +2x^5 -6x^4 +3x^2 +6x-18
2/3 was the rate per hour of the water level change because you would simplify 4/6 and you would get 2/3.
