Let a be the variable for the equation.
now equation for the situation is 1a + 2(a-3) = 91.50
1a + 2a - 6 = 91.50
3a = 97.50
thus, a = 97.5/3 = 32.5$
Now, price of first blouse = 32.5
The price of other two blouse = 32.5-3 = 29.5$
Let A and B be the two complementary angles.
A = smaller angle = 2x
B = larger angle = 13x
x = some unknown number
Note how the ratio A:B turns into 2x:13x which simplifies to 2:13
A+B = 90 ... because the angles are complementary
2x+13x = 90 ... substitution
15x = 90
x = 90/15
x = 6
A = 2*x = 2*6 = 12 degrees
B = 13*x = 13*6 = 78 degrees
The two angles are 12 degrees and 78 degrees.
Check:
A/B = 12/78 = (2*6)/(13*6) = 2/13, so A:B = 2:13
A+B = 12+78 = 90
Answer:
-13
Step-by-step explanation:
you just start from -8 and work backwards.
so it's -8 multiply 4 to get -32, then add 6 to get -26, then divide 2 to get -13.
when you check from the beginning with -13, then it fits and the answer is -8!
The average rate of growth of the ice can be found by dividing the thickness by the number of days of growth
The growth rate of the ice over the 8 days is <u>0.375 inches/day</u>
Reason:
The known information on the ice are;
The time it took the ice to reach a thickness of 3 inches = 8 days
Required:
The (average) rate that the ice is growing in c=inches per day
Solution:
Therefore;
The (average) rate of growth of the ice over the 8 days is <u>0.375 inches per day</u>
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