Answer:
x = 22
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the interior angles
6x+1 = 79+ 2x+10
Combine like terms
6x+1 = 2x+89
Subtract 2x from each side
4x+1 = 89
Subtract 1 from each side
4x = 88
Divide by 4
4x/4 = 88/4
x = 22
Answer:
The ratio of boys to girls to 5:7
Let the number of boys be 5x
Let the number of girls be 7x
5x = 30
x = 6
Now just plug in 6 for the x in 7x
and number of girls 7 x 6 = 42
Answer:
36
Step-by-step explanation:
0.75 is 3/4, so 48*0.75=48*3/4=36.
A. C=1.46n because on order to find the constant rate you would divide 23.36/16 which gives you 1.46. That is the price of 1 gallon which would change depending on the amount of falling a purchased (n) and give you the total price of (C).
For this case, the first thing we must do is define variables.
We have then:
x: number of years
y: total change in time (seconds)
We now write the equation that models the problem.
We know that each year the time decreases by 8 seconds.
Therefore, the equation is:
For the year number 5 we have:
Answer:
the total change in time is 40 seconds