6. C
answer is 65 your answer is C
7.A
15.5
The most efficient way to solve this problem is isolating the y in the first equation because:
6x + 3y = 27
3y = 27 - 6x
y = 9 - 2x
Since all the numbers have a common factor of 3, it can be easily simplified/reduce.
If you used any other variable, you would have gotten a fraction.
Now that you found y, you can substitute it into the other equation to solve for x.
ANYWAYS, your answer is A
Answer:
C. 3/2 Radians
Step-by-step explanation:
As we know, a radian is defined as "the angle enclosed by an arc equal to the radius", or some variant of such.
This means 1 radian in this circle would have an arc length of 8cm.
Simple proportions should get you an answer:
![\frac{1 \: radians}{8cm} = \frac{x \: radians}{12cm} \\ 8x = 12 \\ x = \frac{12}{8} \\ x = \frac{3}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%20%5C%3A%20radians%7D%7B8cm%7D%20%20%3D%20%20%20%5Cfrac%7Bx%20%5C%3A%20radians%7D%7B12cm%7D%20%5C%5C%208x%20%3D%2012%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B12%7D%7B8%7D%20%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B3%7D%7B2%7D%20)
They will spend $152.881 because when you divide the total amount of miels by the 20 miels you will get 52.9 miels than you are going to multiply the 52.9 miels by the amount of money for one gallon u get $152.881 dollars for 52.9 times you put in gas on the car.
Y = -10/3 X ; 10/3
the last choice