9514 1404 393
Answer:
(x, y) = (3.5, -4)
Step-by-step explanation:
Elimination is easiest if one of the coefficients of a variable is a multiple of the other coefficient of the variable. Here, we have x-coefficients of 4 and 8, so it will be easiest to eliminate x.
Subtract the second equation from 2 times the first.
2(4x +7y) -(8x +5y) = 2(-14) -(8)
9y = -36 . . . . . simplify
y = -4 . . . . . . . divide by 9
4x +7(-4) = -14 . . . . substitute for y in the first equation
4x = 14 . . . . . . . add 28
x = 3.5 . . . . divide by 4
The solution is (x, y) = (3.5, -4).
Volume of cylinders = pi x r^2 x height
Simplifying the ratio:
1.6/3 = 16 / 30 (multiply and divide by 10 to remove the decimal)
<span>
Volume Ratio = 512:27</span>
Answer:
<u>5 kilo-meters per liter of gas</u>
Step-by-step explanation:
180 divided by 12 would be 180 / 12 = 5 km per liter
<em>(P.S., pls mark me brainliest, and have a nice day)</em>
Answer:
There are two bricks in the bag.
Step-by-step explanation:
1 1/3 can be written as 4/3 bricks in a bag.
(4/3)/(2/3) = 2
There are two bricks in the bag.
Answer:
10
Step-by-step explanation:
The first thing you do is:
12 % 6 = 2
Then you have to:
2 x 5 = 10
You divide the denominator then multiply it by the Numerator
