4x - 10y = 12
2 (2x - 5y) = 12
2x - 5y = 12 / 2
2x - 5y = 6
This is the real answer.
Now,
if you want to find "x", it will be,
2x - 5y = 6
2x = 6 + 5y
x = (6 + 5y) / 2
And,
if you want to find "y", it will be,
2x - 5y = 6
5y = 2x - 6
y = (2x - 6) / 5
Answer: To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.
Step-by-step explanation:
Answer:
24 cars
Step-by-step explanation:
out of 80 toys, 3/5 are buses- 80 * 3/5 is 48 so there are 48 buses
80 - 48 is 32, 32 of the rest of the toys are cars and bikes
we know that there are 3 times as many cars than bikes, so to find out how many cars and bikes there we can do 3n + n, where n is the number of bikes it also equals 4n
32 = 4n; n = 8
there are 8 bikes, so there are 24 cars
Answer:
b im not sure
Step-by-step explanation:
Answer: 4/18
Step-by-step explanation:
