<span>C side EF=18 cm; side GH = 30 ; height = 6 cm </span>
Each box may receive more than one letter.
By substitution is how to solve
2x-3y=21
y=3-x
2x-3(3-x)=21
2x-9+3x=21
5x=30
x= 6
now substitute our x value into y=3-x
so we get
y=3-6 = -3
so x=6 and y=-3 hope this helps!!!!! Thank you!
Answer:
A. 3
Step-by-step explanation:
The answer would be A because 3 times 3 is 9 and 9-4=5 which is the value o f y. 3x-4=5
add 4 to both sides: 3x=5+4
simplify: 5+4=9
divide both sides by 3: x= 9/3
simplify 9/3 to 3:
x= 3
hope this helps!!
Josiah would need 10 gallons to travel 265 miles.
First we divide 79.5 by 3 to find out how many gallons are needed for one mile.
79.5/3=26.5
For one mile we need 26.5 gallons of gas.
Now we will divide 265 by 26.5 to find the answer to the problem.
265/26.5=10
Josiah will need 10 gallons of gas to travel 265 miles
