21) 3(X+1) =9+2X
3X+3 = 9+2X
X+3=9
X=6
Answer:
6825
Step-by-step explanation:
area=largo X ancho
area= 105 x 65= 6825
Let us say, the numbers are "a" and "b"
so their sum is 336, or
a + b = 336
and the first one is bigger than the second by 124
so... whatever "b" is, "a" is THAT plus 124, or
a = b + 124
thus one can say
a + b = 336
or
(b + 124) +b = 33
solve for "b"
what is "a"? well, a = b + 124
Answer:
2%
Step-by-step explanation:
You can convert percents into decimals by moving the decimal point(the period) two steps to the left. For example 2% goes to .02 in decimal form. Once you do that then you can multiply by the length the metal pipe was supposed to be and you get .6, since the piece of metal ended up being .6 centimeter off, the answer is 2%. sorry if it's not a good explanation ;-;.
For this case, the first thing we must do is define variables:
x: rental charge per day
y: rental charge per mile
We write the system of equations:
3x + 300y = 81
5x + 600y = 145
Solving the system we have:
x = 17
y = 1/10
Answer:
rental charge per day = 17 $
rental charge per mile = 1/10 $