Yes, you can check this by setting the fractions equal to eachother and cross multiplying them. In this case both are equal to 100 therefore they're the same thing
85) I gonna do substitution to solve them.
First lets find number of boys.
boys = x
girls = x - 5
27 = x + x - 5 --) 27 = 2x - 5 --) 32 = 2x --) 16 = x
There are 16 boys.
Now do the opposite with girls.
boys = x + 5
girls = x
27 = x + x + 5 --) 27 = 2x + 5 --) 22 = 2x --) 11 = x
There are 11 girls.
86) I gonna do subsitution to solve this problem too.
x + y = 82
6x + 2y = 284
First find # of car magnets
y = -x + 82
6x + 2( -x + 82 ) = 284 --) 6x - 2x + 164 = 284 --) 4x + 164 = 284 --) 4x = 120 --)
x = 30
There are 30 car magnets.
x = -y + 82
6( -y + 82 ) + 2y = 284 --) -6y + 492 + 2y = 284 --) -4y + 492 = 284 --) -4y = -208 --) 4y = 208 --) y = 52
There are 52 bumper stickers
Answer:
t = -3
Step-by-step explanation:
Given: -8t = 27 + t, we must isolate the variable; in this case, the variable is t.
So, to isolate the variable, we will move all terms containing t to the left side of the equation.
Therefore,
-9t = 27
Then, we divide each term by -9 and simplify.
We get:
t = -3
Hope that’s what you were asking for:)
Answer:
Step-by-step explanation:
So, kids are divided into 8 total parts.
7 - 1 = 6 more parts that are boys. The 48 extra boys are those 6 parts.
48/6 = 8 boys per part
All parts have the equal number of kids, so one part girls also has 8.
There are 8 girls (and 56 boys. 8:56 = 1:7).
