Answer:
24 girls
Step-by-step explanation:
Ratio girls to boys: 4:7
The ratio involved a total of 11 people.
There are 66 students in fifth grade, and there is a 4:7 girl to boy ratio.
66/11 = 6
<u>Girls: 6 x 4 = 24</u>
Boys: 6 x 7 = 42
The total of girls to boys should be equal to 66.
24+42=66
Answer:
0
Step-by-step explanation:
-4, -2, 0
the 3rd number is always a 0 so if you do the sequence 78 times the 78th term will be a 0
We know that Ava is paying $2 dollars per week so if L is the money that she owes and t is the number of weeks, and I is the initial debt so we can write an equation like:
Now we can replace the info we have to find the value of I so:
and we solve for I
So the final equation will be:
Subsitution
4x+y=210
minus 4x both sides
y=210-4x
sub 210-4x for y in other equation
3x+2(210-4x)=195
3x+420-8x=195
-5x+420=195
minus 420 both sides
-5x=-225
divide both sides by -5
x=45
sub back
y=210-4x
y=210-4(45)
y=210-180
y=30
x=45
y=30
(x,y)
(45,30)
