There are 72 students in the gym. 45 students are girls. The rest are boys. What is the ratio of boys to girls?
1 answer:
You might be interested in
Answer:
They will each have saved $70.
Jessica is saving at a faster rate than Raphael.
The rate at which Jessica is adding to her savings is $4 per week more than the rate at which Raphael is adding to his savings.
Step-by-step explanation:
The formula for Jessica’s savings is
y = 10x + 20
She is saving at the rate of $10/wk .
From Raphael’s table, he started with $40 and is saving at the rate of $6/wk.
The formula for Raphael’s savings is
y = 6x +40
When the two savings are equal
10x + 20 = 6x + 40 Subtract 20 from each side
10x = 6x + 20 Subtract 6x from each side
4x = 20 Divide each side by 4
x = 5
Their savings will be equal after five weeks.
=====
After five weeks , Jessica will have saved
y = 10×5 + 20
y = 50 + 20
y = $70
Raphael has also saved $70.
=====
Jessica is saving at a faster rate than Raphael.
She is saving at the rate of $10/wk, while he is saving at the rate of $6/wk.
The rate at which Jessica is adding to her savings is $4/wk more than the rate at which Raphael is adding to his savings.
The red line in the graph shows that Jessica starts with $20. After five weeks, she has caught up to Raphael, who also has $70 after five weeks.
Answer:
2121 Rounded to the nearest inch.
Step-by-step explanation:
A = Is the formula for a circle, but we only have a portion of a circle so we will have to adjust the formula for a part of the circle.
A =
The
is the part of the circle and the whole circle is 2
is the same as
÷
Which is the same as
x
Which is the same a
A =
A = (3.14)(90)(90) = 2119.5. When you use the
on your calculator you get a slightly different number. This is due to rounding.
A = 2120.575041