Answer: 32
Step-by-step explanation:
#1= -4 and 2
#2= -9 and 2
#3= -10 and 4 I think you meant -14 as a sum
We have been given that various circular targets are used by archery students. Daryl is using a target with an area of 36π square inches. We are asked to find the circumference of the target.
To find the circumference of the target, we will use area of circle and circumference of circle formulas.
We know that area of circle is and circumference of circle is , where r represents radius of circle in both formulas.
First of all, we will equate area formula with given area of target and solve for r as:
Now we will take positive square root as:
Therefore, radius of circle is 6.
Now we will substitute in circumference of circle formula.
Therefore, the circumference of target is .
Answer: 19/28
Step-by-step explanation:
3/7 + 1/4
Find the LCM for 7 and 4
12/28 + 7/28 = 19/28
X=number of boys in the club at first
y=number of girls in the club at first.
(x+y) = members were in the club at first.
We can suggest the next system of equation.
x/y=1/2 ⇒ x=y/2
(x+5)/y=3/4 ⇒4(x+5)=3y
Finally, we have the next system of equations:
x=y/2
4(x+5)=3y
We are going to solve by substitution method.
4(y/2 + 5)=3y
2y+20=3y
2y-3y=-20
-y=-20
y=20
x=y/2
x=20/2
x=10
(x+y)=10+20=30
Answer: There were 30 members int the club at first, they were 10 boys and 20 girls.