The perimeter is just adding all the sides together.
a.) 180 = 40 + 40 + x + x
180 = 80 + 2x Subtract 80 on both sides
100 = 2x Take 1/2 of 100 to get x
x= 50cm
b.) 1000 = 150 + 150 + x + x
1000 = 300 + 2x Subtract 300 on both sides
700 = 2x Take 1/2 of 700 to get x
x = 350
Answer:
area = 50.27 sq inches
circumference = 25.14 in
Step-by-step explanation:
given radius r = 4 in
area = πr² = 3.142 x 4² = 50.27 square inches
circumference = 2πr = 2 x 3.142 x 4 = 25.14 inches
Answer:
"Take the square root of both sides of the equation"
A is correct
Step-by-step explanation:
We are given quadratic equation
We need to solve for x. We have to isolate x here.
Here square on x. So, first we get rid of square.
Taking square root both sides to get rid of square.
For example:
a2=25
sqare a2 = +- sqare 25
x2=9/16 to solve for x
sqare x2 +- sqre 9725
x=+- 3/5
Hence, "Take the square root of both sides of the equation"
Answer:
y=-5
Step-by-step explanation:
-3(-4-6y)+7(-y+5)=-8
12+18y-7y+35=-8
11y+47=-8
11y=-8-47
11y=-55
y=-55/11
y=-5