X^2 + 8x + 7 = 0
x^2 + 7x + x + 7 = 0
x(x + 7) + 1(x + 7) = 0
(x + 7) (x + 1) = 0
x = -7 or x = -1
First we find the circumference
c=2pir
r=3
2pi3
6pi=c
then find out how much of the circle is 50 degreese
50/360=5/36
6pi times 5/36=5pi/6=aprox 2.62
it should be 5pi/6
subtraction:
5/8 - 1/8 = 4/8which reduces to 1/2 pound left
Answer:
x = 5
Step-by-step explanation:
Given
= 
( cross- multiply )
16x = 80 ( divide both sides by 16 )
x = 5
Answer: The number generator is fair. It picked the approximate percentage of black socks most of the time.
Step-by-step explanation:
A dot plot is a display of dots which represents graphically a data.
Given data of a drawer contains black socks and white socks which 40% are black socks.A number generator simulates randomly selecting 10 socks from the drawer.
The display is representing the number of black socks in each trial of 10 times.
We can see for most of the trial there is no dot ;that is no black socks.
Only in 2nd to 5th trial black socks picked in approximated percentage of 40%.
⇒The number generator is fair. It picked the approximate percentage of black socks most of the time.
