The mistake was in step one when she added the 9 to both sides
x^2 + 8x - 9 = 0
__ + __ = 8 (b)
__ • __ = -9 (a•c)
blanks = -1 and 9
(x - 1)(x + 9)
Solve for x in each one
x = 1 or -9
Answer:
Length of Arc = 4
Step-by-step explanation:
Circumference is the whole circle's perimeter.
Arc length is a "part" of the circumference.
Whole circle is 360 degrees, so the arc length with a central angle of 72 degrees will be:
72/360 = 1/5th of the whole circle
The whole circle has circumference of "20", so 1/5 th of that would be:
(1/5) * 20 = 4
Length of Arc = 4
Answer:
296 Cucumbers
Step-by-step explanation:
I think it maybe 296 because since each plant produced 37 cucumbers and there are 8 plants you have to do 37 x 8 and you get 296.
1 kid eats
![30 \div 6 = 5](https://tex.z-dn.net/?f=30%20%5Cdiv%206%20%3D%205)
lollies in 5 hours
So 1 kid eats 10 lollies in 10 hours
10 kids eats
![10 \times 10 = 100](https://tex.z-dn.net/?f=10%20%5Ctimes%2010%20%3D%20100)
lollies in 10 hours
In the given table, we can calculate the sample space of the problem. The sample space includes all the categories of the people involved. The sample space is the total of the numbers given. This is equal to 300. The probability ofgetting someone who tests positive, given that he or she had the disease is 141/300 equal to 47 percent