2x^2 - 2x - 12 = 0
a) The GCF is 2x
2(x^2 - x - 6) = 0
What multiplies to negative six and adds to negative 1?
Negative 3 and positive 2.
2(x-3)(x+2) = 0
Solutions:
3, -2
The answer is 10 days
(after 4 days, they still needed to install 360 chairs, 600-360=240 - meaning they installed 240 chairs in 4 days. to find out how many chairs they installed in 1 day, divide 240 by 4 and you find they installed 60 chairs per day. Then divide 360 by 60 to find the remaining days needed to install the rest of the chairs, which is 6 days then add it onto the 4 days already completed)
Answer: 3 11/12
Explanation: convert the fractions 1/4 and 1/3 to fractions with a denominator of 12. Your fractions become 3/12 and 4/12. Subtract 4/12 from 5 3/12 and get 4 11/12. Subtract one and get 3 11/12.
Answer:
7
Step-by-step explanation:
Do the brackets first
X+8= 8x
X+8= 8x
then you plus 8x + 8x =16x
16x -9 =7x
Answer:
Trigonometry can be used to measure the height of a building or mountains
Step-by-step explanation:
if you know the distance from where you observe the building and the angle of elevation you can easily find the height of the building. Similarly, if you have the value of one side and the angle of depression from the top of the building you can find and another side in the triangle, all you need to know is one side and angle of the triangle.
