Answer:
(x + 7)(x - 7)
Step-by-step explanation:
We need to factor [ x² - 49 ]
The middle number is 0 and the last number is -49.
Factoring is when we fill in the blanks for [ (x + _)(x + _) ]
We need to know what goes in the blanks, we need to know:
- two numbers that add to get 0
- two number that multiplied together get -49
We can try 7 and -7.
7 + (-7) = 0
7 * (-7) = -49
This works, so fill in the blanks for the factor.
(x + 7)(x + (-7))
(x + 7)(x - 7)
Best of Luck!
Answer:
2
Step-by-step explanation:
Constants in an equation represents numbers. They are not attached to any variable. Given the equation y = 3x + 2, you will see that the term that is standing alone without a variable here is 2. This shows that the constant used in the equation is 2
You would plug 15 and 21 into the equation provided so 15/21=x/100. You could then cross multiple giving you 21x=1500. You would divided by 21 on each side to isolate x. This should give you 71 and a super long decimal which is equal to 3/7. So the correct answer is 71(3/7)%. You could also just do 15 divided by 21 but that's to simple. Hope this helps!
Answer:
Step-by-step explanation:
<u>Use the law of sines:</u>
- a / sin A = b / sin B = c / sin C
<u>Apply to the given triangle:</u>
- AC / sin 39 = 32 / sin 60
- AC / 0.629 = 32 / 0.866
- AC = 0.6293*32/0.866
- AC = 23.3 (rounded)
