Answer:
(5a - [2b - 7c]) and (5a + [2b + 7c])
Step-by-step explanation:
Factor 25a^2 - 4b^2 + 28bc - 49c^2.
Note that - 4b^2 + 28bc - 49c^2 involves the variables b and c, whereas 25a^2 has only one variable. Thus, try to rewrite - 4b^2 + 28bc - 49c^2 as the square of a binomial:
- 4b^2 + 28bc - 49c^2 = -(4b^2 - 28bc + 49c^2), or
-(2b - 7c)^2.
Thus, the original 25a^2 - 4b^2 + 28bc - 49c^2 looks like:
[5a]^2 - [2b - 7c]^2
Recall that a^2 - b^2 is a special product, the product of (a + b) and (a - b). Applying this pattern to the problem at hand, we conclude:
Thus, [5a]^2 - [2b - 7c]^2 has the factors (5a - [2b - 7c]) and (5a + [2b + 7c])
Answer:
Step-by-step explanation:
Let the points be A and B
A ( -13 , 15 ) ⇒( x₁ , y₁ )
B ( 20 , -7 )⇒( x₂ , y₂ )
<u>Finding</u><u> </u><u>the</u><u> </u><u>slope</u><u> </u> :
plug the values
⇒
We know that, 
⇒
Calculate the sum
⇒
Reduce the numbers with G.C.F 11
⇒
Hope I helped !
Best regards!!
hellooo
Step-by-step explanation:
so sine is 0 and (-1/3 isnt gonna positive out on the other side no is positive so ur last answer E is it
Answer:
−16/67
Step-by-step explanation:
Answer:
Step-by-step explanation:
8 days x 3 inches= 24 inches
(The amount of inches the water went down)
24 inches - 6 inches ( amount the water went up on the 9th dat)
= 18 inches
So, the answer would be:
The total difference over the 9 days, the water went down 18 inches.
