To find a,construct a line that parallel to AB and DE cutting c, which you could refer to the photo((sorry for my terrible diagram ^^;;
from the photo,we can see that
a= <BCG + <GCE
<BCG=44° (alt.<, AB//FG)
<GCE=20° (alt<, FG//DE)
thus,a= 44°+20° =64°
hope it helps!
Answer:
x=-7
Step-by-step explanation:
-8x = 56
divide both sides by -8
that leaves you with x = -7
you can plug it in to check because -8 * -7 = 56
Answer:
42x-27
Step-by-step explanation:
7(6x-4)+1 is your original expression. Distribute to get 42x - 28 + 1. Combine like terms and add 1 to -28, which is -27. So, 42x-27 is your answer.
The rule for this sequence is times 9, (which is x9)
So the next 3 terms would be -54, 162, -81
Hope this helps
Firstly we need to find out what part of the bag are the red, green and blue marbles alltogether. To do that we may look for the common denominator and check how far away will the result be from 1 (whole content of the bag).
1 - (1/2 + 1/4 + 1/5) =
= 1 - (10/20 + 5/20 + 4/20) =
= 1 - 19/20 =
= 1/20
It means that remaining 2 white marbles are 1/20 of the bag's contents. And if 1/20 of the bag is 2, then:
10/20 of the bag = 2 * 10 = 20 red marbles
5/20 of the bag = 5 * 2 = 10 green marbles
4/20 of the bag = 4 * 2 = 8 blue marbles
Answer: There are 10 green marbles in the bag.
I hope I didn't make it too complex :)