Answer:
448
Step-by-step explanation:
7 x 2 x 2 x 2 x 2 x 2 x 2 = 448
We are given equation: 34b−23b=−9.
We can see 34b and 23b both has b's with them.
So, we can combine like terms.
Comining means addition or subtaction.
We have minus sign in between 34b and 23b.
So, we need to subtract 34b and 23b.
On subtracting, we get
11b.
Therefore, we get
11b = -9.
Now, we need to divide by 11 on both sides. We get on dividing
b = -9/11.
Therefore, -9/11 can be enter in the boxes to write an equation that is equivalent to 34b−23b=−9.
since the triangles are similar
angle DEC = 60 degrees
3 angles inside a triangle equal 180 degrees
BAC = DCE = 64
CBA = EDC = 56
DEC = 180 -56 -64 = 60 degrees
used angle-angle theorem
Answer:
C. 120º
Step-by-step explanation:
so we know that the inside of a triangle is 180º and since all the measures are the same we can do 180/3 to find how much each angle is.
180/3 = 60º
now we also know that a straight line is equal to 180º and since we already have one angle, all we have to do is subtract 60 from 180.
180 - 60 = 120º
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