What is the value of X
A 21
B 41
C 20
D 22
1 answer:
Answer:
22
Step-by-step explanation:
Let the bottom be y for the small triangle
So the total length of the bottom is 2y
We can use ratios to solve
x-1 1y
----- = --------
42 2y
Canceling the y's
x-1 1
----- = --------
42 2
Using cross products
2(x-1) = 42
Divide by 2
x-1 = 21
Add 1 to each side
x-1+1=21+1
x = 22
You might be interested in
200.000 for the nearest tenth hundred and 243.900 for the nearest hundred
The answer is 5 + 2a = 19
Answer:
The 3rd one, The 1st one and The last one.
Step-by-step explanation:
Answer:
4x.
Step-by-step explanation:
If the scale factor is 2 then the area factor is 2^2 = 4.
So the area of the new triangle is 4*x.
9 and -1 9*-1=-9 and 9-1=8
