Answer:
x = 20
Step-by-step explanation:
The sum of the two angles is 90 degrees
x+3x+10 = 90
Combine like terms
4x+10 = 90
Subtract 10 from each side
4x+10-10 = 90-10
4x= 80
Divide each side by 4
4x/4 = 80/4
x = 20
4 3/4 - 2/5
Find a common denominator
4 15/20 - 8/20
Solve
4 7/20
The plank is 4 and 7/20 feet long now.
Answer:
setup below, you'll have to do the final calculation
Step-by-step explanation:
first perform the operation in parenthesis
2+39= 41
then do the multiplication 3 x 41
in general do calculations in this order
1. Parenthesis
2. Multiplication
3. Division
4. Addition
5. Subtraction
working from left to right
I think it’s -3 1/3 because if you count your lines after -3 to -2 you get 3 and it’s on the first line so 1/3! Hope this makes sense :)
