5 x 90 = 450
When you multiply numbers with zeros, you first multiply the numbers and then add the zero(es) at the end.
5 x 9 = 45
5 x 90 = 450
Answer:
23
Step-by-step explanation:
8x-77=3x+38 > 8x=3x+115 > 5x=115 > x=23
Since this is a proportion, we cross multiply.
12/2=9/x (The variable "x" is used the represent the unknown number, and this is the number we are solving for)
12*x=2*9 (Cross multiply)
12x=18 (Simplify)
x=18/12 (Divide each side by 12)
x = 3/2 (Simplify fraction)
The unknown number is 3/2, or 1.5.
Answer:
45
Step-by-step explanation:
did this help
X = 20
This is an isosceles triangle so third angle is also 2x because of symmetry.
Angle sum = 5x + 2x + 2x = 9x = 180 degrees
