You multiply each side of the sides and then divide if needed
I do not know if you mean x² or 2x, so here are both equations:
Equation 1:
x² - 16 = 0
x² = 16
x = √16
x = <span>±</span>4
Solutions: x = 4 and x = -4
Equation 2:
2x - 16 = 0
2x = 16
x = 8
Solution: x = 8
Answer:
She should have used One-half (9.4) (11.9) to represent the area of a single triangle
Step-by-step explanation:
The pyramid is composed by 4 triangles and 1 square
area of the square: base² = 9.4²
area of each triangle = 1/2*base*height = 1/2*9.4*11.9
surface area of the pyramid = 4*area of each triangle + area of the square = 4*(1/2*9.4*11.9) + 9.4²
NUMBER 3 :
150 feet / 15 = 10 units
120 feet / 15 = 8 units
So it will be 10 units by 8 units
NUMBER 4:
A) 525/4.2 = 120
The scale used was 120
B) 0.6 inches = 0.0152
525 / 0.0152 = 35 sheets tall
Answer:
This is 27% decrease.
Step-by-step explanation:
The amount of rainwater collected last year was 15.6 L, and this year it was 11.4 L, this means 15.6 L-11.4 L= 4.2 L less water was collected this year than last year.
This 4.2 L is
percent of the amount of water collected last year. Evaluating this we get:
Rounding to the nearest percent this is 27%.
Thus, the percent decrease in the amount of rainwater collected is 27%.
