Answer:
6.5 * 10 ^ -9
Step-by-step explanation:
0.0000000065
Scientific notation means a* 10 ^b
where a is number between 1 and less than 10
Move the decimal 9 places to the right which means the power of 10 is negative since we moved the decimal to the right
6.5
The power of 10 is -9
6.5 * 10 ^ -9
A. Let x = cheese and
y = chocolate
2x + y = 25
x + y = 20
B. Subtract the second equation from the first.
2x + y = 25
-(x + y = 20)
-—————
x = 5
Plug 5 back in to the second equation and solve for y.
x + y = 20
5 + y = 20
Subtract 5 from both sides.
y = 15
5 cheese and 15 chocolate
Used elimination method because coefficients on the y values were both 1 so it was easy to subtract the equations and eliminate the y variable.
Answer:
Step-by-step explanation:
Slope is the fraction, or ratio, of the vertical change over the horizontal change of two sets of data. In this case, the slope is the rate at which the house rises over expands:
Simplifying the fraction to simplest form gives an overall rate of 1/6 ft.
Answer:
Step-by-step explanation:
Add you like terms. 4x plus 4x equals 8x. Then 5 plus 9 equals 14 so then you have 8x= 14 divide by eight on both sides and there you go.
Answer:
distance = 14.4222
midpoint = (1, -2)
Step-by-step explanation:
distance between two points:
sqrt(x₂ - x₁)² + sqrt(y₂ - y₁)²
sqrt((5 - (-3))² + sqrt(-8 - 4)²
sqrt(8)² + sqrt(-12)²
distance = 14.4222
midpoint:
(1, -2)