Answer:
Her hourly earnings are 6.90
Step-by-step explanation:
You can create two equations.
"<span>A car travels 20 mph slower in a bad rain storm than in sunny weather."
</span>
![\sf x-20=y](https://tex.z-dn.net/?f=%5Csf%20x-20%3Dy)
Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.
"<span>The car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather."
![\sf 2x=3y](https://tex.z-dn.net/?f=%5Csf%202x%3D3y)
</span>Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.
We want to find the speed of the car in sunny weather, or 'x'. Plug in the value for 'y' in the first equation into the second equation.
![\sf \boxed{\sf x-20}=y](https://tex.z-dn.net/?f=%5Csf%20%5Cboxed%7B%5Csf%20x-20%7D%3Dy)
![\sf 2x=3y\rightarrow2x=3(x-20)](https://tex.z-dn.net/?f=%5Csf%202x%3D3y%5Crightarrow2x%3D3%28x-20%29)
Distribute:
![\sf 2x=3x-60](https://tex.z-dn.net/?f=%5Csf%202x%3D3x-60)
Subtract 3x to both sides:
![\sf -x=-60](https://tex.z-dn.net/?f=%5Csf%20-x%3D-60)
Divide -1 to both sides:
![\sf x=60](https://tex.z-dn.net/?f=%5Csf%20x%3D60)
So the car goes 60 mph in sunny weather.
It's a 1x2x3 box, aka parallelepiped. So we have 2 1x2 faces, 2 2x3 faces and 2 1x3 faces. We add them up:
A = 2(1 × 2 + 2 × 3 + 1 × 3) = 2(2+6+3) = 22
Answer: d. 22
Answer: 550, 700
Step-by-step explanation: We just add.
150,700
+ 400,000
_________
550, 700
Hope that helps!