8x + 9 = 42
8x +(9-9)=42-9
8x=33
8x/8=33/8
4.125oz
Answer:
the horizon is to inform that we are still here in a few days I have not what you mean about that language arts center for a while but not sure just asking for I don't have a
<h3>
Answer: 2</h3>
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Explanation:
x = number of years
y = height in feet
The equation for the first tree is
y = x+3
The slope is 1 to represent a rate of 1 ft per year of growth. The y intercept of 3 is the starting height. Refer to y = mx+b form.
For the second tree, the equation is:
y = 0.5x+4
This time we have a slope of 0.5 and a y intercept of 4.
Apply substitution to solve for x
y = x+3
0.5x+4 = x+3
0.5x-x = 3-4
-0.5x = -1
x = -1/(-0.5)
x = 2
The trees will be the same height in <u> 2 </u> years.
What will that height be? Plug x = 2 into either equation to find y. We should get the same y value.
y = x+3
y = 2+3
y = 5
Or we could say
y = 0.5x+4
y = 0.5*2+4
y = 1+4
y = 5
We've shown that both equations lead to y = 5 when x = 2. This means that at the 2 year mark, both trees are 5 feet tall. This helps confirm we have the correct x value.
Distance = Rate x time
Time = 4.5 hours
Rate = 70 miles per hour
Distance = 70 x 4.5 = 315 miles.
Answer:
The answer would be 12 cars washes for $100.
Step-by-step explanation:
The unit price for 12 cars washes for $100 would be a little over 8 dollars.
The unit price for 5 car washes for $47 would be a little over 9 dollars.
Hope this helps.
