A. The expression to represent the elevation of city D is 1/2 × 12.
B. Solving the expression, 1/2 × 12 = 6 ft the elevation of city D is positive because the elevation of city D is above sea level.
The elevation of city A is 60 ft above sea level .
The elevation of city C is 12 ft above sea level.
The elevation of city D is 1 /2 of the elevation of city C. Therefore, the elevation of city D above sea level will be
A.
The expression to represent the elevation in feet of city D is as follows:
B.
Let's solve the expression below:
The answer is positive because the elevation of city D is above see level.
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Answer:
Choice C)
x^2 - 2x + 4 - 12/(x+2)
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Explanation:
To see how I got that answer, I have provided two attached images below. One of them shows the polynomial long division. The other shows synthetic division. Both are valid options to get to the same answer.
For each method, I used 1x^3 + 0x^2 + 0x - 4 in place of x^3 - 4 so that the proper terms could align.
Answer:
Elizabeth spent 17.5 hours and her sister spent 12.5 hours.
Step-by-step explanation:
Let x be the number of hours that Elizabeth shoveled and y be the number of hours that her sister shoveled.
Number of hours they shoveled = 30
So, x + y = 30 or
y = 30 - x
Jenna charged $12 per sidewalk.
So, her total earnings = 12x
Her sister charged $11 per sidewalk.
So, her total earnings = 11y.
Their total income = $347.50.
So, 12x + 11y = 347.5
Substitute y = 30 - x,
12x + 11(30 - x) = 347.5
12x + 330 - 11x = 347.5
x + 330 = 347.5
x = 347.5 - 330
x = 17.5 and
y = 30 - x = 30 - 17.5 = 12.5.
Hence, Elizabeth spent 17.5 hours and her sister spent 12.5 hours.
-2z^2+5z-5; Quadratic trinomial, 3 terms