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gregori [183]
3 years ago
7

Randi earned a profit of $60.00 on her last snow shoveling and salting job. Write an equation that can be solved to find how man

y hours Randi spent shoveling and salting to earn a profit of $60.00. HINT: Randi charges $25 an hour to shovel and salt. She pays $3 for salt. It costs her $2 to replace a shovel. Profit for this job = $60.00
Write your answer in the form of an algebraic equation . You do not have to solve the equation, but you will need to use your equation to complete the next test question.
Mathematics
1 answer:
pishuonlain [190]3 years ago
4 0

Answer:

Step-by-step explanation:

$25x + $2 + $3

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What is the answer to this?​
kherson [118]

s = standard version amount

h = high quality version amount

we know that there were 1090 downloads of the song, meaning s + h = 1090.

we also know that the total amount of MBs downloaded was 3353 MBs, and since the standard is 2.1 MBs and the high quality is 4.9MBs, then 2.1s + 4.9h = 3353.

\begin{cases} s+h=1090\\ 2.1s + 4.9h = 3353\\[-0.5em] \hrulefill\\ h = 1090 - s \end{cases}\qquad \stackrel{\textit{substituting on the 2nd equation}}{2.1s+4.9(1090-s) = 3353} \\\\\\ 2.1s + 5341 - 4.9s = 3353\implies -2.8s + 5341 = 3353 \\\\\\ -2.8s=-1988\implies s = \cfrac{-1988}{-2.8}\implies \boxed{s = 710}

7 0
3 years ago
What is the perimeter of rhombus WXYZ?<br><br> units<br> 12 units<br> units<br> 20 units
timama [110]
Let O be the intersection of the vertical line through ZX, and the horizontal line through YW. 

The coordinates of this point are clearly (5, 2) as it is at the same x-coordinate as X and Z, and y-coordinate as Y and W.


So, YZO is a right triangle. By the Pythagorean theorem:

ZY= \sqrt{{YO}^2+{OZ}^2}= \sqrt{2^2+3^2}= \sqrt{4+9}= \sqrt{13}.


Since all sides of a rhombus are equal, then the perimeter is :

                               P(XWZY)=4 \sqrt{13} units.


Answer: third choice.

5 0
3 years ago
Which pair of expressions is equivalent using the Associative Property of Multiplication? (3 points)
Crazy boy [7]

Answer:

I think it will 4

hope it helps

6 0
3 years ago
What is 13.8924439894 rounded to the nearest tenth
gogolik [260]
1st decimal place=tenth
2nd=hundreth

to round, you look at the place after it
so 13.8924439894 to tenth
look untill hundreth
13.89
if hundreth<u>></u>5, round tenth up
if hundreth place<5 leave tenth as is

13.89
9<u>></u>5
round up
8+1=9
13.9 is to theh tenth
8 0
3 years ago
Read 2 more answers
For what value of r is the parallelogram a rhombus
Gre4nikov [31]

Answer:

9

Step-by-step explanation:

7r+18=r²

r²-7r-18=0

factorizing

r²+2r-9r-18=0

r(r+2)-9(r+2=0

(r-9)(r+2)=0

r-9=0

r=9

check

(r²)=(9*9)=81

7r+18=7(9) + 8=81

5 0
3 years ago
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