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sukhopar [10]
3 years ago
7

Linear equations word problems

Mathematics
1 answer:
damaskus [11]3 years ago
5 0
Drinks, x
popcorn, y
 9x + 4y = 40.50
 3x + 5y = 38.25

Multiply the 2nd row by 3
9x+4y=40.50
9x+15y=114.75
Subtract the 2nd row from the 1st row
−11y=−74.25
Solve for y

Substitute y
9x+4(6.75)=40.50
9x+27=40.50
Subtract 27 from both sides
9x=40.50−27
9x=13.5
Divide both sides by 9

I'll let you do some of the work ;)

Hope this helps
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the area of a parallelogram os 150 square meters the height of the parallelogram is 15 meters what is the length of the parallel
lys-0071 [83]
The length is 10 meters.

150 divided by 15 is 10.

Hope this helps!
3 0
4 years ago
Can someone help me with this ​
Nataly_w [17]

Answer:

  b, e

Step-by-step explanation:

a, b) ordinarily, we claim the variable on the vertical axis is a function of the variable on the horizontal axis. By that claim, <em>temperature is a function of time</em>.

If the graph passed the horizontal line test (a horizontal line intersects in one place), then we could also say time is a function of temperature. The graph does not pass that test, so we cannot make that claim.

c) The graph has negative slope between 4:00 and 5:00. Temperature is decreasing in that interval, not increasing.

d) The graph has two intervals in which it is horizontal: 5:00-9:00 and 11:00-12:00. In those intervals it is neither increasing nor decreasing.

e) The graph shows a minimum in the interval 11:00-12:00. <em>The lowest temperature first occurs at 11:00</em>.

6 0
3 years ago
To rent a uhal truck for the day, it cost 20 dollars per day plus 1 dollar for every mile driven Write an algebraic expression t
valkas [14]

Answer:

The equation is R = 20d + m(1)

Where R is the rental amount in dollars, d is the number of days and m is the number of miles driven

R for 3 days and 1000 miles is $1,060

Step-by-step explanation:

To properly represent the algebraic expression, we need to assign some variables.

Now, let the rental amount be R, the number of miles driven be m and the number of days rented for is d

Thus, we can say that:

R = 20d+ m(1)

Where R is rental amount, m is the number of miles driven and d is the number of days for which the truck was driven.

Now we are asked to calculate rental amount for 3 days and 1000 miles.

R = 20d + m(1)

R = 20(3) + 1000(1)

R = 60 + 1000

R = $1,060

5 0
4 years ago
Please help me with this​
irinina [24]

Answer:

I don't know if it's two separate questions so I did two

5 0
3 years ago
-7 + (-9) - (-11) -2
Tju [1.3M]
The answer is -7, please give brainliest.
3 0
3 years ago
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