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UkoKoshka [18]
3 years ago
7

T a linen sale Mrs. Earle bought twice as many pillowcases for $2 each as sheets for $5 each. If she spent less than $40, not in

cluding tax, what is the maximum number of pillowcases she could have purchased?
Mathematics
1 answer:
Anettt [7]3 years ago
3 0
For this case, the first thing we must do is define variables:
 x: number of pillowcases
 y: number of sheets
 We now write the system of equations:
 2x + 5y = 40
 x = 2y
 Solving the system we have:
 x = 8.9
 y = 4.4
 Answer:
 
The maximum number of pillowcases she could have purchased is:
 
x = 8 (spent less than $ 40)
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A student is running a 5-kilometer race. He runs 1 kilometer every 3 minutes. Select the function that describes his distance fr
Phantasy [73]
D = distance from finish line

D= 5 - 1/3x 

Distance from the finish line is equal to the distance of the start line from the finish line, minus one third of a km times the number of minutes hes been running.

using given variables; D= 5 - 1/3*3
D=5-3/3
D=5-1
D=4
7 0
3 years ago
Read 2 more answers
5x+11=-3x+35 i need help solve for x
vaieri [72.5K]

Answer:

x = 3

Step-by-step explanation:

Let's solve your equation step-by-step.

5x + 11 = -3x +35

Add 3x to both sides.

5x + 11 + 3x = -3x + 35 + 3x

8x + 11 = 35

Subtract 11 from both sides.

8x + 11 - 11 = 35 - 11

8x = 24

Divide both sides by 8.

\frac{8x}{8} = \frac{24}{8}

x = 3

So therefore, that is how you found your answer: x = 3


8 0
3 years ago
A survey was conducted to determine the popularity of three foods among students. The data collected from 75 students are summar
Andrews [41]

Answer:

20

Step-by-step explanation:

Total no = 75

N (P) = 48 , N (H) = 45 , N (T) = 58

N (P∩H) = 28 , N (H∩T) = 37 , N (P∩T) = 40

N (P∩H∩T) = 25

Total no = N (P) + N (H) + N (T) - N (P∩H)  -  N (H∩T) - N (P∩T) + N (P∩H∩T) + neither

75 = 48 + 45 + 58 - 28 - 37 - 40 + 25 + neither

75 = 71 + neither → neither = 4

N (only P) = N (P) - N (P∩H)  - N (P∩T)  + N (P∩H∩T) = 48 - 28 - 40 + 25 = 5

N (only H) = N (H) - N (P∩H) - N (H∩T) +  N (P∩H∩T) = 45 - 28 - 37 + 25 = 5

N (only T) = N (T) - N (H∩T) - N (P∩T) + N (P∩H∩T) = 58 - 37 - 40 + 25 = 6

So, total liking either one or neither = 4 + 5 + 5 + 6 = 20

4 0
3 years ago
Can someone please help me ​
mart [117]

Answer:

x = 25

Step-by-step explanation:

3x = 75

divide both sides by 3

x = 25

5 0
3 years ago
identify each polynomial as a perfect square trinomial, a difference of two squares, or neither. then factor the polynomial if i
lesya692 [45]
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Neither

6 0
3 years ago
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