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marishachu [46]
3 years ago
13

Define the proportional relationship between two quantities. If lemons and lemonade cups are in proportion how many lemons will

be needed to make 15 cups of lemonade if 2 lemons make 4 cups of lemonade?
Mathematics
1 answer:
PtichkaEL [24]3 years ago
7 0
7 and 1/2 Lemons are needed to make 15 cups
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A computer online service charges one hourly rate for regular use but a higher hourly rate for designated "premium" areas. One c
N76 [4]

Answer: the service charge per hour for premium services is $5.5

the service charge per hour for regular services is $3

Step-by-step explanation:

Let x represent the service charge per hour for premium services.

Let y represent the service charge per hour for regular services.

One customer was charged $38 after spending 2 h in premium areas and 9 regular hours. It means that

2x + 9y = 38- - - - - - - - - - - 1

Another customer spent 3 h in premium areas and 6 regular hours and was charged $34.50. It means that

3x + 6y = 34.5- - - - - - - - - - -2

We would eliminate x by multiplying equation 1 by 3 and equation 2 by 2. It becomes

6x + 27y = 114

6x + 12y = 69

Subtracting, it becomes

15y = 45

y = 45/15

y = 3

Substituting y = 3 into equation 1, it becomes

2x + 9 × 3 = 38

2x + 27 = 38

2x = 38 - 27 = 11

x = 11/2 = 5.5

8 0
3 years ago
Thanks in advance :)
scoundrel [369]
The answer is -4 because -4^7=-16384
3 0
3 years ago
Can someone find x for these questions
Maurinko [17]

Answer:

8, 36, -12

Step-by-step explanation:

Q2

41 = 8x - 23

8x = 41 + 23

8x = 64

x = 8

Q4

11 = x/2 - 7

22 = x - 14

22 + 14 = x

x = 36

Q6

3(x - 8) = -60

x - 8 = -20

x = -12

8 0
3 years ago
All real cube roots of 27
Delvig [45]
The answer is 3, since 3*3*3 equals 27
6 0
3 years ago
What is the slope of the line y=3x-5
xeze [42]

Answer:

The y intercept and the slope are given in the equation. y=mx+b is slope-intercept form. mx is the slope and b is the y intercept. so in y=3x-5, 3x is the slope and -5 is the y intercept (what y is when x is zero).

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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