1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Makovka662 [10]
3 years ago
11

Rocco has a weekly reading schedule, reading for 4.5 hours per day on some days and 3.5 hours per day on the other days. He read

s a total of 25.5 hours in a seven-day week. On how many days does he read for 4.5 hours?
Mathematics
1 answer:
AleksAgata [21]3 years ago
4 0

Answer:

x = days he reads for 4.5 hours = 1 day

y = days he reads for 3.5 hours = 6 days

Step-by-step explanation:

Let

x = days he reads for 4.5 hours

y = days he reads for 3.5 hours

x + y = 7 (1)

4.5x + 3.5y = 25.5 (2)

From (1)

x = 7 - y

Substitute x = 7 - y into (2)

4.5x + 3.5y = 25.5 (2)

4.5(7 - y) + 3.5y = 25.5

31.5 - 4.5y + 3.5y = 25.5

- 4.5y + 3.5y = 25.5 - 31.5

-y = -6

y = 6

Substitute y = 6 into (1)

x + y = 7 (1)

x + 6 = 7

x = 7 - 6

x = 1

x = days he reads for 4.5 hours = 1 day

y = days he reads for 3.5 hours = 6 days

You might be interested in
The room and the hallway shown in the floor plan below have different dimension but the same area. Find value of w.
nordsb [41]
Check the picture below

if their areas are equal then A =A or
(3w)(w-2) = (w+1)(w)

solve for "w"

7 0
2 years ago
A scale model of a human heart is 196 inches long. The scale is 32 to 1. How many inches long is the actual heart? Round your an
Svet_ta [14]
If the scale is 32 to 1, that means it is 32 times bigger than the actual thing. So if the model is 196 inches long, then the actual heart is 196/32 inches long. This equals 6.125.

Answer, rounded to the nearest whole number: 6 inches.
3 0
3 years ago
What is the solution to the system of equations below?
lisov135 [29]
Its either -1,2 or 1,2
5 0
2 years ago
The sum of 5 and the twice a number is at most 27
melamori03 [73]

Answer:

Step-by-step explanation:

let the number=x

5+2x≤27

2x≤25-5

2x≤20

x≤4

6 0
3 years ago
‼️WILL LIST BRAINLIEST ‼️Racheal drank 215 of a pitcher of lemonade. Kurstyn drank 1/4 of the lemonade. What fraction of the lem
Snezhnost [94]

Answer: the answer is D

Step-by-step explanation:

To find the answer you have to change both of the denominators to be the same and then you can add across

8 0
3 years ago
Other questions:
  • The __[_blank_]__ of two sets A and B is the set of elements that are present in A, in B, or in both A and B.
    10·1 answer
  • What is 7-3x=2x+7-5x
    9·1 answer
  • How do you round the numbers 33 and 89 to estimate there sum
    5·1 answer
  • What is the area of a circle with 11m and 9m?
    14·1 answer
  • Can someone help me please with this one problem
    7·1 answer
  • Find the common ratior r for the geometric sequence and use r to find
    12·2 answers
  • In which number is the place value of 5 equal to one tenth of the place value of the 5 in 6.85
    9·2 answers
  • Plz help I need by tonight
    10·1 answer
  • A student finds a positive correlation between the number of beds in a home and the number of plates in the kitchen.
    12·2 answers
  • I need an explanation and an answer please.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!