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
n200080 [17]
3 years ago
11

I need help on this problem plz I need help

Mathematics
1 answer:
Annette [7]3 years ago
4 0

Answer:

The number is 35

Step-by-step explanation:

Let x be the number

1/5 x + 3x

=

2x + 42                 Break the question into phrases and solve 1 phrase at a time.

1/5 = 0.2

0.2x + 3x = 2x + 42              Combine the left

3.2x = 2x + 42                       Subtract 2x from both sides

3.2x - 2x = 42                        Combine

1.2x = 42                                Divide by 1.2

x = 42/1.2

x = 35

You might be interested in
The scale on the architectural plans for a new house is 1 in. equals 4 ft. Find the length and width (in ft) of a room that meas
Kobotan [32]

Answer:

length:24 ft and Width:36 ft

Step-by-step explanation:

multiply 4 and 6 to get the length then multiply 4 and 9 to get the width

5 0
3 years ago
In the xy coordinate plane, the slope of a line is 4 and it passes through the point (1, 3). Find the equation of a line that is
igor_vitrenko [27]

Answer: Y=-1 or Y=-1+4

Step-by-step explanation:

<h3>Use the formula y2- y1 over x2-x1 so it should look like this 1-3 over 3-1 which is -2 over 2 then you divide that which is -1 and if you have to find one all you have to do is use one point label which is x and y so I pick (1,3) so you put 3=-1(1) once you have that you multipy so -1 times 1 is -1 so your gonna add 1 to the -1 and the three the -1 cancel out because it is a zero pair 3+1 is 4 so B=4 </h3>
5 0
3 years ago
Which of these sets of ordered pairs below does not represent a function?
Step2247 [10]

Answer:

0,0

Step-by-step explanation:

The function set is empty

7 0
3 years ago
Emma's final grade in her math class is the average (mean) of her 5 chapter tests she took throughout the year. If she received
NikAS [45]

Answer:

Step-by-step explanation:

The mean (or average) of a set of numbers can be found with the following formula:

Mean = \frac{A_{1} + A_{2} + ... + A_{N}}{N}

For this problem, we have five numbers, so we add them together and divide by 5:

Mean = \frac{92 + 85 + 78 + 97 + 88}{5}

Mean = \frac{440}{5}

Mean = 88

8 0
3 years ago
Read 2 more answers
Anybody know how to work on decay rate? I'll give brainliest. THIS IS DUE SOON SO PLEASE HELP
artcher [175]

Answer:

28%

Step-by-step explanation:

In the function the .72 means that each unit of time 72% of the value is retained. This means that 28% percent of the value is lost or decays because 1-0.72=0.28 or 28 percent.

3 0
3 years ago
Other questions:
  • What is the expression for the “sum of 8 times a number and two”?
    9·2 answers
  • What are the intercepts of the line 2x + 4y = 12?
    5·2 answers
  • What is the formula for the following arithmetic sequence? 12, 6, 0, -6, ...
    9·2 answers
  • Does anyone know or understand this
    12·2 answers
  • How many times does 3 go into 249?
    9·2 answers
  • Boxes that are 12 inches tall are being stacked next to boxes that are 18 inches tall. What is the shortest height qt which the
    5·1 answer
  • Question 14 (2 points)<br> Compute: 2(8) + 5(6) =<br> O 12
    8·1 answer
  • HELP, PLEASE???? ASAP!!??
    11·1 answer
  • How do you work out the size of angle x ?
    10·2 answers
  • Use the method of disk or washer to set up, but do not evaluate, an integral for a volume of the solid obtained by rotating the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!