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
NeTakaya
2 years ago
12

5 times marys age is the same as 28 less than 7 times her age. Find her age

Mathematics
2 answers:
OleMash [197]2 years ago
7 0

Answer:

14yrs

Step-by-step explanation:

Mary’s age=x

5•x = x•7-28

=> 5x-7x= -28

=> -2x= -28

=> x= -28/-2

=> x= 14

Gnom [1K]2 years ago
3 0

setup a simple algebraic equation and solve.

5x = 7x-28

-5x   -5x

0=2x-28

+28  +28

28=2x

Now divide both sides by 2 and you get that she is 14

You might be interested in
Find the angle which is equal to its supplement. ​
vesna_86 [32]

Answer:

the angle which is equal to its supplement is 90 degree

8 0
2 years ago
A spinner is divided into five congruent sections, numbered 1 through 5. If the arrow on the spinner is spun, what is the probab
Snowcat [4.5K]
D.2/5 because 3/5 are odd so the remaining 2 are even so 2/5 are not odd!
6 0
3 years ago
the temperature of the water in Emily's fish tank was 78 degrees F on Sunday the water temperature was changed by -3 on Monday a
SpyIntel [72]

To solve this problem, let us analyze this step by step. The temperature for each day is as follows:

 

Water temperature on Sunday = 78 degrees F

Water temperature on Monday = changed by -3 degrees F

Water temperature on Tuesday = changed by 3 degrees F

 

We can see that the total change of water temperature from Sunday to Tuesday is:

-3 + 3 = 0

Therefore there is zero overall change. There the integer which represents the temperature change is “0”.

 

Since the overall change in water temperature is zero, hence the temperature on Sunday and on Tuesday is similar.

Water temperature on Tuesday = 78 degrees F

8 0
3 years ago
What is the domain of the following graph?
Morgarella [4.7K]

Answer:

[0,9]

Step-by-step explanation:

The domain is the first set of the ordered pair. When finding the domain you are supposed to find which x value it starts from to where it ends. The x value starts from 0 and ends and the 9th unit on the x-axis which would give us 0,9 now since both points are closed you would use these symbols [ ] to show that it is closed meaning the answer would be [0,9]

Note:

I'm sorry if this is wrong but this is what I believe the answer is.

4 0
2 years ago
25 POINTS!! PRE-ALGEBRA MATH! PLEASE HURRY! I WILL GIVE BRAINLIEST!
yan [13]

Answer: We are using a line regression tool to solve the parameters asked in the problem. We can use online tools or that of Excel. According to the tool, the best fit values are

Slope0.3848 ± 0.03956

Y-intercept0.6053 ± 0.6370

X-intercept-1.573

1/Slope2.598

Step-by-step explanation: Best fit lines make sure that the standard deviation at each point is minimum from the best fit line.

3 0
2 years ago
Read 2 more answers
Other questions:
  • Solve & Explain your Math thinking 12-7
    11·2 answers
  • What is equivalent to y=(x+3)2+53
    13·2 answers
  • The one about distibutive property?
    6·1 answer
  • Determine whether each table represents a linear quadratic or exponential function
    7·1 answer
  • Drag each tile to the correct box.
    14·1 answer
  • At 7 PM, the temperature outside was -5°C. What does |-5| represent in this situation?
    6·1 answer
  • Eighty and 15 hundredths in decimal notation
    9·1 answer
  • Could someone answer this for me?​
    11·1 answer
  • Which of the following lines has a negative slope?
    14·2 answers
  • Satellite dishes are shaped like parabolas to optimally revive signals. The cross section of a satellite dish can be modeled by
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!