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
sergejj [24]
3 years ago
9

The sum of three numbers is 107 . The first number is 8 less than the third . The second number is 3 times the third . What are

the numbers ?
Mathematics
2 answers:
tresset_1 [31]3 years ago
7 0
First number = x
Third number = x - 7
Second number = 2(x - 7)
x + 2(x - 7) + x - 7 = 107
x + 2x - 14 + x - 7 = 107
Collect like terms.
4x - 21 = 107
4x = 128
x = 32
First number = 32
Second number = 50
Third number = 25
Total = 107.
Elza [17]3 years ago
3 0

Answer:

(x - 8) + 3x + x = 107

x - 8 + 3x + x = 107

5x - 8 = 107

5x = 115

x = 23, SO...

The first number is 23-8, which is 15

The second number is 3 x 23, which is 69

The third number is 23

15 + 69 + 23 = 107 CHECK!

Step-by-step explanation:

You might be interested in
nancy spent 7/8 hour working out at the gym she spent 5/7 of that time lifting weights what fraction of an hour did sje spentld
Juli2301 [7.4K]

\frac{9}{56}\\ Fraction of hour was spent by NAncy in lifting weights

Step-by-step explanation:

Time spent at the gym by Nancy = \frac{7}{8}\,hour

Time spent at lifting weights =  \frac{5}{7}\,hour

What fraction of hour she spent in lifting weights?

Solving:

Fraction of hour she spent in lifting weights= Time spend at the gym-Time spent at lifting weights

Fraction of hour she spent in lifting weights=\frac{7}{8}\,hour-\frac{5}{7}\,hour

=\frac{49}{56}-\frac{40}{56}\\=\frac{49-40}{56}\\=\frac{9}{56}\\

So, \frac{9}{56}\\ Fraction of hour was spent by Nancy in lifting weights

Keywords: Word Problems involving Fractions

Learn more about Word Problems involving Fractions at:

  • brainly.com/question/1648978
  • brainly.com/question/1677114
  • brainly.com/question/605571

#learnwithBrainly

7 0
2 years ago
Find the missing value.
Flauer [41]
It is six

because 6-2=4
8 0
2 years ago
3(2x - 4) + x = 9<br> help with homework
natita [175]

6x - 12 + x = 9

6x + x - 12 = 9

Collect like terms

7x - 12 = 9

Add both sides 12

7x - 12 + 12 = 9 + 12

7x = 21

Divide both sides by 7

7x ÷ 7 = 21 ÷ 7

x = 3

7 0
2 years ago
Read 2 more answers
A square has a perimeter of 18cm. How long is the side of the square?<br> 15 POINTS**
emmainna [20.7K]

Answer:

Each side is 4.5 cm

Step-by-step explanation:

18 \div 4 = 4.5

To find the perimeter of a square you add all the sides.

But to find the side length you do the opposite. Which is the equation above.

Hope this helps : )

5 0
2 years ago
Help please: A bus and a train leave a station at the same time, t = 0. The graph shows the bus's distance to the next station o
Nonamiya [84]

Answer:

y = (5/2)x + 20

Step-by-step explanation:

Since the bus and train are both at the station at time 0, the y-intercept for the new equation is 20. That is one point on the new graph: (0,20) The question said that the train travels faster, that means it spends less time getting to the next station. The existing graph shows the bus got to the next station in 10 minutes, so maybe the train got there in 8 minutes. So another point on the graph is (8,0) We can use a slope formula to calculate the slope of a new line. Or just count squares on the graph (se image) to find the slope. Slope tells how steep a line is, whether the line is going up or down, but also the slope is like directions how to get from one point to another point on the line.

All you need to write an equation is the slope, m and the y-intercept, b and fill those two numbers into the formula y=mx+b Here slope is 5/2 and y-intercept is 20. So you get

y=(5/2)x +20

5 0
2 years ago
Other questions:
  • What is the solution to the system of equations graphed below?
    8·2 answers
  • What is the volume of the solid?
    8·1 answer
  • rhonda had a piece of ribbon that was 5 feet 3 inches long she removed a 5-inch piece to us in her art project what is the lengt
    12·2 answers
  • Molly is painting a model house and needs to know how much paint she will need. She knows the surface area of the prism is 216 s
    9·2 answers
  • Someone please help on this
    12·1 answer
  • (a) Write 389% as a decimal.<br> (b) Write 0.005 as a percentage.
    14·1 answer
  • Leah Phil and cam collect a total of $200.30 for a holiday from Grazer will collect $12.80 more than Leah Chemical X 3 times as
    10·1 answer
  • What is the area of the triangle?
    11·2 answers
  • Write an equation for the nth term of the arithmetic sequence. Then find a10.
    7·1 answer
  • Please help this is due today!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!