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
Nadusha1986 [10]
2 years ago
14

Solve using the substitution method: 6x + y =15 4x + 3y = 31

Mathematics
1 answer:
Ksivusya [100]2 years ago
3 0

Answer:

the answers to this are x= 1 and y= 9

You might be interested in
Which pair shows equivalent expressions?
Dmitry_Shevchenko [17]

Which pair shows equivalent expressions?

A.2(2/5x + 2)=2 2/5x + 1

B.2(2/5x + 2)=4/5x + 4

C.2(2/5x + 4)=4/5x + 2

D.2(2/5x + 4)=2 2/5x + 8

Solution:

2(\frac{2}{5}x + 2)

Let us distribute 2 inside the parenthesis.

That is, we use distributive property:

a(b+c)=ab+ac

2(\frac{2}{5}x + 2) =\frac{2*2}{5}x+2*2

So, 2(\frac{2}{5}x + 2) =\frac{4}{5}x+4

Answer:Option (b)

2(\frac{2}{5}x+4)

Applying distributive property, a(b+c)=ab+ac

2(\frac{2}{5}x+4) =2*\frac{2}{5} x+2*4

2(\frac{2}{5}x+4) =\frac{2*2}{5} x+2*4

2(\frac{2}{5}x+4) =\frac{4}{5} x+8

So, Option (B) is correct.

8 0
3 years ago
Read 2 more answers
Max worked 13 hours last week at the grocery store and earned $94.25.If he only worked 5 hours this week, how much money did he
Marrrta [24]
ANSWER: $36.25

Explanation: First find the rate. Divide $94.25 by 13 (hours) to get the rate. Now you know that Max earns $7.25 each hour he works. Multiply his hourly rate by 5 (hours) to get how much Max earns in five hours.
6 0
3 years ago
Please help me (with explanation if possible)
nekit [7.7K]

Answer:

French=60,History=120,Music=108

Step-by-step explanation:

I think this is trying to represent the degrees of a pie chart.

To find the degree of the pi chart per person you need to 72/12=6

Than to find the amount of degrees per subject multiply 6*amount of students.

Example:

6 \times amoumt \: of \: students \:taking \: music = 6 \times 18 = 108

7 0
3 years ago
Read 2 more answers
Solve the conjunction and describe the solution set.
BaLLatris [955]
 -5 ≤ 3m + 1 < 4
- 1           - 1  - 1
 -6 ≤ 3m < 3
  3      3     3
 -2 ≤ m < 1

Solution Set: {m|-2 ≤ m < 1}, {m|m ≥ -2 and m < 1}, [-2, 1)

The answer is A.
7 0
3 years ago
Angela makes a pillow in the shape of a wedge to use for watching TV. The pillow is filled with 121212 feet^3 3 start superscrip
Dahasolnce [82]

Answer:

The question is incomplete, the complete question is Angela makes a pillow in the shape of a wedge to use for watching TV. The pillow is filled with 12 ft³ of fluffy material. The base is 3 ft, the height is 2 ft, what is the length of the pillow?

The length of the pillow is 4 feet

Step-by-step explanation:

The formula of the volume of the wedge is V=\frac{1}{2}bhl , where

  • b is the base of it
  • h is the height of it
  • l is the length of it

∵ The pillow in the shape of a wedge

∵ The pillow is filled with 12 ft³ of fluffy material

∴ The volume of the wedge = 12 ft³

∵ The base = 3 feet

∵ The height = 2 feet

- Use the formula of the volume above to find its length

∵ V=\frac{1}{2}(2)(3)l

∴ V = 3 l

∵ V = 12 ft³

- Equate 3 l by 12

∴ 3 l = 12

- Divide both sides by 3

∴ l = 4 feet

∴ The length of the pillow is 4 feet

8 0
3 years ago
Other questions:
  • Alex invested $400 in a CD that pays 3% simple interest, calculated semiannually. How much money will Alex earn in 2 years? A. $
    10·1 answer
  • Find a equation for the line, in point-slope form, that contains (5,1) and is perpendicular to 6x − 3y = 2.
    10·1 answer
  • Which of the following equations shows direct variations a) y= x/3 + 1 B) y= 3x c) Y=3/x
    9·1 answer
  • This year Colton earned 70,000 frequent flyer miles from his travels this year’s amount is 10 times as many miles as he earned l
    6·1 answer
  • Holly opened a savings account at a local bank. She deposited $2,800.00 into the account 5 years ago. If the account earns an an
    10·2 answers
  • A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is
    7·1 answer
  • ANSWER QUICK FOR BRANLIEST PLEASEEE There are 8 frosted donuts and 56 not frosted. What is the ration of frosted to total
    9·2 answers
  • Opposite = 1.5. <br><br>adjacent = 4. <br><br>find the acute angle​
    6·2 answers
  • HELP Two workers, if they were working together, could finish a certain job in 24 days. If one of the workers does the first hal
    10·1 answer
  • Your best friend is really struggling with their math class. You passed the same class last term with an A, so you’ve been helpi
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!