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
fgiga [73]
2 years ago
8

Solve

Mathematics
1 answer:
victus00 [196]2 years ago
3 0

Answer:

x=14 , y = 21

Step-by-step explanation:

y=x-7...............1

5x+2y=7......2

reset eqn .....2

2y=-5x+7

so; y=-x-7 ×5

2y=-5x+7 ×1

5y = -5x -35

2y = -5x +7

5y-2y = -5 + 5 -35-7

<u>3y</u> = - <u>42</u>

3 3

y = 14

sub y=14 into eqn ...........1

y = -x -7

14 = - x -7

14 +7 = - x

-21 = x

x = 14 , y =-21

You might be interested in
14 sandwiches and 3 drinks cost €33.75. 6 sandwiches and 17 drinks cost €26.25 . How much cost 1 sandwich and 1 drink
Soloha48 [4]
Easy!! 1 sandwich and 1 drink costs 3.47
8 0
3 years ago
Determine if the statement below is always true, sometimes true, or never true. When x is a
andrew11 [14]

Answer:

Sometimes

Step-by-step explanation:

When x is a nonzero integer, then x can be

  • negative;
  • positive.

If x is negative, then -3x is positive (multiplying negative number by -3 you get positive number).

If x is positive, then -3x is negative (multiplying positive number by -3 you get negative number).

So, the statement "When x is a nonzero integer, the quantity -3x will be negative" is sometimes true.

7 0
4 years ago
Dwayne has $80 to spend on video games . used video games cost $10 each , and new video games cost 20 each. What equation in sta
Gwar [14]

Answer:

The answer is 80>or=10x+20y

5 0
3 years ago
Read 2 more answers
Which words in the sentence are the complete noun clause?
Sliva [168]
D
fgfjyngjghggggggggggggg

4 0
4 years ago
How do you Graph 0.5x+0.8y=240
Schach [20]

Answer:

y= 300 - 5/9x

Step-by-step explanation:

0.8y = 240 - 0.5x

divide both sides by 0.8,

y= 300 - 5/9x

-5/9 is your gradient

300 is your y-intercept

3 0
3 years ago
Other questions:
  • before sales tax,the classical music CD cost $15.Jan gave the clerk a $20 bill and recieved $4.17 change.what is the rate of sal
    12·1 answer
  • Pls, help me I don't understand! Very urgent!!!! (I have an attachment so you know what the problem looks like)
    5·1 answer
  • We usually get 25 homework problems each night, but the number of problems was decreased by 3. How many homework problems do we
    11·2 answers
  • Write -7/10 as a decimal.
    10·1 answer
  • PLEASE HELP ME AND PLEASE BE CORRECT
    5·2 answers
  • Find the measure of angel 3
    12·1 answer
  • A wall clock is generally a more precise tool for measuring a length of time than a stopwatch.
    6·1 answer
  • 4.23m 4.27m 3.98m his longest jump was how much longer compared to his shortest jump
    9·2 answers
  • 8. Find the GCF of *<br> 40x3 and 50x2
    8·2 answers
  • i need you to explain your answer and show your work for me to have all 5 points! thank you so much and i hope you have a great
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!