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
4vir4ik [10]
3 years ago
5

Solve the simultaneous equations -x + 5y = -7 x + y = – 5 x = 1 y= 0

Mathematics
2 answers:
vodomira [7]3 years ago
5 0

y= -5-x

-x + 5(-5-x) = -7

-x -25-5x =-7

-x-5x = 25 -7

-6x= 18

x = -3

-3 +y = -5

y= -5 +3

=-2

-(-3) + 5(-2)

3 - 10 = -7

olga_2 [115]3 years ago
4 0

Answer:

y= -2, x= -3

Step-by-step explanation:

Firstly, substitute the x and y values:

-x + 5(0)= -7

x+ 0 = -5

second thing to check: DSA - different signs addition (positive x and -x)

-x+5y=-7 take away x+y=-5

6y= -12

y= -2

To find x: -x + 5(-2)= -7

-x= -7 + 10

x= -3

You might be interested in
The workers at the help line answers 24 phone calls every 2hours how many phone calls do the workers answer in 8hours
Sliva [168]
Answer = 96
Explanation is 2(4) = 8 so 24(4) = 96
5 0
3 years ago
Read 2 more answers
Match the following equation to the correct situation.
ANTONII [103]

Answer:

A.  Last month's electricity bill was 5.4 kW-h less than 30% of this month's bill.

Step-by-step explanation:

The given expression is:

30\%(b-18)=30\%b-5.4

The above expression tells us that 30% is of the quantity 'b' and 5.4 is being subtracted from the result of the percentage.

Choice A:

If we consider the present month's bill as 'b'. Then 30% of present month's bill can be represented as 30% of b = 30%b.

Now, if the previous month's bill is 5.4 kW-h less than 30% of this month's bill, then this statement can be represented as:

Previous bill = 30% of Current bill - 5.4 = 30\%b-5.4

Hence, choice A justifies the given expression.

Choice B:

The expression for choice B could be number of songs available for download from 30% of  'b' artists is 30%b.

Choice C:

5.4 speeches doesn't make any sense.

Choice D:

5.4 less than 'b' bowls mean b-5.4. Now, 30% of this is 30%(b-5.4)=30%b-30%(5.4).

This is also not the correct expression.

Therefore, only choice A is the correct justification of the given expression.

4 0
3 years ago
Question 2 (1 point)
Nadusha1986 [10]
67 because complementary means they both will add up to 90 so you just subtract 90 minus 23 to get 67
6 0
3 years ago
Tyler needs at least $205 for a new video game system. He has already saved $30. he earn $7 an hour at his job. Write and solve
natima [27]
205<7x+30

x>/=25


I hope this was helpful
5 0
3 years ago
Write the equation of line in slope-intercept form:
Xelga [282]

Answer:

Step-by-step explanation:

y = -x + 3

y = -(x + 12)

y = -x - 12

7 0
3 years ago
Other questions:
  • Which is not an equation of the line going through (6, 7) and (2, –1)?
    9·1 answer
  • Jeremy is 5 years younger than his older sister. His older sister is 9 years older than his younger sister. The total of their a
    11·2 answers
  • A right angle intersects a line at point M.Which statement is true about angles 1 and 2They are congruent.
    13·1 answer
  • Which of the following polynomials is in standard form?
    10·2 answers
  • 00.00
    15·1 answer
  • Roberta wants to create 17 ounces of new hand lotion, with a minimum 15% concentration of beeswax, from a mixture of two lotions
    11·1 answer
  • John, Jack, and Jill have 159 marbles altogether. John has 2 more marbles than Jack, and if Jill gave 5 marbles to Jack, Jack wo
    7·1 answer
  • PLEASE ANSWERRRRRRRRRRRR
    5·1 answer
  • Need this worked out please so I can understand it
    7·1 answer
  • How many solutions does 6(4s+12)=8(3s-14) have?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!