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
VikaD [51]
3 years ago
13

How many solutions will the following system of linear equations have?

Mathematics
1 answer:
devlian [24]3 years ago
8 0
For the answer to the question above, 
2x + 4y = –7 (1)
y = -1/2x + 5 (2)
Putting (2) into (1), we have:
-2x + 4(-1/2x + 5) = -7
-2x - 2x + 5 = -7
-4x = -7 - 5 = -12
x = -12/-4 = 3
y = -1/2(3) + 5 = -3/2 + 5 = 7/2
Therefore there is only one solution
I hoipe my answer helped you. Feel free to ask more questions. Have a nice day!
You might be interested in
Why is coal a non-renewable energy source​
Ratling [72]
1. It is extracted from the ground.
2. It took years to form.
5 0
2 years ago
Factor completely.
Serga [27]
Factor the polynomial:

4u² – 20u + 25

Rewrite – 20u as – 10u – 10u, and then factor it by grouping:

= 4u² – 10u – 10u + 25

= 2u * (2u – 5) – 5 * (2u – 5)

= (2u – 5) * (2u – 5)

= (2u – 5)² <––– this is the answer.

I hope this helps. =)
5 0
3 years ago
Use an area model to show the product of 8x2.23 write your answer in standard form answer
mixas84 [53]

Answer:

17.84

Step-by-step explanation:

2.23

    8 x

-----------

17.84

4 0
3 years ago
Read 2 more answers
Leroy's total job benefits were $50,150 last year. His total job expenses for traveling and for professional developement for th
kykrilka [37]

Answer:

A. $46,650

Step-by-step explanation:

Taking the first number of $50,150, we have to subtract his expenses. After subtracting Leroy's expenses, we get $46,650.

  50150

<u>-    3500</u>

  46650

7 0
3 years ago
Read 2 more answers
Find the value of the trigonometric ratio, tan X.
MariettaO [177]

Answer:

A. 24/7

<u>What are sine, cosine, and tangent?</u>

SOH - CAH - TOA

sine = opposite/hypotenuse

cosine = adjacent/hypotenuse

tangent = opposite/adjacent (that is not hypotenuse)

Step-by-step explanation:

tanX = ZY/XY = 48/14 = 24/7

5 0
3 years ago
Read 2 more answers
Other questions:
  • A parallelogram has a base of 7 inches and a height of 11 inches. What is the area?
    11·1 answer
  • what is the equation, in slope-intercept form, of the line that is perpendicular to the line y – 4 = –(x – 6) and passes through
    7·1 answer
  • What is the value of (-1/4 - 1/2) divided by (-4/7) ?
    11·2 answers
  • What is another name for the set of natural numbers.
    6·1 answer
  • Which of the following graphs best represents the solution to the pair of equations below?
    5·1 answer
  • Which statement is NOT true about ways to pay for college?
    7·1 answer
  • Which number represents the opposite of -25
    11·1 answer
  • If the mean of 25, 28, a, 30 and 32 is 27, then find the value of a.
    10·1 answer
  • Picture says it all, I need help ASAP!
    15·1 answer
  • Question 6 of 10
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!