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
Rashid [163]
3 years ago
10

!! How could it be s

Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0

The solution to the system of equations are (2, 5).

Solution:

The system of equations are

x + y = 7 – – – – (1)

2x – y = –1 – – – – (2)

To find x from equation (1):

x + y = 7

Subtract y from both sides of the equation, we get

⇒ x + y – y = 7 – y

⇒ x = 7 – y – – – (3)

Substitute (3) in (2) we get,

2(7 – y) – y = –1

14 – 2y – y = –1

14 – 3y = –1

Subtract 14 from both sides,

–3y = –15

Divide by –5 on both sides,

y = 5

Substitute y = 5 in equation (3)

x = 7 – 5

x = 2

The solution to the system of equations are (2, 5).

You might be interested in
Paula is going to choose the size, color, phrase, and picture for a birthday card for her friend. There are 222 sizes, 444 color
Llana [10]

Answer:

If you're looking for the number of options shed have, it would 8501,194,296, i think. Hope this helps!

Step-by-step explanation:

3 0
3 years ago
I put B but it said it was wrong???
zavuch27 [327]
It should be A. Not B
8 0
3 years ago
Solve for x. 16x - 5 = 18x - 2  and Solve for x.<br><br>13x + 7 = 5x - 20
Naily [24]
The answer to the question

7 0
3 years ago
Eight more than the quotient of thirty and a number is fourteen.
vaieri [72.5K]

Answer:

The number is 5

Step-by-step explanation:

First, we turn words into an equation(using x as the unknown number). Then, we solve for x.

\frac{30}{x} +8=14\\\frac{30}{x}=6\\30=6x\\5=x

4 0
3 years ago
Please help me out!! Solve the equation. y-6/y=5<br> A.y=1,5<br> B.y=-9,1<br> C.y=2,3<br> D.y=-1,6
geniusboy [140]
Answer: y = -1, y = 6 (choice D)

===========================================================

Work Shown:

y - (6/y) = 5
y*(y - (6/y)) = y*5 <<--- see note 1 below
y^2 - 6 = 5y
y^2 - 5y - 6 = 0
(y+1)(y-6) = 0 <<--- see note 2 below
y+1 = 0 or y-6 = 0
y = -1 or y = 6 which are the two answers

note 1: I multiplied both sides by y to clear out the fraction (the LCD is y)

note 2: I factored the left side by asking myself "what two numbers multiply to -6 and add to +5?" the answer to that question is +1 and -6 which helps lead to the factorization. An alternative route instead factoring is to use the quadratic formula

5 0
3 years ago
Read 2 more answers
Other questions:
  • find point p that divides segment AB into a 2:3 ratio. The point should be closer to A. A(-3,1) and B(3,5)
    12·1 answer
  • every sixth visitor to an animal shelter gets a free animal calendar every twentieth visitor gets a free animal toy. Which visit
    14·1 answer
  • Galina had two boxes with pieces of paper in each. In the first box, each piece of paper had one possible outcome from flipping
    5·1 answer
  • 15 cars. enter the mall every 5 minutes. how many cars enter in 2 minutes
    15·2 answers
  • Im new to this app can someone help me please and thank u so much
    6·1 answer
  • A square has<br> side<br> lengths of 3/4 in.<br> What is its area?
    11·2 answers
  • Carmen drove 864 miles in 12 hours.
    12·2 answers
  • Need help will give brainlist
    15·2 answers
  • Can someone please help with these two questions please?
    12·1 answer
  • No link or bot answer right
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!