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
Yanka [14]
2 years ago
12

Solve by substitution 3x - 5y = -1 , x-y = -1

Mathematics
1 answer:
nevsk [136]2 years ago
6 0

Answer:

(-2, -1)

Step-by-step explanation:

first you must reorganize the equations so that one of them has x or y equaling to something

x - y = -1 --> x = y - 1

then substitute that in for x

3(y - 1) - 5y = -1

and solve for y

3y - 3 - 5y = -1

-2y = 2

y is -1

then plug it back in to an equation to find x

x + 1 = -1

x is -2

You might be interested in
What is 35 x 1850000000000
Julli [10]
64750000000000 (10 zeros in case i typed the wrong amount)
4 0
3 years ago
Read 2 more answers
The height of the water in a tank decreased 3 inches each week due to evaporation. What is the change in the height of the water
Temka [501]
If each week the tank decreased by 3 inches, in 2 weeks it would be 6 in, 3 weeks is 9 in, 4 weeks would be 12 in, and 5 weeks would be 15 in.
8 0
3 years ago
2d + 7 = 9<br><br>please help me!<br><br><br><br> ​
jasenka [17]

Answer:

d=1

Step-by-step explanation:

8 0
3 years ago
A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume 320π of cubic feet. What is the
8090 [49]
To solve for radius use the volume formula and solve for r.

V = πr²h
320π = πr²(20)
320π/π = 20r²
320 = 20r²
320/20 = r²
16 = r²
√16 = r
4 = r

Answer is D. 4 feet.

Hope this helps :)

7 0
3 years ago
Read 2 more answers
I think the answer is c can someone check me
Katen [24]

Answer:

D

Step-by-step explanation:

you first have to find the domain by finding where the expression is defined

so the answer would be x>5

6 0
3 years ago
Other questions:
  • What is 1 plus 6 mines 2 plus 5
    15·2 answers
  • If Jesse wants to buy a $75,000 10-year term life insurance policy, and the annual premium rate (per $1000 of face value) for hi
    8·2 answers
  • The graph below illustrates the linear function of how the total amount that a landscaper charges for a job changes depending on
    6·1 answer
  • Solve the equation. 3/4x+3-2x = -1/4+1/2x+5​
    13·1 answer
  • Need help please :) I've done the steps for how I thought I should solve this, but at the end I got stuck.
    14·1 answer
  • If 4 boxes of apples weigh 75.6 lb, how much do 8.5 boxes of apples weigh?
    12·1 answer
  • What is the equivalent to (-2a^-3b^6)^3 (2a^2b)
    10·1 answer
  • There is a few questions but im stuck on this one. please help
    15·1 answer
  • When heated and metal barn creases in line from 1.25 m to 1.262 m calculate percentage increase the correct one decimal place. C
    5·1 answer
  • ……………………………………………..()1!-!/
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!