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
solniwko [45]
3 years ago
8

Y=-x-5 2x+y=5 substitution method

Mathematics
1 answer:
Mumz [18]3 years ago
5 0

Answer:

x = 10

y = -15

Step-by-step explanation:

putting value of y in equation 2

2x+(-x-5)=5

2x-x-5=5

x-5=5

x=5+5

x= 10

putting value of x in equation 1

y=-10-5

y= - 15

You might be interested in
Which is a completw sentence?
cestrela7 [59]
D. would be the right answer mate
6 0
3 years ago
The volume of this cylinder is 20,403.72 cubic yards. What is the radius? Use ​ ≈ 3.14 and round your answer to the nearest hund
MakcuM [25]
The formula for the volume of a cylinder is V=3.14r^2(h).
So substituting the volume: 20,403.72=3.14r^2(h).

To solve for ‘r’, divide both sides by 3.14h
r^2=6,498/h
Then find square root of both sides
r= sqrt(6,498/h)
Since ‘h’ is not specified here, it cannot be solved further.
4 0
2 years ago
If a boat depreciates in value according to the simple interest formula Y=20,000(.92)^2 find the rate of decay. Write as a perce
Alexandra [31]

Answer:

Rate of Decay = 8%

Step-by-step explanation:

The decay formula is:

F=P(1-r)^t

Where F is the final value (here, it is given as "Y")

P is the initial value (here, given as 20,000)

r is the rate of decay (what we need to find)

t is the time (given as 2)

Comparing both the equations:

F=P(1-r)^t\\Y=20,000(0.92)^2

We see that:

1 - r  =0.92

We solve for "r":

1 - 0.92 = r

0.08 = r

The rate of decay is 0.08, as a percentage, we need to multiply by 100, so we have:

0.08 * 100 = 8%

Rate of Decay = 8%

6 0
3 years ago
Does cold salty water sink or rise along the ocean floor as deep as a current​
rewona [7]

Answer:

In cold regions, such as the North Atlantic Ocean, ocean water loses heat to the atmosphere and becomes cold and dense. When ocean water freezes, forming sea ice, salt is left behind causing surrounding seawater to become saltier and denser. Dense-cold-salty water sinks to the ocean bottom.

Step-by-step explanation:

7 0
2 years ago
NEED HELP ASAP!!!!! WILL GIVE BRAINLIEST!!!!!!!
Mama L [17]
Maybe b or c I guess??
3 0
2 years ago
Read 2 more answers
Other questions:
  • A party size bag of tortilla normally coast 3.80. the supermarket has them on sale today for 2.25. what is the percentage of the
    9·1 answer
  • Please help, Find the Quotient, simplify your answer, Show your work
    6·1 answer
  • To approximate the length of a marsh, a surveyor walks x=420 meters from point A to point B,then turns 75 degrees and walks 220
    13·1 answer
  • How is the rate 4.5%
    10·1 answer
  • Ken has saved $120 in the bank account. Do the following situations leaves ken with a balance of $0
    12·1 answer
  • Fill in the blanks <br> will choose brain
    12·1 answer
  • tamara finds the sum of two number cubes rolled at the same time. the chart below shows all possible sums frim thr 36 possible c
    13·1 answer
  • +12=15 pls tell me it’s for a grade
    15·1 answer
  • Please help me with this question I really need help!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·1 answer
  • Which statements describe the key features of the graph of ? Check all that apply.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!