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
Nadya [2.5K]
3 years ago
13

How do you solve this system by elimination?

Mathematics
1 answer:
zimovet [89]3 years ago
8 0
(-5x+7y=11) - (-5x+3y=19) =
4y = -8. (divide both sides by 4)

y = -2

Substitute

-5x + 7(-2) =11
-5x - 14 =11
-5x = 25

x = -5



y = -2 and x = -5
You might be interested in
Completely factor 9x-3xy
OleMash [197]

9x-3xy

Factor out 3x from both terms.

3x(3-y)

answer: 3x(3-y)

4 0
3 years ago
Read 2 more answers
The population at Bishop High School is 2000 students in 2011. Every year the population decreases by 50 students
Artemon [7]

Answer:

  • Let p be the population at t be the number of years since 2011.  Then, p=2000-50t
  • The projected population of the high school in 2015=1800
  • In <u>2019</u> the population be 1600 students

Step-by-step explanation:

Given: The population at Bishop High School students in 2011 =2000

Also,  Every year the population decreases by 50 students which implies the rate of decrease in population is constant.

So, the function is a linear function.

Let p be the population at t be the number of years since 2011.

Then, p=2000-50t

So at t=0, p=2000

In year 2015, t=4, substitute t=4 in the above equation ,we get

p=2000-50(4)\\\Rightarrow\ p=2000-200\\\Rightarrow\ p=1800

Hence, the projected population of the high school in 2015=1800

Now, put p=1600 in the function , we get

1600=2000-50t\\\Rightarrow50t=2000-1600\\\Rightarrow50t=400\\\Rightarrow\ t=\frac{400}{50}\\\Rightarrow\ t=8

Now, 2011+8=2019

Hence, in <u>2019</u> the population be 1600 students




6 0
3 years ago
Solve for the angle denoted by the "?". Round to the nearest tenth. *
Tresset [83]

Answer:

Step-by-step explanation:

tanx=27/38

take the inverse...

tan^-1(27/38)

≈35.4 degrees

3 0
3 years ago
Thomas bought 4 shirts from a store. The price of each shirt was the same. After he bought the shirts, his account balance showe
ludmilkaskok [199]
$89.08 divided by 4 is $22.27, aka the price of one shirt
8 0
3 years ago
Read 2 more answers
A cylinder has a base diameter of 16 feet and a height of 19 feet. What is its volume in cubic feet, to the nearest tenths place
qaws [65]

Answer:

3820.18

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • A person 2.5 ft tall casts a shadow of 3 ft. How long is a shadow of a pole that is 6.7 ft tall?
    8·1 answer
  • A tipi that is shaped like a cone has a diameter of 12 ft. and a height of 15ft. What is the volume of the tipi? plese show work
    14·2 answers
  • What is the average rate of change between
    12·2 answers
  • Evaluate the following expression. Round your answer to two decimal places.
    8·1 answer
  • 50 POINTS! :D
    14·1 answer
  • Simplify the following expression as much as possible.<br> 4^10/4^10 x 7^O=?
    10·2 answers
  • 14 + 3х - 5 + 4х how do I solve ​
    6·2 answers
  • A flying squirrel's nest is 12 feet high in a tree. From its nest, the flying squirrel glides 20 feet to reach an acorn that is
    14·1 answer
  • What is 2/5 x 4 help me please
    9·2 answers
  • Can somebody help me with the question i asked before this.....please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!