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
kherson [118]
2 years ago
8

1. What is the solution of the system

Mathematics
1 answer:
sasho [114]2 years ago
8 0

Answer:

C

Step-by-step explanation:

3x-y=14

4x+y=21

add

7x=35

x=35/7=5

4×5+y=21

y=21-20=1

so (5,1 ) is the solution.

You might be interested in
A rectangular plot of farmland will be bounded on one side by a river and on the other three sides by a​ single-strand electric
larisa86 [58]

Answer:

525 x 1,050

A = 551,250 m²

Step-by-step explanation:

Let 'L' be the length parallel to the river and 'S' be the length of each of the other two sides.

The length of  the three sides is given by:

2S+L=2,100\\ L=2100-2S

The area of the rectangular plot is given by:

A=S*L\\A=S(2100-2S)\\A=2100 S -2S^2

The value of 'S' for which the area's derivate is zero, yields the maximum total area:

\frac{dA(S)}{dS}=\frac{d(2100 S -2S^2)}{dS}\\0= 2100 - 4S\\S=525

Solving for 'L':

L=2100-(2*525)\\L=1,050

The largest area enclosed is given by dimension of 525 m x 1,050 and is:

A = 525*1,025\\A=551,250\ m^2

5 0
3 years ago
A gas has a volume of 5.0 L at a pressure of 50kPa. What happens to the volume when then the pressure is increased 125kPa. The t
Olegator [25]

9514 1404 393

Answer:

  volume goes to 2.0 L

Step-by-step explanation:

At constant temperature, volume and pressure are inversely related. Increasing the pressure by a factor of 125/50 = 2.5 will cause the volume to be reduced by that factor.

  volume = 5.0L / 2.5

  volume = 2.0 L

7 0
2 years ago
Given the volume of a sphere is 268.1cm^3, what is she surface area?
EastWind [94]
SA=201.7cm^2 
I used the equation 
SA=pi^1/3(6*V)^2/3 in case you have any more questions like this 
3 0
3 years ago
I need to know this pleaseeee
Natalka [10]

Answer:

(-4,-3)

Step-by-step explanation:

The x value is -4 and the y value is -3

6 0
2 years ago
At this rate, how much would 6 bagels cost?
dolphi86 [110]

Answer:

2 ½ dollars

Step-by-step explanation:

You take half of 5 and that makes 2 ½

6 0
2 years ago
Other questions:
  • What is the vertex form of the equation?
    15·1 answer
  • Which number is greater 0.45 0r 0.449
    6·2 answers
  • Which expression is equivalent to 2(6v)
    5·1 answer
  • Carlos purchased an antique chair for $56.
    9·1 answer
  • What are the terms and coefficients of the expression?<br><img src="https://tex.z-dn.net/?f=12%20%2B%208r%20-%203%28s%20-%205%29
    10·1 answer
  • Help please stat! Brainlist!
    10·1 answer
  • How many minutes are there in a day?
    6·2 answers
  • How do you solve with all the steps?<br> |-2(x+2)|=1
    8·1 answer
  • Amy is training for a half marathon. in practice, she runs 2 miles in 15 minutes. If she continues at the same rate, how many mi
    15·1 answer
  • Write 308 as a product of its prime factor
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!