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
nekit [7.7K]
3 years ago
5

Solve the following system of equations by elimination. Express

Mathematics
1 answer:
Greeley [361]3 years ago
4 0
Add the two equations together with the same variables

-x+4x=3x
-3y+3y=0
20+1=21

You now get

3x=21

Divide and find x =7

Plug in x to the equation to find y
Y=-9

(7,-9)
You might be interested in
Find the volume of the cylinder whose base area is (4x)2 and height is (5x)2.
Gre4nikov [31]

Answer:

Step-by-step explanation:

The computation of the volume of the cylinder is shown below:

As we know that

The Volume of the cylinder is

= base × height

= (4x)^2 + (5x)^2

=16x^2 + 25x^2

= 41x^3

Hence, the volume of the cylinder is 41x^3

4 0
3 years ago
In a pen with rabbits and chickens someone counted 25 heads and 80 legs a rabbit has four legs and each chicken has 2 legs, how
Komok [63]
I just kind of sat here playing with numbers i dont really know a shortcut but the answer is 10 chickens and 15 rabbits 
10*2= 20 each chicken has two legs so thats 10 heads 20 legs
15*4=60 each rabbit has four legs so thats 15 heads 60 legs
15+10=25 heads
20+60=60 legs
6 0
3 years ago
Read 2 more answers
What is the value of 6/x + 2x2, when x = 3?
aliina [53]
Replace x = 3 into <span>6/x + 2x^2

</span>6/x + 2x^2

=6/3 + 2 (3)^2
= 2 + 2(9)
= 2 + 18
= 20
3 0
3 years ago
Ms. Johnson was grading Drake's test. Drake got 27 out of 30 questions correct. What percent is equivalent to the fraction of th
andreev551 [17]
27/30 as a percentage is 90%
5 0
3 years ago
Find the area of a circle with diameter,
DIA [1.3K]

Answer:

A = 25pi m^2

Step-by-step explanation:

We know the diameter, we need the radius

r = d/2

r = 10/2 = 5

The area of a circle is given by

A = pi r^2

A = pi (5)^2

A = 25pi m^2

5 0
3 years ago
Other questions:
  • Evaluate.<br> 17 + 330 • 20 ÷ 10² ÷ 2 – 14
    10·2 answers
  • Draw in radii OK and NL. Since OK and JK are radii of the same circle, they are _________. This means that OK = 12. Add the leng
    6·1 answer
  • dawn has 5/6 yard of lace. She uses 4/5 of it for a dress and the rest for a jewel box. How much lace does she use for the jewel
    15·2 answers
  • Cherries cost $5.68 a pound. Will $20 be enough to buy a 4.1-pound bag of cherries? Explain how to determine whether $20 is the
    10·2 answers
  • Multiplying decimals with models
    11·2 answers
  • I suck at this, i know. please help, will offer 15 points
    6·1 answer
  • Help please due tonight <br><br>50 points + brainliest​
    12·1 answer
  • You roll a pair of fair six-sided dice. The sample space of 36 possible outcomes is shown below. Based on this
    13·1 answer
  • Geometry math question
    12·2 answers
  • Simplify this question <br> 8a-6(1-6a)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!