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
makkiz [27]
1 year ago
14

(Elimination Strategies) Which of these strategies would eliminate a variable in the system of equations? x - 2y = 115x + 3y = -

11Choose all that apply : A) Add the equations B) Multiply the top equation by 5 , then add the equations . C) Multiply the top equation by -5, then add the equations .
Mathematics
1 answer:
tester [92]1 year ago
5 0

As we can see the only one is the option C

-5*(x-2y=11)=-5x+10y=-55

5x+3y=-11

then we add the equations

13y=-66

y=-66/13=-5.07

as we can see C is the correct answer

You might be interested in
How do i find the circumference of a circle? If I use a 3 as an estimate of pie and the circle is 10 mm across
Llana [10]
If you're using pie it would be

2*\pi*5 because the radius is half of the diameter.

But since you're using three it's

2*3*5

If it helps remember: Twinkle twinkle little star, circumference equals 2 pi r
8 0
3 years ago
<img src="https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7BE%7D%7B%20%5Csqrt%7BR%20%7B%7D%5E%7B2%7D%20%2B%20W%20%7B%7D%5E%7B2%7D%20L%
AleksandrR [38]

Answer:

R = sqrt[(IWL)^2/(E^2 - I^2)] or R = -sqrt[(IWL)^2/(E^2 - I^2)]

Step-by-step explanation:

Squaring both sides of equation:

     I^2 = (ER)^2/(R^2 + (WL)^2)

<=>(ER)^2 = (I^2)*(R^2 + (WL)^2)

<=>(ER)^2 - (IR)^2 = (IWL)^2

<=> R^2(E^2 - I^2) = (IWL)^2

<=> R^2 = (IWL)^2/(E^2 - I^2)

<=> R = sqrt[(IWL)^2/(E^2 - I^2)] or R = -sqrt[(IWL)^2/(E^2 - I^2)]

Hope this helps!

7 0
3 years ago
I have to find the circumference of 15 cm​
Pie

Answer:

r = 2.39 and C=2πr=2·π·2.39≈14.99997

Step-by-step explanation:

Using the formula

C=2πr

Solving for r=C 2π=15

2·π≈2.38732

and then u round up the 7 told the 8 to go up.

2.39

7 0
3 years ago
Please need help ASAP
Vsevolod [243]
The other root is (2,0)
6 0
3 years ago
Read 2 more answers
A can of vegetables has radius 2.1 in. and height 5.1 in. Find
Katen [24]

Answer:

70.622 in³

Step-by-step explanation:

Volume of cylinder = \pi r^2h

   = (3.14)(2.1^2)(5.1)

   = 70.622 in³

5 0
3 years ago
Other questions:
  • Clark is having a party at his house. His father has allowedhim to spend at most $20 on snack food. He’d like to but chips that
    14·1 answer
  • Before an election: 23% said they would vote for A, 9% said they would vote for B, 20% said they would not vote. these all voted
    12·1 answer
  • Find the difference 7 7/8 - 3 1/4
    14·1 answer
  • Need help with this question please!!
    9·1 answer
  • What does a and b equals in the quadrilateral
    13·2 answers
  • Is this correct answer
    8·2 answers
  • What is the best estimate of the Area of the figure on the grid if each square has the area of 4 in.²?
    15·1 answer
  • Can anybody help me solve this ?
    9·1 answer
  • I am so confused can someone help me asap??
    14·1 answer
  • The Black Pearl is following a course that is represented by the equation. + ? = 14. . The interception course of the Flying Dut
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!