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
UkoKoshka [18]
3 years ago
10

-4x-2y=-12 4x+8y=-24 Someone help me solve systems of equations by elimination please!

Mathematics
1 answer:
svet-max [94.6K]3 years ago
8 0
-4x - 2y = - 12
4x + 8y = - 24
_____________(+)
/      +6y = - 36

y = -36/6;
y = -6;

4x - 48 = -24;
4x = 24;
x = 24/4;
x = 6.
You might be interested in
Find the explicit formula for a 1 =-4,a n =a n-1 +9,n>=2
Mrrafil [7]

Given:

a_1=-4 and a_n=a_{n-1}+9 where n\geq 2.

To find:

The explicit formula for the given recursive formula.

Solution:

We know that recursive formula of an AP is:

a_n=a_{n-1}+d

Where, d is the common difference.

We have,

a_n=a_{n-1}+9

Here, d=9.

The first term of the AP is a_1=-4.

The explicit formula for an AP is:

a_n=a_1+(n-1)d

Substituting a_1=-4 and d=9, we get

a_n=-4+(n-1)9

a_n=-4+9n-9

a_n=-13+9n

Therefore, the required explicit formula for the given sequence is a_n=-13+9n.

6 0
3 years ago
I don't understand someone help me help out a barb plz.
ss7ja [257]

Answer:

Step-by-step explanation:

so you are doing 4x times 4x which = 16x

so now you do 16x-9 which = 7x

8 0
4 years ago
Write two different expressions to represent the sale price of a fishing pole, f, after a 20% discount.
Rom4ik [11]

Answer:

When we have a discount of X% of the original price, the new price is calculated as:

New price = (original price) - (original price)*(X%/100%)

In our case, let's define:

P = original price of the fishing pole

f = price of the fishing pole after the discount

X% = 20%

Then the equation for the price of the fishing pole is:

f = P - P*(20%/100%) = P - P*0.2 = P*(1 - 0.2) = P*0.8

f = 0.8*P

This means that the price after the discount is 0.8 times the original price.

7 0
3 years ago
PLEASE ANSWER THIS FAST!!!!!!
o-na [289]

Answer:

B

Step-by-step explanation:

The correct answer is B

GK = 5 and KF = 5

5/5 = 1

HJ = 3

JG = 3

HJ/JG = 1

7 0
3 years ago
Read 2 more answers
Find two positive numbers whose product is 36 and whose sum is a minimum.
alukav5142 [94]
Let one of the numbers be x. The other number cab then be represented as 36-x (x+36-x = 36).
The product can then be represented as y = x(36-x) or y=36x-x2

The maximum or minimum is always on the axis of symmetry which has the formula x=-b/2a.
In our case, the axis of symmetry is -36/-2, so x=18.

If one number is 18 and the 2 numbers add to 36, the other number is 18 as well.
So the 2 numbers are 18 and 18 and the maximum product is 324,
8 0
3 years ago
Other questions:
  • Wholesale price $12.50. %Markup 78% <br> what is the $Markup and retail sale price
    13·1 answer
  • The perimeter of a square is 4 times as great as the length of any of it's sides.Determine if the perimeter of a square is propo
    14·1 answer
  • How do I solve 3xy-2x= 17
    10·1 answer
  • The area of arizona is 114006 squere miles. what is the expanded form of this number
    10·1 answer
  • If a bag contains 12 quarters, 6 dimes, and 18 nickles, what is the part-to-whole ratio of quarters to all coins?
    12·2 answers
  • Would you rather...... justify your answer.
    13·1 answer
  • N/A yhhhhb hhhbbub bb he hb hb hb h. Hb hb h
    15·2 answers
  • I USED ALL MY POINTS! PLEASE HELP ME ASAP!!!
    11·2 answers
  • You start at (-3, 0). You move right 3 units and down 5 units. Where do you end?
    7·1 answer
  • Scott wants to buy fencing to place around a semicircle rock garden. The diameter of the semicircle is 16 feet. Using 3.14 as pi
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!