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Margaret [11]
3 years ago
5

Solve using elimination PLEASE I NEED HELP!!! IT WOULD REALLY MEAN A LOT IF ANYONE CAN ANSWER THIS! 16 POINTS!!!

Mathematics
1 answer:
Marysya12 [62]3 years ago
4 0

Answer:

  (x, y) = (2, -3/4)

Step-by-step explanation:

The point of the "elimination" technique is to combine the equations in a way that eliminates one of the variables. Sometimes this involves multiplying one or both of the equations by constants before you add those results together. In any event, the first step is to look at the coefficients of the variable terms to see if there is a simple combination of them that will result in zero.

The y terms have coefficients that are opposites of each other (4, -4), so you can simply add the two equations to eliminate y as a variable.

  (2x +4y) +(x -4y) = (1) +(5)

  3x = 6 . . . . . simplify

  x = 2 . . . . . . divide by 3

Now, you find y by substituting this value into one of the equations. I would choose the equation with the positive y-coefficient:

  2(2) +4y = 1

  4y = -3 . . . . . . subtract 4

  y = -3/4

Then the solution is ...

  (x, y) = (2, -3/4)

_____

A graphing calculator confirms this solution.

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Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
maw [93]

Answer:

1. 4 is the constant

2. x > -2

3. 2.86 inches

^The formula for the circumference of a circle is C=2∏r, in which r=radius. To find the radius, then, we insert 18 in for the circumference. So 18=2∏r. Solving for r gives 9/∏, or approximately 2.86 inches.

hope this helped:)

Brainliest?

8 0
3 years ago
PLEASE HELP 30 POINTS AND BRAINLY
Umnica [9.8K]

Answer:

I think the option B suits the most

Step-by-step explanation:

8 0
2 years ago
Joey collected 30 eggs. The 30 eggs fills 1/10 of an egg crate. What is the total number of eggs the egg crate can hold?
joja [24]
You times 30 times 10 equals 300 so you answer would be 300 eggs
6 0
3 years ago
Read 2 more answers
A) how many ways are there to choose 10 players to take the field?
Kruka [31]

A. C(13, 10) = 13! = 13·12·11 = 13 · 2 · 11 = 286.C(13, 10) = 13! = 13·12·11 = 13 · 2 · 11 = 286.

B. P(13,10)= 13! =13! =13·12·11·10·9·8·7·6·5·4. (13−10)! 3!

C. f there is exactly one woman chosen, this is possible in C(10, 9)C(3, 1) =

10! 3!

9!1! 1!2! 10! 3!

8!2! 2!1! 10! 3!

7!3! 3!0!

= 10 · 3 = 30 ways; two women chosen — in C(10,8)C(3,2) =

= 45·3 = 135 ways; three women chosen — in C(10, 7)C(3, 3) =

= 10·9·8 ·1 = 120 ways. Altogether there are 30+135+120 = 285 1·2·3

<span>possible choices.</span><span> 
</span>

  


5 0
3 years ago
two horizontal lines are cut by a transversal. what is the least number of angle measures you need to know in order to find the
jeka94

Answer: The answer is only one angle. Explained.

Step-by-step explanation: As given in the question and shown in the attached figure, the lines horizontal lines 'p' and 'q' are cut by the transversal 'r'. We need to determine the least number of angles among the eight angles mentioned in the figure to find the measure of all the angles.

Suppose, the measure of ∠1 is given as x°.

So, ∠2 = 180° - x (linear pair of angles),

∠3 = x (=∠1, vertically opposite angles),

∠4 = 180° - x (=∠2, verticaly opposite angles),

∠1 = ∠5, ∠2 = ∠6, ∠3 = ∠7, ∠4 = ∠8. These are pairs of correspomding angles.

Thus, we need the measure of only one angle to find the measure of all the angles.

Hence explained.  

8 0
3 years ago
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