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Shtirlitz [24]
4 years ago
13

Solve the system of equation by adding or subtracting. x+4y=4 3x-4y=-4

Mathematics
2 answers:
Alecsey [184]4 years ago
8 0
X=<span><span><span>43</span>y</span>+<span><span>−4</span><span>3 hope this helped</span></span></span>
pychu [463]4 years ago
4 0
When solving for X
~Add -4 to both sides
X+4Y=4
-4. -4
---------------
X=-4y+4

~add 4 to both sides
3x-4y+4=-4+4
3x=4y-4
~divide both sides by three
3x=4y-4
--- ------
3. 3
X=3\4+ -4\3

When solving for Y
~add -x to both sides
x+4y+-x=4+-x
4y=-x+4
~divide both sides by 4
4yy=-x+4
----- ------
4. 4
Y=-1\4x+1

3x-4y=-4
~add -3x to both sides
3x-4yy+-3x=-4+-3x
-4y=-3x-4
----- -------
4. 4
Y=3\4x+1
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Divide the number by 100 and multiply it by how many percent's there are
Remember 1% is 1/100 of a number
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3 years ago
Determine whether 2,5,9,14 is an arithmetic sequence
Fudgin [204]

Answer:

It is not arithmetic sequence

Step-by-step explanation:

If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence.

hope it helps

6 0
3 years ago
10 CDs costs $2.30. A package of 50 CDs costs $10.50. Which is the better buy?
user100 [1]

Answer:

Step-by-step explanation:

Plan A: 10 CDs costs $2.30, so 1 CD cost $0.23

Plan B: A package of 50 CDs cost $10.5, so 1 CD cost $1.05

0.23 < 1.05

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5 0
3 years ago
Read 2 more answers
A 400-meter Olympic-size track can be modeled with a rectangle and two semicircles.
pishuonlain [190]

The answer to both the subparts using the circumference of the circle is:

  • (A) If an athlete runs around the track then the athlete traveled (168.78+73π)m.
  • (B) The area of green space on the track is 0.64m².

<h3>What is a length of a rectangle?</h3>
  • The length of the rectangle is traditionally thought of as being the longer of these two dimensions, however, when the rectangle is depicted standing on the ground, the vertical side is typically referred to as the length.

What is a circumference of a circle?

  • The distance along a circle's perimeter is referred to as its circumference.
  • Circumference of the circle formula: C = 2πr.

Here,

(A) A circuit of a racetrack is equal to the sum of the two lengths of a rectangle and the circumference of the circle.

We get:

  • = 84.39 * 2 + 73π
  • = (168.78 + 73π)m

(B) Let the area of the green space of the track is x.

Then, calculate as follows:

  • 168.78 + xπ = 400
  • x = (400 - 168.78)/π
  • x = 73.64m

So, the inner circle of distance is 73.64 - 73 = 0.64m.

Therefore, the answer to both the subparts using the circumference of the circle is:

  • (A) If an athlete runs around the track then the athlete traveled (168.78+73π)m.
  • (B) The area of green space on the track is 0.64m².

To learn more about the circumference from the given link

brainly.com/question/18571680

#SPJ13

7 0
1 year ago
What is equivilent -5 and 1/2 ?
nadezda [96]
-5 and 1/2 would be -5.5.
As a mixed number, this would be -11/2.
This is because -5 = -5/1 = -10/2 and -10/2 + -1/2 = -11/2.
We know the 1/2 is negative because it is linked with the negative number of -5.

Answers:
-5.5 or -11/2
3 0
3 years ago
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