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joja [24]
3 years ago
9

How to solve 2x plus y equals 4

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
7 0
2x + y = 4, so 2x = 4 - y, so x = 2 - y/2. or if solving for y, y = 4-2x.
natali 33 [55]3 years ago
5 0

Answer:

y=-2x+4

Step-by-step explanation:

2x+y=4

Step 1: Add -2x to both sides.

2x+y+−2x=4+−2x

y=−2x+4

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iris [78.8K]

The cost per foot of redwood and of pine is $3.5 and $1.5 respectively.

<h3>How to solve simultaneous equation?</h3>

let

  • cost of redwood = x
  • cost of pine = y

50x + 70y = 280

100x + 60y = 440

Multiply (1) by 2

100x + 140y = 560

100x + 60y = 440

subtract to eliminate x

80y = 120

y = 120/80

y = $1.5

substitute y = 1.5 into (1)

50x + 70y = 280

50x + 70(1.5) = 280

50x + 105 = 280

50x = 280 - 105

50x = 175

x = 175 / 50

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4 0
2 years ago
(Click on the picture!)
m_a_m_a [10]

Answer:

A is at 1 inch (or whatever units being used)

B is at 2.5 or 2 1/2 units

C is at 3 1/8 units

D is at 3 5/8 units

E goes on the first line after the 4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is negative 3/8 plus 7/8
Luba_88 [7]

Hi there!

To add fractions there are three simple steps:

1. Make sure the bottom numbers (denominators) are the same. → In your case you're all good, both your denominators are 8.

2. Add the top numbers (numerators) and put that answer over the denominator :

-3 + 7 = 4 → \frac{4}{8}

3. Simplify the fraction (if needed). → In your case, you do need to simplify your fraction :

Divide both your numerator and denominator by 4 to get your simplified fraction :

4 ÷ 4 = 1

8 ÷ 4 = 2

Your simplified fraction is : \frac{1}{2}


There you go! I really hope this helped, if there's anything just let me know! :)

8 0
3 years ago
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Please help quarter ends tomorrow and I don’t know what to do I’m failing all my classes
VladimirAG [237]

Answer:

The answer is: x-y-10=0

8 0
3 years ago
How do you solve this?​
ycow [4]

Answer:

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A = 1/2abSinC

= 1/2 × 10.3 × 6.2 × sin 11.3

= 6.26m²

4 0
3 years ago
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