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antiseptic1488 [7]
3 years ago
10

Find the values for x and y

Mathematics
2 answers:
mel-nik [20]3 years ago
4 0
Both form straight angles, which are 180 degrees.

x+4y+x+y=180
2x+5y=180

4x+y=180

Solve the second equation for y and substitute the variable.
y= -4x+180

2x+5(-4x+180)=180
2x-20x+900=180
-18x= -720
x=40

Plug the x value in
4(40)+y= 180
160+y=180
y=20

Final answer: x=40, y=20
Assoli18 [71]3 years ago
3 0
X+4y+x+y= 4x+y=180
simplify by adding like terms
2x+5y= 4x+y=180
Subtract y from each side
2x+4y=4x=180
Subtract 2x from each side
4y=2x=180
y=180/4=45
x=180/2=90
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What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?
Gwar [14]
First 
4x^{2} + 12x + 3 = 0
determine if this equation were factorable, it's not for this one
so I use quadratic formula, try to search the formula online

x1 =  \frac{-12 +  \sqrt{(12)^{2} - 4*4*3} } {2*4} =  \frac{-12 +  4\sqrt{6} }{8} =  \frac{4(-3 +  \sqrt{6}) }{8} =   \frac{-3 + \sqrt{6}}{2} = - 0.28
x2 = \frac{-12 - \sqrt{(12)^{2} - 4*4*3} } {2*4} = \frac{-12 - 4\sqrt{6} }{8} = \frac{4(-3 - \sqrt{6}) }{8} = \frac{-3 - \sqrt{6}}{2} = - 2.72

<span>x ≈ −2.72 and x ≈ −0.28 is the solution</span>

3 0
4 years ago
This is a question I need help with​
OverLord2011 [107]

Answer:

55

Step-by-step explanation:

180=35+90+m∠3

5 0
2 years ago
What is the equation of the line that passes through (5,-2) and (-3,4)
tester [92]
(5,-2)(-3,4)
slope = (4 - (-2) / (-3 - 5) = 6/-8 = - 3/4

y = mx + b
slope(m) = -3/4
use either of ur points...(5,-2)...x = 5 and y = -2
now we sub and find b, the y int
-2 = -3/4(5) + b
-2 = -15/4 + b
-2 + 15/4 = b
-8/4 + 15/4 = b
7/4 = b

so ur equation is : y = -3/4x + 7/4 <==

3 0
4 years ago
9548305834058+546325413
Ksju [112]
I don’t really know but it’s lost like the answer and yea
3 0
3 years ago
Read 2 more answers
Answer This Question. Good Luck!
Olenka [21]
The answer is 60 it was easy
4 0
3 years ago
Read 2 more answers
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