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Serhud [2]
3 years ago
15

Solve the system of equations −4x+3y=−2 y=x−1 ​ x = y =

Mathematics
1 answer:
dolphi86 [110]3 years ago
4 0
Answer: x = -1 and y = -2

Step-by-step explanation:

So if you know y = x-1 you can plug that in where y is in the first equation

-4x + 3(x-1) = -2

Distribute the 3:

-4x +3x -3 = -2

Combine like terms:
-x -3 = -2

Add 3 to both sides:
-x = 1

Multiply by -1:
X = -1

Then you plug that into the other equation to get y=(-1)-1

Which is -2
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What is the value of x
Anika [276]

We know that the right triangle has one 90 degree angle and two acute (< 90 degree) angles. Since the sum of the angles of a triangle is always 180 degrees.

<u>To find x:</u>

(10x - 20) + (6x + 8) =  180

16x - 12 = 180

      +12     +12

16x = 192

-----    -----

16        16

x = 12

<u>Check:</u>

(10(12) - 20) + (6(12) + 8) = 180

(120 -  20) + (72 + 8) = 180

100 + 80 = 180

180 = 180

<u>Angle (10x - 20):</u>

(10(12) - 20)

(120 - 20)

100

<u>Angle (6x + 8):</u>

(6(12) + 8)

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6 0
3 years ago
On her way to work, Mrs. Larsen gets a green light at a certain traffic light only 30% of the time. She wants to find the probab
vladimir1956 [14]
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36.09%
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7 0
2 years ago
PLEASE HELP ME GIVING 20 POINTS!! 16 &gt; -8 + x
KonstantinChe [14]

Answer:

The answer is x<24

7 0
2 years ago
Read 2 more answers
Factor 0.04m 2 - n 2. (0.2n - m)(0.2n + m) (0.2m - n)(0.2m - n) (0.2m - n)(0.2m + n)
Romashka [77]
-----------------
0.04m² - n²

(0.2m)² - n²

<span>(0.2m + n)(0.2m -  n)</span>
-----------------
5 0
2 years ago
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A sandwich shop is ordering apples and grapes to make chicken salad.Apples cost $2.19 per pound and grapes cost $2.60 per pound.
andrew11 [14]

Answer:

Grapes=19.51

Step-by-step explanation:

Apples=$2.19 per pound

Grapes=$2.60 per pound

Apples+Grapes=20 pounds

A+G=20

A=20-G

Equation is

PaA+PgG=35.80

2.19A+2.60G=35.80

2.19(20-G)+2.60G=35.80

43.8-2.19G+2.60G=35.80

43.8-0.41G=35.80

-0.41G=35.80-43.8

-0.41G=-8

Divide both sides by 0.41

G=19.51 pounds

Recall

A=20-G

A=20-19.51

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8 0
3 years ago
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