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2 years ago

Consider the following system of equations 2x+3y=45 x+y=10 what is the x value of the solution for this system

2 answers:

5 0

Step 1- for 2x+3y=45 subtract 2x on each side
ex- 2x+3y=45
-2x. -2x
step 2- 3y=-2x+45 now divide each variable by 3 to get y by itself
step 3- y=-0.66x+15

do the same for. x+y=10
which would be. y=-x+10

now that you have both equations in y=mx+b form, you have to find x

step 4- put both equations together
step 5- -0.66+15=-x+10 add 0.66,both sides. +0.66. +0.66

step 6- 15=-0.34x+10 subtract 10 on each side -10. -10
step 7- 5=-0.34x divide -0.34 on each side. ÷-0.34. ÷-0.34

answer is x= -14.7

scZoUnD [109]2 years ago

3 0

2x + 3y = 45
x + y = 10......y = 10 - x

2x + 3(10 - x) = 45
2x + 30 - 3x = 45
-x + 30 = 45
-x = 45 - 30
-x = 15
x = -15 <====

and y = 25

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20% off
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4 0

2 years ago

Read 2 more answers

Identify each pair of angles as corresponding, Alternate interior, alternate exterior, or consecutive interior and solve for X

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Answer:

Step-by-step explanation:

19). Angles measuring 90° and (21x + 6)° are Alternate exterior angles.

Therefore, 21x + 6 = 90

2x = 90 - 6

2x = 84

x = 42

21). Angles measuring 60° and (8x - 4)° are Alternate interior angles,

8x - 4 = 60

8x = 60 + 4

x = $\frac{64}{8}$

x = 8

23). Since, angles measuring (-1 + 14x)° and (12x + 17)° are Alternate exterior angles

Therefore, (-1 + 14x) = (12x + 17)

14x - 12x = 17 + 1

2x = 18

x = 9

25). Both the angles (x + 96)° and (x + 96)° are consecutive interior angles.

Therefore, (x + 96)° + (x + 96)° = 180° [Property of consecutive interior angles]

2x + 192 = 180

2x = 180 - 192

2x = -12

x = -6

Now measure of (x + 96)° = -6 + 96

= 90°

26). Both the angles (20x + 5)° and (24x - 1)° are consecutive interior angles.

Therefore, (20x + 5)° + (24x - 1)° = 180°

44x + 4 = 180

44x = 176

x = 4

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2 years ago

The area of a rectangle is at least 115 square centimeters. The width of the rectangle is 5 centimeters and the length of the re

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2 years ago

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UNO [17]

To make it like a simple, I'll make an equation. Let x be the number of hours because x represents unknown and we don't know the hours. Then your per hour is $7.25 right? so it would be x7.25. You want to know how many hours you will work so you can earn $125. The equation is simple as this x7.25 = 125.
All you have to do is divide the equation by 7.25 because that's your per hour.
It will look like this, <u>x7.25</u> = <u>125</u> then the answer would be 17.24 hours.
7.25 7.25

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2 years ago

Suppose that we were going to conduct a study to determine if there is an decrease in risk of getting lung cancer based on wheth

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Answer: Option C

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= 0.25

In group(2), the risk is= 5/1000 x 100

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So, option C is correct.

7 0

2 years ago