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sdas [7]
3 years ago
12

Solve the linear equations -2x+5y=39 2x-3y=-25

Mathematics
1 answer:
nata0808 [166]3 years ago
4 0

Answer:

Step-by-step explanation:

hello :

-2x+5y=39 ....(*)

2x-3y=-25....(**)

add(*) and (**) : 2y =64    so : y =64/2 =  32

put this value in (*) : -2x+5(32) = 39 ....continu

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Find the midpoint of the line segment with end coordinates of:<br> (1,4) and (5,2)
poizon [28]
Midpoint formula: (x1+x2)/2, (y1+y2)/2
(1+5)/2 = 6/2 = 3 for x
(5+2)/2 = 7/2 = 3.5 for y
Midpoint: (3,3.5)
8 0
3 years ago
the cost to rent a photo booth for a party is a one time fee of $25 plus $30 per hour the photo booth is running. If the photo b
sdas [7]

Answer: 25+30h=180

Step-by-step explanation:

The one time fee is 25 and plus the $30 per hour so you have 25 plus $30 h= hour equals 180. I took the a test and got it right btw.

6 0
3 years ago
In a rectangular coordinate plane what is the distance between points (-3,0) and (3,8)
zheka24 [161]

To calculate the distance between two points, we can use a formula that is a variation Pythagorean Theorem. Look:


\mathsf{d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}


"d" represents the distance and coordinates are expressed as follows: (x, y)


Let's go to the calculations.


\mathsf{d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}\\\\ \mathsf{d=\sqrt{(3-(-3))^2+(8-0)^2}}\\\\ \mathsf{d=\sqrt{(3+3)^2+(8)^2}}\\\\ \mathsf{d=\sqrt{(6)^2+64}}\\\\ \mathsf{d=\sqrt{36+64}}\\\\ \mathsf{d=\sqrt{100}}\\\\ \underline{\mathsf{d=10}}


The answer is 10 uc.

8 0
3 years ago
Help please thank you
Ad libitum [116K]
In order for the triangle to be isosceles, we have to set two lengths of the triangle equal to each other. 

Let's take the lengths 5x-12 and x+20 and set them equal to each other. 

5x - 12 = x + 20 

Combine like terms by moving them over to their respective sides.

Subtract x from both sides of the equation. 

4x - 12 = 20 

Add 12 to both sides of the equation. 

4x = 32 

Divide both sides by 4. 

x = 8 

Check your answer by substituting. 

5x - 12 = x + 20

5(8) - 12 = 8 + 20

40 - 12 = 28 

28 = 28

Solution: x = 8 




5 0
3 years ago
Please help! Also, please show your work so I understand how to do this!!
Brilliant_brown [7]

Answer:

51

Step-by-step explanation:

5 students travelled by car , leaving 158 - 5 = 153 students to travel by bus.

153 students travelled in 3 full buses, therefore

153 ÷ 3 = 51 students in each bus

8 0
3 years ago
Read 2 more answers
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