What is the solution to the equations 2x+5y=20, 6x-5y=12

Mathematics

1 answer:

denis-greek [22]3 years ago

7 0

Answer:

x = 4, y = 12/5

Step-by-step explanation:

2x+5y = 20

6x-5y = 12

----------------- (+)

8x = 32 => x = 32/8 => x = 4

2·4+5y = 20 => 8+5y = 20 => 5y = 12 => y = 12/5

You might be interested in

Omar is collecting toy cars. He starts his collection with 2 toy cars that his grandmother gave him. He plans to buy cars each w

d1i1m1o1n [39]

Can you please add the table so i can answer it

4 0

3 years ago

What is the solution to the linear equation?

patriot [66]

Equation: 2/5 + p = 4/5 + 3/5p

Simplify Both Sides:
p + 2/5 = 3/5p + 4/5

Subtract 3/5p from both sides:
p + 2/5 - 3/5p = 3/5p + 4/5 - 3/5p

2/5p + 2/5 = 4/5

Subtract 2/5 from both sides:
2/5p + 2/5 - 2/5 = 4/5 - 2/5

2/5p = 2/5

Multiply both sides by 5/2

(5/2) * (2/5p) = (5/2) * (2/5)

p = 1

Answer: p = 1

Hope that helps!!! (Answer: Letter Choice (A), p = 1

8 0

3 years ago

Raymond has taken a position as the navigator on a speed boat racing team. The team entered a race that starts at Daytona Beach,

erik [133]

Using the rules of cosines, the <span>measure of the turn between the second and third legs of the race</span> is given by

$\cos^{-1}\left( \frac{180^2+160^2-140^2}{2\times180\times160} \right)=\cos^{-1}\left( \frac{32,400+26,600-19,600}{57,600} \right) \\ \\ =\cos^{-1}\left( \frac{39,400}{57,600} \right)=\cos^{-1}(0.6840)\approx47^o$

4 0

4 years ago

Read 2 more answers

A running track in the shape of an oval is shown. The ends of the track form semicircles. A running track is shown. The left and

serg [7]

Two shapes.. a circle and a rectangle. The width of the rectangle serves as the diameter of the circle.
Length = 140 m ; Width = 68 m
Circumference of a circle = 2 π r circumference of a cirlce = 2 * 3.14 * (68m/2) = 2 * 3.14 * 34 m = 213.52
length = 2 * 140 m = 280 m
perimeter of the oval = 213.52 m + 280 m = 493.52 m

8 0

3 years ago

Read 2 more answers

I really need help!Please help me

sergejj [24]

I’m not really good at explaining in words but I hope this picture of my work helps. (Sorry for sloppy writing)

5 0

4 years ago