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Monica [59]
3 years ago
9

Plz can someone help me show work for these two problems!! 3x + y = 13 2x - y = -1

Mathematics
1 answer:
Alisiya [41]3 years ago
3 0

Answer:

3x +y = 13

Or, x=13-y/3......eqn(i)

Now putting the value of x

2x - y = - 1

Or, 2(13-y/3) - y = - 1

Or, 26 - 2y /3 - y = -1

Or, 26 - 2y - 3y = - 3

Or, 26 - 5y = - 3

Or, - 5y = - 3 - 26

Or,y = - 39/ (- 5)

Or, y = 7.8~

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Ok please help, and if u explain how you got it then ill give you brainly
Naya [18.7K]

Answer:

x=28

Step-by-step explanation:

So a triangle is 180 degrees in total then you would subtract 40 from 180 because the top angle and leaving you with 140 then divide by 5 because the bottom two getting you 28 then you could just plug in 28 for x on each angle

180-40=140

140/5=28

2(28)=56

56 is angle A

8 0
3 years ago
Read 2 more answers
Can someone help me out? :P
Katena32 [7]
Multiply 12 and 5 which is 60, then multiply 8 and 3 which is 24. Subtract 24 from 60 to find the shaded area which is 36, so the shaded area equals 36 cm.

Multiply 36, 28, 11, and 22. Which equals 243,946 m. Then multiply 7, 6, 18, and 13 which equals 9,828 m. Then subtract 9,828 from 243,936 which equals 234,108
7 0
3 years ago
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O is the midpoint of segment IU. If I is (-7, 2) and O is (5, -8), what are the coordinates of U?
vaieri [72.5K]

Answer:

(17 , -18)

Step-by-step explanation:

5 = (-7 + x) / 2

x = 17

-8 = (2 + y) / 2

y = -18

3 0
3 years ago
Ignore everything I wrote but I’m supposed to be writing two-column proofs and I need help with these
zavuch27 [327]

What you have so far is perfect. You started with the given statements and then use the definition of midpoint to show that each piece is equal to one another.

From here, use the transitive property

We combine these two statements

  • WX = XY
  • XY = YZ

into the following

WX = YZ

So we can effectively say WX = XY = YZ meaning the segments WX, XY and YZ are all the same length.

Through similar logic, we can chain together

  • VW = WX
  • WX = XY

to get VW = XY

-------------

Consequently this means VW, WX, XY, and YZ are all the same length

Let's call that length m.

m = length of segment VW = length of WX = etc etc

This means,

VY = VW+WX+XY = m+m+m = 3m

and

WZ = WX+XY+YZ = m+m+m = 3m

Both VY and WZ are exactly 3m units long, therefore, VY = WZ

7 0
3 years ago
A free kick is given in a soccer game where the player taking the kick is 14 yards from the left post. The goalie is standing on
JulsSmile [24]

How far is the kicker from the right post, to the nearest yard is: 23 yards.

<h3>Distance</h3>

Using sine theorem

Let y represent the numbers of yards

Left triangle=3/sinx=14/sin∝

Right triangle=5/sinx=y/sin(180-∝°)

sin∝°=sin(180-∝°)

Hence,

3/5=14/y

y=5×14/3

y=23 yards

Therefore how far is the kicker from the right post, to the nearest yard is: 23 yards.

Learn more about distance here:brainly.com/question/23848540

#SPJ1

4 0
2 years ago
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