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natta225 [31]
3 years ago
15

{3x+2y = -5 {4x-3y = -18

Mathematics
1 answer:
Bas_tet [7]3 years ago
5 0

Answer: x = -3, y = 2

<u>Step-by-step explanation:</u>

3x + 2y = -5   →   3(3x + 2y = -5)   →   9x + 6y = -15

4x - 3y = -18   →   2(4x - 3y = -18)   →  <u> 8x - 6y </u>= <u>-36 </u>

                                                            17x       = -51

                                                        <u>  ÷17        </u>   <u>÷17 </u>

                                                               x      =   -3

 3x + 2y = -5

3(-3) + 2y = -5

 -9  + 2y = -5

<u>  +9         </u>  <u> +9 </u>

         2y =   4

      <u> ÷2  </u>    <u>÷2 </u>

           y =  2


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8 0
3 years ago
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Rhea got a new e-scooter. She wanted to show it to her friend on the way to the library.Her friend ronan's house is due north of
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The distance between rhea and her friend's house could be 8 km and The distance of the library from the rocks house could be 15 km.

<h3>What is Pythagoras' Theorem?</h3>

If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:

|AC|^2 = |AB|^2 + |BC|^2    

where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).

rhea got a new e-scooter. She wanted to show it to her friend on the way to the library.

Her friend Ronan's house is due north of her house.

After showing him the new scooter she went to the library which is due west from rocks house.

while returning back she drove 17km diagonally to her house.

By Pythagoras' theorem

|AC|^2 = |AB|^2 + |BC|^2    

Here we can assume that

AB = The distance between rhea and her friend's house.

BC = The distance of the library from rocks house.

The triplet of the 17 would be (8, 15, 17)

So, we can say that the AB could be 8 km and BC could be 15 km or vice versa.

Learn more about Pythagoras' theorem here:

brainly.com/question/12105522

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2 years ago
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Based on the question, we don't need the information that Mike wants to save 1750 in 12 months.

We just need to focus on how he is saving 150 every month, for 11 months.

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He will save $1650 if he saves $150 every month for 11 months.

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