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natima [27]
2 years ago
10

Maths Aryabhatta

Mathematics
2 answers:
bogdanovich [222]2 years ago
5 0

Answer:

(- 2, - \frac{1}{3} )

Step-by-step explanation:

Given the 2 equations

2x + 3y + 5 = 0 → (1)

5x - 3y + 9 = 0 → (2)

Rearrange (1) expressing 3y in terms of x by subtracting 2x + 5 from both sides

3y = - 2x - 5

Substitute 3y = - 2x - 5 into (2)

5x - (- 2x - 5) + 9 = 0 ← distribute parenthesis on left side and simplify

5x + 2x + 5 + 9 = 0

7x + 14 = 0 ( subtract 14 from both sides )

7x = - 14 ( divide both sides by 7 )

x = - 2

Substitute x = - 2 into either of the 2 equations and solve for y

Substituting into (1)

2(- 2) + 3y + 5 = 0

- 4 + 3y + 5 = 0

1 + 3y = 0 ( subtract 1 from both sides )

3y = - 1 ( divide both sides by 3 )

y = - \frac{1}{3}

solution is (- 2, - \frac{1}{3} )

solong [7]2 years ago
4 0

Answer:

X= -2; Y=-⅓

Step-by-step explanation:

1. make X the subject of the first equation

2. put the term of X from the first equation into the second.

3. solve for y.

4. insert value of y into first equation for value of X

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Ms. Peters drove from her home to the park
worty [1.4K]

It takes 15 minutes for Ms. Peter to drive from park to her home

Given :

from her home to the park at an average speed of 30 miles per hour and

returned home along the same route at an average speed of 40 miles per hour

it takes 20 minutes to travel

Convert 20 minutes in to hour (divide by 60)

20 minutes = 1/3 hour

We know that distance = speed x time

 From home to park, distance  =speed \cdot time =30 \cdot \frac{1}{3} =10 miles

So , distance between home  and park is 10 miles

Now we calculate the time taken to return from park to home

time taken =\frac{distance}{speed} =\frac{10}{40}=\frac{1}{4}\\

Time taken is 1/4 hours. Convert it into minutes by multiplying by 60

\frac{1}{4} \cdot 60=15

So it takes 15 minutes for Ms. Peter to drive from park to her home

Learn more : brainly.com/question/18839247

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Please answer these and I will give brainliest!!!
ollegr [7]

Answer:

#1. 1232 feet per minute

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Solve the following system of equations graphically.<br> y=3x+4<br> y=-2x-5
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Answer:

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Step-by-step explanation:

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