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tensa zangetsu [6.8K]
3 years ago
10

2 x square + 5 x - 3 = 0

Mathematics
2 answers:
Annette [7]3 years ago
7 0

Your question has been heard loud and clear.

2x^2+5x-3=0

Splitting the middle term (5x) we get , -1x+6x

So , 2x^2-1x+6x-3=0

2x^2-1x+6x-3=0

(2x^2-1x)+(6x-3)=0

taking common factor from(2x^2-1x) which is x and taking common factor from (6x-3) which is 3 , we get

x(2x-1)+3(2x-1)=0

So , solution that we get is

(x+3)   and  (2x-1)  

Thank you.

marusya05 [52]3 years ago
7 0

Step-by-step explanation:

2x^2+5x-3=0.

which will be 2x^2+2x+3x-3=0.

2x(x+1)+3(x+1)=0.

2x+3=0,x+1=0.

x=-3/2,x=-1..

I hope this helps but please recheck the question especially 5x is it +5x or -5x.....Thank you for the question

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Mattie Evans drove 150 miles in the same amount of time that it took a turbopropeller plane to travel 600 miles. The speed of th
lianna [129]
The speed of the plane is 200 mph.

We start out with the formula d=rt, where d is distance, r is rate (speed) and t is time.  We know the time is the same for both vehicles, so we will solve this formula for t:

d=rt

Divide both sides by r:
d/r = t

Since the time is the same, we will have a proportion in the form

d/r = d/r

The speed of the car is x, and it travels 150 miles.  The speed of the plane is 150 faster than x, or x+150, and it travels 600 miles:

150/x = 600/(x+150)

Cross multiplying we have:
150(x+150) = 600*x
150x + 22500 = 600x

Subtract 150x from both sides:
150x + 22500 - 150x = 600x - 150x
22500 = 450x

Divide both sides by 450:
22500/450 = 450x/450
50 = x

The speed of the car is 50, and the speed of the plane is 50+150 = 200
7 0
3 years ago
Write an equation and explain what the variables represent, please help.
Agata [3.3K]

ANSWER

8x + 3y = 2000

x => The number of adults

y => The number of children

EXPLANATION

Let the number of adults be x.

Let the number of children be y.

Each adult will be charged $8 admission. This would mean that the charges for x adults will be:

8 * x = $8x

Each child will be charged $3 admission. This would mean that the charges for y children will be:

3 * y = $3y

The club wants to earn $2000 from admission charges. This means that adding the total charges for adults and children should yield $2000.

Therefore, we have:

8x + 3y = 2000

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8 0
1 year ago
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kicyunya [14]

Answer:

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Step-by-step explanation:

Three consecutive odd integers can be represented by

x,  x + 2,  x + 4.  You add 2 to each one to get the next one. Fun fact: you would do the same thing if the problem said the integers were even!

The largest integer is x + 4, so the sentence in the problem translates to an equation (sum means to add the integers together):

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Subtract 2x.

x + 6 = 21

Subtract 6.

x = 15

The integers requested are 15, 17, 19.

Check:  Their sum is 51, which is 13 more than twice 19.

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Answer:

Step-by-step explanation:

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