3 years ago

Simplify(7x^-2x+5)-(3x^2+4x+10) show all steps

2 answers:

7 0

If we are looking to simplify two trinomials, it is easiest to put them on top of each other and subtract.

7x² - 2x + 5 7x² - 2x + 5
- (3x² + 4x + 10) -3x² - 4x - 10

4x² - 6x - 5

mario62 [17]3 years ago

6 0

-3x^2-4x+14x^-+1-5

this is what I got, hope this helps.

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A lemonade receipt calls for 1/4 cup of lemon juice for every cup of water. Ploy the pairs in the table

jolli1 [7]

Answer:

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Step-by-step explanation:

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3 years ago

A 290-kg flatcar 28 m long is moving with a speed of 6.5 m/s along horizontal frictionless rails. A 95-kg worker starts walking

blsea [12.9K]

Answer:

9.33 seconds

60.67 meters

Step-by-step explanation:

A worker with a speed of 3.0 m/s with respect to a car, starts to walk from one end of the car to the other in the direction of motion of the car.

As the car is 28 m long, then the worker will reach the other end of the car in $\frac{28}{3} = 9.33$ seconds. (Answer)

Now, the car is moving with a speed of 6.5 m/s and in the time of 9.33 seconds, it will move by $6.5 \times 9.33 = 60.67$ meters. (Answer)

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3 years ago

Find the sum and product of the roots. 3x^<br> 2 - 4x - 7 = 0

victus00 [196]

Given the quadratic function, to get the roots we factorize:
3x²-4x-7=0

3x²+3x-7x-7=0
3x(x+1)-7(x+1)=0
(3x-7)(x+1)=0
thus the roots are
x=-1 or x=3/7
thus the sum of the roots will be:
-1+3/7
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3 years ago

The function d(t)=-2t^2+9t+18 most closely represents the height(h) of the golf ball in feet after t seconds. How long is the go

Kobotan [32]

Answer:

Step-by-step explanation:

d(t)=-2t^2+9t+18

calculate the derivate : f'(t) = - 4t+9

f'(t) = 0 : - 4t+9= 0 so t = 9/4

the maximum value is f(9/4) = ....... continue

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How do I solve 12w-8=9w-24

Anettt [7]

Hope this can help you ^_^

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4 years ago