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3 years ago

N-10+9n-3 combining like terms

1 answer:

7 0

N-10+9N-3. First combine like terms. -10 + -3 is -13. N + 9N = 10 N. Now all you need to do is divide. -13/10 equals: -1.3 You're welcome!

-Twix

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16. Find the value of x* 8. 2x-6 A 10 B 7 C -7 D -10

Vikki [24]

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$2x - 6 = 8$

Add sides 6

$2x - 6 + 6 = 8 + 6$

$2x = 14$

Divide sides by 2

$\frac{2x}{2} = \frac{14}{2} \\$

$x = 7$

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The correct answer is (( B )) .

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5 0

3 years ago

Read 2 more answers

A catapult launches a boulder with an upward velocity of 120 ft/s. The height of the boulder, h,

Vlad1618 [11]

Answer:

Reaches a maximum height of 235.00 feet in 3.75 seconds.

Step-by-step explanation:

The height of the boulder, h, in feet after t seconds is given by the function is given by :

$h=-16t^2+120t+10$ .....(1)

For maximum height, put $\dfrac{dh}{dt}=0$

i.e.

$\dfrac{d(-16t^2+120t+10)}{dt}=0\\\\-32t+120=0\\\\32t=120\\\\t=3.75\ s$

Put t = 3.75 in equation (1). So,

$h=-16(3.75)^2+120(3.75)+10\\\\h=235\ \text{feet}$

So, the boulder's maximum height is 235 feets and it takes 3.75 s to reach to its maximum height.

3 0

2 years ago

Factor completely: 9p^2 - 9

Ratling [72]

Answer:

9p^2 - 9

9(p²-1²)

9(p+1)(p-1)

3 0

2 years ago

Read 2 more answers

Help I don’t get it

vlada-n [284]

Answer:

143

Step-by-step explanation:

Your equation to find x is:

140+146/2 = 143

3 0

2 years ago

Is this a function? please explain if possible...

zlopas [31]

It is a function. Every x value is different.

3 0

2 years ago