Add parenthesis to the expression below. 4 + 3 x 2

What is 462 divided by nine

Nadya [2.5K]

Answer:

51.3

Step-by-step explanation:

7 0

3 years ago

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Rewrite as a simplified fraction. 0.6 i need it quick plz and thank you

Firdavs [7]

Answer:

3/5

Step-by-step explanation:

0.6 = 6/10 = 3/5

7 0

3 years ago

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Given s left parenthesis t right parenthesis equals 5 t squared plus 5 ts(t)=5t2+5t, find

finlep [7]

Answer:

The velocity function is $v(t)=10t+5$ .

The acceleration function is $a(t)=10$ .

When t = 44, the velocity is $v(44)=445 \:\frac{ft}{s}$ .

When t = 44, the acceleration is $a(44)=10\: \frac{ft}{s^2}$ .

Step-by-step explanation:

We know that the position function is given by

$s(t)=5t^2+5t$

Velocity is defined as the rate of change of position or the rate of displacement. If you take the derivative of the position function you get the instantaneous velocity function.

$v(t)=\frac{ds}{dt}$

Acceleration is defined as the rate of change of velocity. If you take the derivative of the instantaneous velocity function you get the instantaneous acceleration function.

$a(t)=\frac{dv}{dt}$

The instantaneous velocity function is given by

$v(t)=\frac{d}{dt} s(t)=\frac{d}{dt}(5t^2+5t)\\\\\mathrm{Apply\:the\:Sum/Difference\:Rule}:\quad \left(f\pm g\right)'=f\:'\pm g'\\\\v(t)=\frac{d}{dt}\left(5t^2\right)+\frac{d}{dt}\left(5t\right)\\\\\mathrm{Apply\:the\:Power\:Rule}:\quad \frac{d}{dx}\left(x^a\right)=a\cdot x^{a-1}\\\\v(t)=10t+\frac{d}{dt}\left(5t\right)\\\\\mathrm{Apply\:the\:common\:derivative}:\quad \frac{d}{dt}\left(t\right)=1\\\\v(t)=10t+5$

The instantaneous acceleration function is given by

$a(t)=\frac{dv}{dt} =\frac{d}{dt}(10t+5)\\\\\mathrm{Apply\:the\:Sum/Difference\:Rule}:\quad \left(f\pm g\right)'=f\:'\pm g'\\\\a(t)=\frac{d}{dt}\left(10t\right)+\frac{d}{dt}\left(5\right)\\\\a(t)=10$

To find the velocity and acceleration when t = 44, we substitute this value into the velocity and acceleration functions

$v(44)=10(44)+5\\v(44)=445 \:\frac{ft}{s}$

$a(44)=10\: \frac{ft}{s^2}$

6 0

4 years ago

Using mean and mean absolute deviation to compare data iready quiz answers

Marizza181 [45]

The mean of a data us the addition of all numbers in the data set and then dividing them by the number of values in a set.

Your information is incomplete. Therefore, an overview will be given. It should be noted that a mean simply means the average of a set of numbers that are given.

For example, if we have the following numbers:

3, 9, 4, 1, and 3. The mean will be:

= (3 + 9 + 4 + 1 + 3)/5

= 4

The mean absolute deviation is the average distance between the data points and the mean.

Learn more about mean on:

brainly.com/question/1136789

7 0

2 years ago

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Shoot your shot! When Nick shoots a basketball, he either sinks the shot or misses. For each shot Nick sinks, he is given 5 poin

Misha Larkins [42]

Answer:

Nick sank 8 shots

Step-by-step explanation:

* Lets explain how to solve the problem

- Assume that Nick sinks x shots and misses y shots

- Nick attempts a total of 28 shots

- That means he sinks and misses 28 shots

∴ x + y = 28 ⇒ (1)

- His father give him 5 points (+5) for every sank shot and takes away

2 points (-2) for every missed shot

- That means his score calculated by adding (the number of sank shots

multiplied by 5) and (the number of missed shots multiplied by (-2))

- Nick ends up with zero points

∴ 5x + (-2)y = 0

- Remember: (+)(-) = (-)

∴ 5x - 2y = 0 ⇒ (2)

* Now we can solve the two equations by elimination method to find

the number of sank shots

- Multiply equation (1) by 2 to eliminate y

∴ 2x + 2y = 56 ⇒ (3)

- Add equations (2) and (3)

∴ 7x = 56

- Divide both sides by 7

∴ x = 8

∵ x represents the number of sank shots

∴ Nick sank 8 shots

8 0

3 years ago

Add parenthesis to the expression below. 4 + 3 x 2 - 4 ÷ 2