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miss Akunina [59]
2 years ago
7

Simplify: 3n3−4n+3n+6n3=−3

Mathematics
2 answers:
gizmo_the_mogwai [7]2 years ago
8 0

Answer:

See below.

Step-by-step explanation:

3n³-4n+3n+6n³=-3

9n³-n=-3

So the answer is C.

-hope it helps

sineoko [7]2 years ago
8 0
-6n3 I’m pretty sure
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If there are 1,200 calories in 8 oz of hot fudge, how many calories are in 1,500 men, how many women are there?
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7. On Thursday, Kim purchased a medium iced caramel latte and a blueberry muffin for $5.18. Then, on Friday, Kim
sashaice [31]

Answer:

Cost of medium iced caramel latte = $3.59

Step-by-step explanation:

Assume;

Cost of medium iced caramel latte = x

Cost of blueberry muffin = y

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On Thursday

x + y = 5.18......eq1

On Friday

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Eq1 × 3

3x + 3y = 15.54......eq3

eq3 - eq2

x = 3.59

Cost of medium iced caramel latte = $3.59

4 0
3 years ago
what is the probability of seeing a sample mean for 21 observations less or equal to the sample mean that we observed
kramer

Answer:

P(x \le 21) = 0.69146

Step-by-step explanation:

The missing parameters are:

n = 64 --- population

\mu = 20 --- population mean

\sigma = 16 -- population standard deviation

Required

P(x \le 21)

First, calculate the sample standard deviation

\sigma_x = \frac{\sigma}{\sqrt n}

\sigma_x = \frac{16}{\sqrt {64}}

\sigma_x = \frac{16}{8}

\sigma_x = 2

Next, calculate the sample mean \bar_x

\bar x = \mu

So:

\bar x = 20

So, we have:

\sigma_x = 2

\bar x = 20

x = 21

Calculate the z score

x = \frac{x - \mu}{\sigma}

x = \frac{21 - 20}{2}

x = \frac{1}{2}

x = 0.50

So, we have:

P(x \le 21) = P(z \le 0.50)

From the z table

P(z \le 0.50) = 0.69146

So:

P(x \le 21) = 0.69146

4 0
3 years ago
A cone has a height of 19 yards and a radius of 7 yards. What is its volume
Tanya [424]

Answer:

Step-by-step explanation:

h= 19 yards, r=7yards, v=?,Π= 3.14

Vol. Of a cone = 1/3×h×Π×r²

V= 1/3×19×3.14×7²

V= 2923.34/3

V=974.45

To the nearest hundredth

V=974cm³

5 0
3 years ago
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