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3 years ago

What is the exponent form of -6•6•6

Mathematics

1 answer:

denis23 [38]3 years ago

4 0

Answer:

$-6\cdot6\cdot6=-\underbrace{6\cdot6\cdot6}_{3}=-6^3$

Step-by-step explanation:

$a^n=\underbrace{a\cdot a\cdot a\cdot a\cdot ...\cdot a}_{n}$

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A consumer group selected 100 different airplanes at random from each of two large airlines. The mean seat width for the 100 air

Novay_Z [31]

Answer:

Decreasing the sample size decreases the width of the confidence interval.

Step-by-step explanation:

-Let s be the sample standard deviation and $\bar X$ be the sample mean.

#We calculate the 95% confidence interval for the sample size 100 as below:

$\bar X\pm z_{0.05/2}\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm 1.960\times\frac{s}{\sqrt{50}}\\\\\\=\bar X\pm 0.1960s$

#we then calculate the confidence interval of sample size =50 and of similar mean and standard deviation:

$\bar X\pm z\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm z_{0.05/2}\times\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm1.960\times \frac{s}{\sqrt{50}}\\\\\\\\=\bar X\pm0.2772s$

#Notice that the smaller sample(n=50) has a narrower confidence interval.

Hence, decreasing the sample size decreases the width of the confidence interval.

6 0

3 years ago

Read 2 more answers

The length of a rectangle is 4 m more than the width the area of the rectangle is 45m^2 find the length and width

Novay_Z [31]

L=w+4m
A=w*l
A=w(w+4)=45
w^2+4w-45=0
w^2+9w-5w-45=0
w(w+9)-5(w+9)=0
(w+9)(w-5)=0

⇒ w+9=0 or w-5=0
⇒w-5=0
w=5
l=5+4
l=9

5 0

4 years ago

A gymnastics coach likes her team to stretch 5 minutes for every 10 minutes of strength training. How many minutes should the te

Setler [38]

They shoud strech for 25 minutes.

7 0

3 years ago

Pablo goes to the grocery store every 2 days, and Wanda goes to the grocery store every 3 days. If they both went to the grocery

Talja [164]

Answer:

6 more days till they both go to the store at the same day

5 0

3 years ago

Find the value of x.

SVETLANKA909090 [29]

9514 1404 393

Answer:

103

Step-by-step explanation:

The sum of angles in a quadrilateral is 360°, so the measure of x° is ...

x° = 360° -127° -90° -40° = 103°

x = 103

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3 years ago

Read 2 more answers