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3 years ago

The values StartRoot 12 EndRoot and StartRoot 15 EndRoot are plotted on the number line.

Mathematics

2 answers:

jasenka [17]3 years ago

5 0

Answer:

0.4

Step-by-step explanation: Just did the test

marissa [1.9K]3 years ago

3 0

Answer: 0.4

Step-by-step explanation: i hope this helps a shawtay out

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It is claimed that an automobile is driven on the average more than 20,000 kilometers per year. To this claim, a random sample o

Aleonysh [2.5K]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Sample mean(x) = 23500

Sample standard deviation (sd) = 3900

Sample size (n) = 20

Population mean (m) = 20,000

Null hypothesis : m = 20000

H1: m > 20000

To obtain the z-score :

(population mean - sample mean) / (sample standard deviation /√sample size)

(x - m) / (sd/√n)

(23500 - 20000) / (3900 / √20)

3500 / (3900 /4.4721359)

3500 / 872.06651

= 4.0134

Get the P value to know if to reject or accept the null:

P(z > 4.0134) = 1 - P(z < 4.0134)

P(z < 4.0134) = 1

1 - P(z < 4.0134) = 1 - 1 =0

Since P value is < alpha, we reject the null.

Hence average is > 20000

3 0

3 years ago

A rectangle has a length of 14 units and a width of 10 units. Squares of x by x units are cut out of each corner, and then the s

lesantik [10]

Answer:

∴V=(14-2x)(10-2x)x

where V is the volume of the box in cubic units.

Step-by-step explanation:

Given that,

A rectangle has a length of 14 units and width of 10 units.

4 squares with dimensions x by x units are cut out from the each corner of the rectangle.

The length of the box is= (14-2x) units

The width of the box is =(10-2x) units

The height of the box is = x unit.

The volume of the box is = Length × width×height

=(14-2x)(10-2x)x cubic units.

∴V=(14-2x)(10-2x)x

where V is the volume of the box in cubic units.

6 0

4 years ago

Pls answer this hehe

netineya [11]

Answer:

$\sf b. \triangle \\ \sf \triangle \: is \: a \: polygon$

4 0

3 years ago

Read 2 more answers

Tiffany is filling her daughter's pool with water from a hose. She can fill the pool at a rate of LaTeX: \frac{1}{5}1 5gallons/s

Hitman42 [59]

Answer:

25 seconds

Step-by-step explanation:

You have a rate of:

$\dfrac{1}{5}gal/s$

And you want to find how many seconds it would take to fill in 5 gallons of water. Using the rate, we use it as a conversion factor from rate to seconds:

$5gal\times\dfrac{1sec}{\frac{1}{5}gal}=\dfrac{5sec}{\frac{1}{5}}=25sec$

6 0

3 years ago

Express ((-x^4)+4x+87)/(x+1) in the form q(x)+((r(x)/b(x))

ryzh [129]

Answer:

$-x^3+x^2-x+5+\dfrac{82}{x+1}$

Where $q(x)=-x^3+x^2-x+5$ , $r(x)=82$ , and $b(x)=x+1$

Step-by-step explanation:

See the attached image for the long division I did to get this answer!

4 0

4 years ago