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2 years ago

The product of a number and its _____ is one.Please fill in the blank.

Mathematics

1 answer:

asambeis [7]2 years ago

4 0

Itself should go in the blank

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In 1892, George W.G Ferris, an engineer from Illinois, designed and built the first ferris wheel. This wheel was 250 feet in dia

Fed [463]

D=2r
250=2r
250/2=r
125=r

6 0

2 years ago

A certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock exam is given at th

OlgaM077 [116]

Answer:

Interval [16.34 , 21.43]

Step-by-step explanation:

First step. Calculate the mean

$\bar X=\frac{(23+18+23+12+13+23)}{6}=18.666$

Second step. Calculate the standard deviation

$\sigma =\sqrt{\frac{(23-18.666)^2+(18-18.666)^2+(23-18.666)^2+(12-18.666)^2+(13-18.666)^2+(23-18.666)^2}{6}}$

$\sigma=\sqrt\frac{18.783+0.443+18.783+44.435+5.666+18.783}{6}$

$\sigma=\sqrt{17.815}=4.22$

As the number of data is less than 30, we must use the t-table to find the interval of confidence.

We have 6 observations, our level of confidence DF is then 6-1=5 and we want our area A to be 80% (0.08).

We must then choose t = 1.476 (see attachment)

Now, we use the formula that gives us the end points of the required interval

$\bar X \pm t\frac{\sigma}{\sqrt n}$

where n is the number of observations.

The extremes of the interval are then, rounded to the nearest hundreth, 16.34 and 21.43

6 0

2 years ago

Helppppp meeee pleassseee

dybincka [34]

I think it would be H tell me if it ain’t

4 0

2 years ago

Read 2 more answers

How do i solve x/3+10=15

yaroslaw [1]

step-by-step.

+10=15

Step 1: Simplify both sides of the equation.

x+10=15

Step 2: Subtract 10 from both sides.

x+10−10=15−10

x=5

Step 3: Multiply both sides by 3.

3*(

x)=(3)*(5)

x=15

Answer:

x=15

8 0

2 years ago

3x = 6 Help me p l e a s e

GuDViN [60]

Answer:

x=2

Step-by-step explanation:

have a nice day

3 0

2 years ago