All categories

4 years ago

At what position on the number line is the red dot located?

Mathematics

2 answers:

Naddika [18.5K]4 years ago

8 0

The answer would be d. √13 (square root of thirteen)

i hope this helps!!

AleksandrR [38]4 years ago

6 0

The answer should be D. the sqrt of 13

You might be interested in

Lol I need help with this one too

dsp73

Answer: 7.3

Step-by-step explanation:

The square root of 53 is 7.28010988928, and if you round that number to the nearest tenth it is 7.3.

3 0

3 years ago

The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally distributed with standard deviation 0.

Klio2033 [76]

Answer:

1. the probability that giraffe will be shorter than 17 feet tall is equal to 0.1056

2. the probability that a randomly selected giraffe will be between 16 and 19 feet tall is equal to 0.8882

3. the the 90th percentile for the height of giraffes is 19.024

Step-by-step explanation:

To calculate the probability that a giraffe will be shorter than 17 feet tall, we need to standardize 17 feet as:

$z=\frac{x-m}{s}$

Where x is the height of the adult giraffe, m is the mean and s is the standard deviation, so 17 feet is equivalent to:

$z=\frac{17-18}{0.8}=-1.25$

Now, the probability that giraffe will be shorter than 17 feet tall is equal to P(z<-1.25). Then, using the standard normal distribution table, we get that:

$P(z$

At the same way, 16 and 19 feet tall are equivalent to:

$z=\frac{16-18}{0.8}=-2.5\\z=\frac{19-18}{0.8}=1.25$

So, the probability that a randomly selected giraffe will be between 16 and 19 feet tall is equal to:

$P(-2.5$

Finally, to find the the 90th percentile for the height of giraffes, we need to find the value z that satisfy:

$P(Z$

Now, using the standard normal distribution table we get that z is equal to 1.28. Therefore, the height x of the giraffes that is equivalent to 1.28 is:

$z=\frac{x-m}{s} \\1.28=\frac{x-18}{0.8} \\x=(1.28*0.8)+18\\x=19.024$

it means that the the 90th percentile for the height of giraffes is 19.024

4 0

3 years ago

Yo I’m timed so real quick what is the value of (-1/2) to the -4th power.

yuradex [85]

Step-by-step explanation:

Just expand it:

$-\frac{1}{2} *-\frac{1}{2}*-\frac{1}{2}*-\frac{1}{2}=\frac{1}{16}$

3 0

3 years ago

Read 2 more answers

R(r1+r2)=r1r2 solve for R

romanna [79]

We need to solve for R, This is really simple.

The original expression is:
R (r1 + r2) = r1r2

To solve for a certain variable, we need to get this variable alone on one side of the equation and equate it with the other side.

In the given expression, to get R alone on one side we have to eliminate (r1 + r2).
In order to do this, we will divide both sides by (r1 + r2).
Doing this, we get the solution as follows:
R = (r1r2) / (r1 + r2)

4 0

3 years ago

Read 2 more answers

Meyer restocks on toilet paper Sunday they get 800 rolls. They are open Monday through Sunday 8am to 10pm. They sell 16 rolls pe

ohaa [14]

Remember 800 because that’s your big number / most important.

So they’re open from 8am - 10pm. They’re open for 14 hours a day and they sell 16 rolls per hour.
If one hour is 16 rolls sold , then what is 14?
16 x 14 hours (16 x 14 = 224)
In a whole day they sell 224 rolls.
Monday: 800 rolls - 224 rolls = 576 rolls
Tuesday: 576 rolls - 224 rolls = 352 rolls
Wednesday: 352 rolls - 224 rolls = 128
By Thursday they won’t be able to sell more than 224 because there is only 128 rolls left that will be sold out in 8 hours on that day.
So they will be sold out completely by THURSDAY.
The best time to go to the store is most likely on a Tuesday around 12-1pm

4 0

3 years ago