All categories

2 years ago

if noah ran 45 minutes and john ran 6 more minutes the noah how many minutes did john run? please help

Mathematics

1 answer:

pychu [463]2 years ago

7 0

Answer:51 minutes

Step-by-step explanation:

You might be interested in

Determine the point estimate of the population proportion, the margin of error

ahrayia [7]

Answer:

$\hat p=0.645\\\\ME=0.233\\\\x=645 \ individuals$

Step-by-step explanation:

-Given the boundaries as 0.412 and 0.878

- $\hat p$ is the point estimate for the population proportion and is calculated as follows:

$\hat p=\frac{Upper \ Bound+Lower \ Bound}{2}\\\\=\frac{0.878+0.412}{2}\\\\=0.645\\\\$

#The margin of error, ME can be calculated for the confidence intervals using the formula:

$ME=\frac{Upper \ Bound-Lower \ Bound}{2}\\\\=\frac{0.878-0.412}{2}\\\\=0.233$

#The number of individuals in the sample is the product of the point estimate and population size:

$\hat p=\frac{x}{n}\\\\x=\hat pn\\\\=0.645\times 1000\\\\=645$

Hence, there are 645 individuals in the sample.

8 0

3 years ago

A box of candy bars costs $3.12. Each candy bar in the box costs $0.52. How many candy bars are in the box?

bulgar [2K]

Answer:

6 candy bards

Step-by-step explanation:

$3.12 (total)

each one is $0.52

3.12=0.52b

divide on both sides

3.12/0.52

6 candy bars

(summarized, divide 0.52 by 3.12)

3 0

3 years ago

How does the volume of an oblique cone change if the height is reduced to 2/3 of its original size and the radius is doubled

spayn [35]

The volume of oblique cone = $\frac{1}{3} \pi r^{2} h$

Now radius is doubled is now it is 2r

And height is reduced to 2/3 of its original size that is 2/3 h

So plugging the values we get volume

New Volume = $\frac{1}{3} \pi (2r)^2 (\frac{2}{3} h)$

= $\frac{1}{3} \pi 4r^2 (\frac{2}{3} h) = \frac{8}{6} \pi r^{2} h =\frac{8}{2} (\frac{1}{3} \pi r^{2} h )$ $=4*(\frac{1}{3} \pi r^{2} h )$

It means the volume becomes 4 times

3 0

3 years ago

Which expression are equivalent to 6+12x

IgorLugansk [536]

Answer:

I mean you can do 2(6x+3)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Abby wants to buy one shirt for $25 and three pairs of socks for $2 per pair. If sales tax is 8%, how much will she pay in tax?

klemol [59]

Answer:

28.52

Step-by-step explanation: you're welcome

7 0

3 years ago

Read 2 more answers