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3 years ago

Tony drove 605 miles in 11 hours At the same rate how many miles would he drive in 7 hours

Mathematics

2 answers:

Vitek1552 [10]3 years ago

7 0

Answer:

He drive for 385 miles

Step-by-step explanation:

11hrs = 605 miles

1hr = 55 miles

7hr = 55 × 7

= 385 miles

lana66690 [7]3 years ago

4 0

Answer:

385 miles

Step-by-step explanation:

tony is going 55 mph which means he will travel 385 miles

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The following are weights in pounds of a college sports team: 165, 171, 174, 180, 182, 188, 189, 192, 198, 202, 202, 225, 228, 2

babunello [35]

Answer:

There are no values in the data that is two standard deviations below the mean.

Step-by-step explanation:

We are given the following data set in question:

165, 171, 174, 180, 182, 188, 189, 192, 198, 202, 202, 225, 228, 235, 240

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{2971}{15} = 198.06$

The mean of sample is 198.06 pounds.

Sum of squares of differences = 7984.93

$S.D = \sqrt{\dfrac{7984.93}{14}} = 23.88$

The sample standard deviation is 23.88 pounds.

We have to find the weight that is 2 standard deviations below the mean.

$x < \bar{x}- 2s\\x < 198.06 -2(23.88)\\x < 150.3$

Thus, we have to find a value less than 150.3.

Sorted data: 165, 171, 174, 180, 182, 188, 189, 192, 198, 202, 202, 225, 228, 235, 240

There are no values in the data that is less than 150.3

4 0

4 years ago

Select all the values that are equivalent to the given expression. Express your answer in scientific notation.

Anna35 [415]

Answer:

the first and last ones

Step-by-step explanation:

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Chuge%5Cbold%5Cred%7B%7BHELP%7D%7D" id="TexFormula1" title="\huge\bold\red{{HELP}}" alt="\hu

Travka [436]

$\\ \sf\longmapsto \sqrt{512x^3}=\sqrt{2\times 2\times 2\times 2\times 2\times 2\times 2\times 2x^2x}=16x$
$\\ \sf\longmapsto x-8=-5\implies x=3$
$\\ \sf\longmapsto \sqrt{x-8}=\sqrt{-x+2}\implies x-8=-x+2\implies 2x=10\implies x=5$

6 0

3 years ago

Bruce walks 2/3mile in 1 .4hour. What is his speed in miles per hour? Show your work.

insens350 [35]

Answer:

10/21 or 0.476 miles per hour

Step-by-step explanation:

If you divide 2/3 by 1.4 (or 14/10), you will get miles per hour.

2/3 ÷ 14/10 = 2/3 x 10/14 = 20/42 = 10/21 = 0.476

4 0

4 years ago

Explain the steps for converting a terminating decimal into a rational number (fraction). Use the decimal 0.25 to provide an exa

forsale [732]

Terminating decimal
rmember that all numbers can be put over 1 and that is a fraction
ex
1/1=x
3/1=3
π/1=π

so therefor
0.25=0.25/1
if yo want to make the top number equal a whole number
multiply top and bottom by 100 to move 0.25 two decimal places to the right to make it ahwole number

0.25/1 times 100/100=25/100=1/4
answer is 1/4

steps:
1. find how many decimal placees the number goes to (ex. 0.25=2 places 0.2=1 place, 0.2345=4 places)
2. put the decimal over 1 (so if the decimal is x then do x/1)
3. find a fraction that is 10/10 such that the number of zeros one the top should be equal to the zeroes on the bottom, the number of zeros on the top should be equal to the number of decimal places from step 1
4. multiply the fraction (x/1) from step 2 by the fraction from step 3
5. simplify the resulting fraction

6 0

3 years ago