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2 years ago

Two automobiles start together from the same place and travel along the same route. The first averages 40 miles

Mathematics

2 answers:

Rashid [163]2 years ago

6 0

Answer:

A. (55 x 5) - (40 x 5)

Step-by-step explanation:

The "speedier" car goes 55 mph * 5 hrs = 55*5 miles

The "slower" car goes 40mph * 5 hrs = 40*5 miles

The distance between them is

55 *5 - 40*5

natita [175]2 years ago

4 0

Answer:

A. (55 x 5) - (40 x 5)

Step-by-step explanation:

You are solving how much miles (further along) would the second car be after 5 hours.

The first car averages 40 miles per hour. 5 hours later, it will have averaged about 200 miles in 5 hours (40 x 5 = 200).

The second car averages 55 miles per hour. 5 hours later, it will have averaged about 275 miles in 5 hours (55 x 5 = 275)

Subtract: 275 - 200 = 75

The second car would have averaged 75 more miles than the first car.

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Given the following winning percentages of the teams in a league (for a single year) compute the within-season standard deviatio

Masja [62]

Answer:

(b) 0.251

Step-by-step explanation:

1. Standard deviation equation:

$SD=\sqrt{\frac{\sum\limits^N_i {(x_{i}-X)^{2} } }{N} }$

Where X is the mean of the data, and N the amount of data. Then, N=5

2. Estimate the Mean:

$X=\frac{0.750+0.750+0.200+0.600+0.200}{5}=\frac{2.5}{5}=0.5\\$

3. Caclulate Standard deviation:

$SD=\sqrt{\frac{{(0.750-0.500)^{2}+(0.750-0.500)^{2}+(0.200-0.500)^{2}+(0.600-0.500)^{2}+(0.200-0.500)^{2} } }{5} }$

$SD=\sqrt{\frac{0.315}{5} }=\sqrt{0.063}\\SD=0.251$

7 0

2 years ago

what measuring tool did ancient mathematics have and how do they compare to the measuring tools we have today?

german

Answer:

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Step-by-step explanation:

3 0

2 years ago

Help !!!!!! Need to know ASAP

madreJ [45]

Answer:

Multiply by 5

5*2f-5*6g=10f-30g

5 0

2 years ago

How do you convert fraction to percent

devlian [24]

Answer: dividing

Step-by-step explanation:

8 0

3 years ago

3. A prescription for an ointment has 3.5 mL of liquid menthol in a total of 220 mL. Calculate the percentage (v/v) of liquid me

Marina CMI [18]

Answer:

The percentage (V/V) of liquid menthol in the ointment is 1.59%.

Step-by-step explanation:

Given : A prescription for an ointment has 3.5 mL of liquid menthol in a total of 220 mL.

To find : Calculate the percentage (V/V) of liquid menthol in the ointment ?

Solution :

Volume of liquid menthol is $V_m= 3.5\ mL$

Total volume of ointment is $V_t= 220\ mL$

The V/V percentage is given by,

$\frac{V}{V}\%=\frac{V_m}{V_t}\times 100$

$\frac{V}{V}\%=\frac{3.5}{220}\times 100$

$\frac{V}{V}\%=0.0159\times 100$

$\frac{V}{V}\%=1.59\%$

Therefore, the percentage (V/V) of liquid menthol in the ointment is 1.59%.

8 0

3 years ago