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3 years ago

The number of minutes Pam talked on the phone was 35, 40, 12, 16, What was the average time Pam was on the phone

Mathematics

1 answer:

Fudgin [204]3 years ago

8 0

Answer:

Step-by-step explanation:

(35 + 40 + 12 + 16) : 4

= (75 + 28) : 4

= 103 : 4

= 25,75

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Write this multiplication expression using an exponent: 2 . 2 . 2 = ?

S_A_V [24]

Answer:2^3

Step-by-step explanation:

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3 years ago

Tyler and Pearl went on a 20km bike ride that lasted for 3 hours. Because of steep hills or the trail, they walked for most of t

noname [10]

Answer: 1 hour

Step-by-step explanation:

Let the distance they walked be $d_1$ in time $t_1$ and the distance they walked be $d_2$ in time $t_2$ ,then

Walking speed= $\frac{d_1}{t_1}=4$

$\\\Rightarrow\ d_1=4t_1$

Riding speed= $\frac{d_2}{t_2}=12$

$\\\Rightarrow\ d_2=12t_1$

Also the total time taken=3 hours

∴ $t_1+t_2=3\\\Rightarrow\ t_2=3-t_1$ ...(1)

Since the total distance= 20 km

∴ $d_1+d_2=20\\\Rightarrow4t_1+12t_2=20\\\Rightarrow4t_1+12(3-t_1)=20..............[\text{from (1)}]\\\Rightarrow4t_1+36-12t_1=20\\\Rightarrow-8t_1=-8\\\Rightarrow\ t_1=1$

Thus, the they spent 1 hour time in walking.

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3 years ago

Matt is running in a 9 mile race over

iren2701 [21]

Answer:54 minutes

Step-by-step explanation:

9 x 5 = 45 then 45+ the.1 minute from each mile so it would be 9 +45 = 54 minutes

4 0

3 years ago

Write the expression 2 3/5 as a radical.

BARSIC [14]

$a^{\frac{m}{n}} = \sqrt[n]{a^m}$

$2^{\frac{3}{5}} = \sqrt[5]{2^3}$

Answer is option D.

5 0

3 years ago

Read 2 more answers

I need help PLEASE help mee

EastWind [94]

Answer:

Step-by-step explanation:

In order to convert 0.0004578, which is in decimal, to scientific notation, all we need to do in this case is to move our decimal point to the right till we arrive at the first number that is not a zero, and then eliminate all the zero.

In this case, we will have to move the decimal point 4 spaces to our right, which would mean our exponent would be negative. The number of decimal spaces we moved to our right would be the value of our exponent, which is -4 in this case.

Thus, we have:

$4.578 * 10^{-4}$

6 0

4 years ago