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3 years ago

7

I don't really know how to answer the questions can you help me plz

2 answers:

Fiesta28 [93]3 years ago

8 0

The workers paved at a rate of 2/15 miles per 20 minutes. Now, we need to figure out how far they went in 60 minutes. Since 60 minutes is three times as large as 20 minutes, they will go three times as far. This is equal to 6/15 miles in one hour.

Now, we need to simplify the fraction. We do this by dividing both the numerator and denominator by 3. This equals 2/5. So, in one hour, the workers paved 2/5 of a mile.

Stella [2.4K]3 years ago

3 0

60 divides by 20 is 3. So 3 times 2/15 equals 2/5 already simplified.

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Calculate the average speed (tin km/hr) of charlie who run to the store 4 km away in 30 minutes

Galina-37 [17]

ANSWER

$8km/hr$

EXPLANATION

The average speed

$= \frac{distance}{time}$

Distance=4km

Time=30mins

Convert time to hours.

Time =0.5hrs

The average speed

$= \frac{4}{0.5}$

$= 8km/hr$

8 0

3 years ago

PLS Help me Error Analysis

Maksim231197 [3]

we have

<u>Pieces of mail delivered in December by the US postal service</u>

$7.14*10^{10}$

<u>Pieces of mail delivered in January by the US postal service</u>

$3.21*10^{10}$

To find the total mail delivered for these two months, sum the two quantities

so

$7.14*10^{10}+3.21*10^{10}=(7.14+3.21)*10^{10}\\=10.35*10^{10} \\=(1.035*10)*10^{10} \\=1.035*(10* 10^{10})\\=1.035*10^{(10+1)} \\= 1.035*10^{11}$

therefore

the correct solution is $1.035*10^{11}$

the error is in this part

$10.35*10^{10}$

To move decimal over one place 10 to the power of 10 should be 10 to the power of 11

$1.035*10^{10}$

3 0

3 years ago

Explain why the 25 is rational and the square root of 26 is irrational

torisob [31]

Step-by-step explanation:

rational expression can be written as a ratio and all neutral numbers xan be written as a ratio

root of 26 is irrational because it can't be written as a ratio since its not a whole number.

6 0

3 years ago

Mrs. Cooper has $20 can she buy a museum tickets for 10 year old daughter a ticket for a self and a book that cost 3.99? Explain

Sladkaya [172]

No, because then she would have to pay 21 dollars as a total and she only has 20.

Add adult plus Child,

5.75 + 11.25 = 17

add that to the book's price,

17+3.99= 2.99

it will exceed the budget by 99 cents.

7 0

3 years ago

The number of international tourist arrivals in Russia in 2012 was 13.5% greater than in 2011. The number of international touri

Bess [88]

The value of k to the nearest integer is 21

Let the number of international tourist arrivals in Russia in 2011 be k

If the number of international tourist arrivals in Russia in 2012 was 13.5% greater than in 2011 will be expressed as:

k = 24.7 - (13% of 24.7)

k = 24.7 - (0.135 * 24.7)

k = 24.7 - 3.3345

k = 21.3655

Hence the value of k to the nearest integer is 21

Learn more on decrement here: brainly.com/question/24304697

8 0

3 years ago