3 years ago

Stella is doing her math worksheets. It takes her 1 hour 20 minutes to complete one worksheet with 12 questions.

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

7 0

that would be four hours.

12x3=36

1 hour 20 minutes x3= 4 hours

You might be interested in

Your family travels 336 miles in 6 hours.find the unit rate

mamaluj [8]

Answer:

122 po yan po dapat

Step-by-step explanation:

thanks me letter

8 0

2 years ago

Read 2 more answers

The record for the most rolls of wrapping paper sold for the school fundraiser is 593. Let w be the number of rolls of wrapping

astra-53 [7]

Answer:

w ≤ 593

Step-by-step explanation:

Missing option;

w ≥ 593

w > 593

w ≤ 593

593 < w

Explanation:

w ≥ 593 No

Number of wrapping paper sold never be more than 593.

w > 593 no

Number of wrapping paper sold never be more than 593.

w ≤ 593 yes

Number of wrapping paper sold will be equal or less than 593.

5 0

3 years ago

A motorboat travels Downstream on a river for 5 hours. The speed of the current is 2 km/h. The river flows into a still Lake and

lara [203]

Answer:

I think it is 10 km/hr

Step-by-step explanation:

5 hrs = 40 more with 2 km/hr current

2 hrs= less 40 no current

40-2x5=30

30 without current for three hours

30/3=10 km/hr no current

CHECK

10x2=20

10x5=50+2x5=60

8 0

3 years ago

If the half-life of aspirin in the bloodstream is 5 hours, how much aspirin is left in the bloodstream 12 hours after 1000 milli

Tom [10]

$\bf \textit{Amount for Exponential Decay using Half-Life} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &1000\\ t=\textit{elapsed time}\dotfill &12\\ h=\textit{half-life}\dotfill &5 \end{cases} \\\\\\ A=1000\left( \frac{1}{2} \right)^{\frac{12}{5}}\implies A\approx 1000\cdot 0.189\implies A\approx 189$

8 0

4 years ago

Elena’s bed measures 4 cm by 3 cm on the scale drawing. What are the actual measurements of her bed?

vagabundo [1.1K]

you need the ratio of the scale to find the answer.

4 0

3 years ago

Read 2 more answers