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2 years ago

A truck driver always drives 3 miles per hour. She drives for 5 hours each day. How many miles will she drive in 3 days?

Mathematics

1 answer:

nata0808 [166]2 years ago

5 0

Answer:

45 miles in 3 days

Step-by-step explanation:

if she drives 3 miles an hour for 5 hours a day that would be 3x5=15

15x3 days=45 miles in 3 days

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When Julio cracked open his piggy bank, he

jok3333 [9.3K]

Answer:

52 quarters, 42 dimes

Step-by-step explanation:

Let's call the number of quarters q, and the number of dimes d.

q+d=94

0.25q+0.1d=17.20

Subtract q from both sides of the first equation to isolate d:

d=94-q

0.25q+0.1(94-q)=17.20

0.25q+9.4-0.1q=17.20

0.15q=7.8

q=52

d=94-q=42

Hope this helps!

5 0

3 years ago

Help please :)))))))))))))

natali 33 [55]

Answer:

D is the correct answer

if you want explanation you can comment down

6 0

2 years ago

Luke can buy bottles of water in packages of 6 for $15.24 or in packages of 4 for $11.16. How much money does he save by buying

creativ13 [48]

Answer:

$6\ for\ \$15.24\ is\ better\ price\\\\Total\ saving=\$12$

Step-by-step explanation:

Cost at the rate 6 for $15.24:

Cost of $6$ bottles $=\$15.24$

Cost of $1$ bottle $=\$\frac{15.24}{6}$

Cost of $48$ bottles $=\frac{15.24}{6}\times 48=15.24\times 8=\$121.92$

Cost at the rate 4 for $11.16:

Cost of $4$ bottles $=\$11.16$

Cost of $1$ bottle $=\frac{11.16}{4}$

Cost of $48$ bottles $=\frac{11.16}{4}\times 48=11.16\times 12=\$133.92$

Hence $6\ bottles\ for\ 15.24$ is less expensive.

Total saving $=133.92-121.92=\$12$

6 0

3 years ago

An element with mass 730 grams decays by 27.6% per minute. How much of the element is remaining after 12 minutes, to the nearest

Korolek [52]

$\bf \qquad \textit{Amount for Exponential Decay}\\\\
A=I(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
I=\textit{initial amount}\to &730\\
r=rate\to 27.6\%\to \frac{27.6}{100}\to &0.276\\
t=\textit{elapsed time}\to &12\\
\end{cases}
\\\\\\
A=730(1-0.276)^{12}\implies A=730(0.724)^{12}$