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2 years ago

A boat traveled 27 miles in 2 hours. At this rate, how many miles will the boat travel in 1 over 2 hour?

1 answer:

4 0

In 1 hour the boat traveled :
27/2 = 13,5 miles
In 1/2 hour the boat will travel :
13,5 x 1/2 = 6,75 miles

Ok done. Thank to me:>

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3/4+?/2=13/4 what is answer

Otrada [13]

The answer is x=5.

Solve for x. (The question mark should be x.)

$\frac{3}{4}+\frac{x}{2}=\frac{13}{4}\\\frac{3}{4}+\frac{x}{2}-\frac{3}{4}=\frac{13}{4}-\frac{3}{4}\\\frac{x}{2}=\frac{5}{2}\\\frac{2x}{2}=\frac{5\times 2}{2}\\x=5$

7 0

3 years ago

you work at a magazine distribution center. this morning you processed one order for 384 magazines, a second order for 125 magaz

tino4ka555 [31]

384 + 125 + 274 = 783 magazines

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2 years ago

Read 2 more answers

Element X decays radioactively with a half-life of eight minutes. If there are 800 g of element X, how long, to the nearest 10th

Harman [31]

Answer: 41.5 min

Step-by-step explanation:

This problem can be solved with the Radioactive Half Life Formula:

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=22 g$ is the final amount of the radioactive element

$A_{o}=800 g$ is the initial amount of the radioactive element

$t$ is the time elapsed

$h=8 min$ is the half life of the radioactive element

So, we need to substitute the given values and find $t$ from (1):

$22 g=(800 g) 2^{\frac{-t}{8 min}}$ (2)

$\frac{22 g}{800 g}=2^{\frac{-t}{8 min}}$ (3)

$\frac{11}{400}=2^{\frac{-t}{8 min}}$ (4)

Applying natural logarithm in both sides:

$ln(\frac{11}{400})=ln(2^{\frac{-t}{8 min}})$ (5)

$-3.593=-\frac{t}{8 min}ln(2)$ (6)

Clearing $t$ :

$t=41.46 min \approx 41.5 min$ This is the time elapsed

7 0

3 years ago

The sum of three consecutive integers is 162 . What are the integers?

Ksivusya [100]

Answer:

53 54 55

Step-by-step explanation:

Consecutive Integers are integers that go one after the other unless explained otherwise, so 53, 54 and 55 add up to 162.

6 0

3 years ago

Read 2 more answers

Is -1/8 greater than -1/10

Alika [10]

Answer:

false

Step-by-step explanation:

-1/8 = -0.125

-1/10 = -0.100

as it is negative

-0.125 < -0.1

so it is false

8 0

3 years ago