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3 years ago

Alex goes on a river boat tour while on vacation. The maximum speed of the boat in still water is 13 miles per

Mathematics

1 answer:

Anettt [7]3 years ago

5 0

Answer:

The equation to solve is

$\frac{24}{13+s}=\frac{15}{13-s}$

The rate of the current s is 3 mph

Step-by-step explanation:

Remember that

The speed is equal to divide the distance by the time

The time is equal to divide the distance by the speed

Let

s ---> the rate or speed of the current in mph

we know that

The linear equation that represent this situation is

$\frac{24}{13+s}=\frac{15}{13-s}$

solve for s

$24(13-s)=15(13+s)$

$312-24s=195+15s\\24s+15s=312-195\\39s=117\\s=3\ mph$

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The volume of the polyhedron is ______ cm3.

PSYCHO15rus [73]

Answer:

50.80 cm^3

Step-by-step explanation:

the polyhedron is a rectangular pyramid

Volume of a rectangular pyramid = 1/3 x ( width x height x length)

1/3 ( 4 x 5 x 3) = 20 inches

we need to convert inches to cm

1 in = 2.54 cm

20 x 2.54 = 50.80 cm^3

8 0

3 years ago

The circumference of circle P is 800 mm, the circumference of circle Q is 200 cm, and the circumference of circle R is 4 m. What

Lapatulllka [165]

Answer:

circle P has a circumference of 800mm which is equal to 80cm

circle Q is 200cm

circle R is 4m which is equal to 400cm

You will get the sum of the distances by placing the figures under one measurement that is meters

And so add the figures in cm(200+400+80) and get 680

Then convert this to meters and get 6.8m

Hence your answer is C

3 0

3 years ago

A card was selected at random from a standard deck of cards. The suit of the card was recorded, and then the card was put back i

cupoosta [38]

The relative frequency of selecting a diamond from 40 trials of selecting a random card is 30%.

<h3>What is relative frequency?</h3>

The relative frequency of an event is the ratio of total number of favorable or desired outcome to the total number of trails done.

Given information-

The card is selected random from the deck of cards.

Total number of trails is 40.

It is known that the total number of diamond card in a standard deck of card is 11. There is total 40 trials is done in which a random card is selected.

As the relative frequency is the ratio of total number of diamonds to the total number of trials done. Thus,

$f_r=\dfrac{11}{40}\\f_r=0.3$

In the percentage from,

$f_r={0.3}\times100\\f_r=30$

Thus the relative frequency of selecting a diamond from 40 trials of selecting a random card is 30%.

Learn more about the relative frequency here;

brainly.com/question/26177128

5 0

3 years ago

A punch recipe requires 2 cups of cranberry juice to make 3 gallons of punch.Using the same recipe,what is the amount of cranber

topjm [15]

I "believe" its 0.67 or 0.667

I might be wrong so just wait for other answers.

4 0

3 years ago

Read 2 more answers

I need help with this problem, i am confused and don't know what to do.

klasskru [66]

Problems a through c are asking you what the values would be at those values.

What will the value of $f(x)$ be at $x=0$ ? Let's look at the graph.

It seems at $x=0$ , $f(x)=0$ , meaning that $f(0)=0$

Let's do the same for the others.

At $x=-3$ , $f(-3)=2$

At $x=2$ , $f(2)=-4$

For the last question, it is giving us the $f(x)$ value and asking us which $x$ values would give us that.

At $f(x)=3$ , $x=-2$ .

*Note* this function is continuous to the right, meaning that there is another point where $f(x)=3$ .

Hope this helps.

頑張って!

3 0

4 years ago