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3 years ago

If cos 0=sin b then which of the following must be true?

Mathematics

1 answer:

miv72 [106K]3 years ago

7 0

Rgtef erggreedg wrrevgerv erevt

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A certain ferry moves up and down a river between Town A and

Blizzard [7]

Answer: 60 miles

Step-by-step explanation:

Given

It takes ferry 2 hours to travel to town A and only $1.5\ hr$ to travel back to town B.

Speed of current is $u=5\ mph$

Suppose the speed of the ferry is $v$ mph

Distance traveled in both the cases is same, but it took more time traveling to city A that is, ferry is moving upstream and downstream for returning time.

$\Rightarrow 2(v-5)=1.5(v+5)\\\Rightarrow 2v-10=1.5v+7.5\\\Rightarrow 0.5v=17.5\\\Rightarrow v=35\ mph$

Distance between the towns is $2\times (35-5)=60\ \text{miles}$

5 0

2 years ago

Read 2 more answers

Draw a number line and mark all described points on it.

enot [183]

Answer:

<em>See attached</em>

<u>Numbers are either negative or greater tan 5:</u>

x < 0 and x > 5
or
x = (-∞, 0) ∪ (5, +∞)

7 0

2 years ago

Read 2 more answers

Can someone please help me out

Paha777 [63]

Answer:

D. 20.

Step-by-step explanation:

-17 - -37 = 20.

These are all of the steps, to completely, get the correct answer to this question.

Hope this helps!!!

Kyle.

8 0

2 years ago

The replica of the Empire State Building with its antenna spire in Las Vegas is

postnew [5]

Answer: $\frac{485}{ 1,454}$

Step-by-step explanation:

For this exercuse you need to analize the information provided. You know that:

1) The height of the replica of the Empire State Building with its antenna spire in Las Vegas is 485 feet.

2) The height of the real Empire State building is 1,454 feet.

Finally, in order to find the ratio of height of the replica to the height of the real Empire State building, its necessary to divide the height of the replica of the Empire State Building by the height of the real Empire State building.

Therefore, trough this procedure you get that the ratio of height of the replica to the height of the real Empire State building is:

$ratio=\frac{heigth_{ replica}}{heigth_{real}}=\frac{485}{ 1,454}$

(This fraction cannot be reduced)

3 0

2 years ago

PLEASE HELP!!!! Which quadratic equation is part of the solution process for solving this rational equation using the least comm

Nadya [2.5K]

Step-by-step explanation:

A. x²-x-10=0

is part of the solution process for solving this rational equation using the least common denominator

4 0

2 years ago