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3 years ago

Find the value of x in the triangle

Mathematics

2 answers:

AURORKA [14]3 years ago

8 0

Cos38 = 7,8/x
X= 7,8/cos38
= 9,90

ipn [44]3 years ago

7 0

9.898, or rounded to 9.90

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Combine like terms to simplify the expression below. 5y - 8x - y + 12y

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Answer:

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2 years ago

0.045x10° in scientific notation is A)4.5x 10 B) 4.5x 10- C) 4.5x 104 D) 4.5x10

bixtya [17]

The answer in scientific notation is 4.5x10^-2

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2 years ago

a furniture store is having a sale on sofas and you're going to buy one. the advertisers know that buyers get to the store and t

Semenov [28]

If a advertised sofa is $200 but the more costly sofa is $375, the average cost of such a sofa will be $200 is $243.75.

<h3>Define the term average of the number?</h3>

An averaging is a single number calculated as the average of a set of numbers,.
Typically calculated as the sum of a numbers divided by the total number of numbers in the set (the arithmetic mean).

You're planning to purchase a sofa from a furniture store that is having a sale on them.

Let x represent the sofa's price.

Advertised sofa's cost = $200

Expensive sofa's cost = $375

The advertisers are aware that when customers arrive at the store, one out of three switch to an expensive sofa that the one shown in the sale advertisement.

Average cost = 375 x 1/4 + 200 x 3/4

E(x) = 375 x 1/4 + 200 x 3/4

E(x) = 93.75 + 150

E(x) = 243.75

Thus, if a advertised sofa is $200 but the more costly sofa is $375, the average cost of such a sofa will be $200 is $243.75.

To know more about the mean average , here

brainly.com/question/20118982

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4 0

1 year ago

Which phrase best describes the translation from the graph y=(x-5)+7 to the graph of y=(x+1)^2-2

Arte-miy333 [17]

Y equals a number minus 5 add 77 to the graph of y equals x minus 1 squared minus 2

8 0

3 years ago

Read 2 more answers

The Colossus Ferris wheel debuted at the 1984 New Orleans World’s Fair. The ride is 180 ft tall, and passengers board the ride a

nignag [31]

Answer:

See below

Step-by-step explanation:

Problem 1

For the function $f(x)=a*cos(bx+c)+d$ , the period is $\frac{2\pi}{|b|}$ . In the context of this problem, the period is $\frac{2\pi}{|3\pi|}=\frac{2}{3}$ . This means that after every $\frac{2}{3}$ minutes, the height of the passenger will be the same, which shows they have completed one loop of the Ferris wheel.

Problem 2A

Since the ride took 15 minutes and 1 loop takes $\frac{2}{3}$ minutes, then the number of loops made during the ride is $15\div\frac{2}{3}=\frac{45}{2}=22\frac{1}{2}$ loops.

Problem 2B

Plug $t=15$ into the function to determine the height of the passenger after 15 minutes:

$h= -82.5*cos(3\pi t)+97.5$

$h= -82.5*cos(3\pi(15))+97.5$

$h= -82.5*cos(45\pi)+97.5$

$h= -82.5*(-1)+97.5$

$h=82.5+97.5$

$h=180$

Therefore, the height of the passenger after 15 minutes is 180 feet above the ground.

Problem 3A

Plug $t=6$ into the function to determine the height of the last passenger after 6 minutes when the power outage occurs:

$h= -82.5*cos(3\pi t)+97.5$

$h= -82.5*cos(3\pi(6))+97.5$

$h= -82.5*cos(18\pi)+97.5$

$h= -82.5*(1)+97.5$

$h=-82.5+97.5$

$h=15$

Therefore, the last passenger is 15 feet above the ground after 6 minutes when the power outage occurs.

Problem 3B

The last passenger to board the ride won't need to wait in order to exit the ride because they are at the lowest point of the ride which is 15 feet above the ground. Therefore, they can get off immediately then.

4 0

2 years ago