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4 years ago

What is the value of y?

Mathematics

1 answer:

Arlecino [84]4 years ago

6 0

Y Could be any number. Like

<em>Y x 5 = 10 The answer is 2</em> because <u>10 / 5 = 2</u>

<em>But Y could be 10 in Y x 2 = 20</em>

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A clothing store has just advertised at a bargain price, that a customer tries on a t-shirt is 0.40. a new range of t-shirts. Th

AlexFokin [52]

<h2>Answer:</h2>

The probability that the customer did not try on the t- shirt is:

0.2432

<h2>Step-by-step explanation:</h2>

It is given that the probability that a customer tries a t-shirt is: 0.40

After he will try

The probability that he will buy the t-shirt is: 0.70

The probability that he will not try t-shirt is: 1-0.40=0.60

If he will not try

then the probability of buying a t-shirt is: 0.15

This means that the total probability of Buying a t-shirt is:

0.40×0.70+0.60×0.15

= 0.37

It is given that the customer bought a t-shirt, we need to find the probability that he did not try the t-shirt:

The probability is given by:

$\dfrac{0.60\times 0.15}{0.37}\\\\\\=\dfrac{0.09}{0.37}\\\\\\=0.2432$

4 0

3 years ago

Y is directly proportional ( x+2)² <br> when x = 8 y= 250 <br> find y when x = 4

sladkih [1.3K]

Answer:

y=90 when x=4

Step-by-step explanation:

We are given that

$y\propto (x+2)^2$

When x=8 and y=250

We have to find the value of y when x=4

$y=k(x+2)^2$

Where k= Proportionality constant

Substitute the values

$250=k(8+2)^2$

$250=100k$

$k=\frac{250}{100}$

$k=5/2$

Now, substitute x=4 and k=5/2

Then, we get

$y=\frac{5}{2}(4+2)^2$

$y=\frac{5}{2}\times 36$

$y=90$

8 0

3 years ago

Find the measure of the indicated angle to the nearest degree.<br> 8<br> 22<br> ?

Blizzard [7]

Answer:

21 degrees

Step-by-step explanation:

To find this, we are going to use the appropriate trigonometric ratio

The right angle faces the length 22 which is the hypotenuse

The marked angle faces the length 8 which makes it the opposite

The trigonometric ratio that links the two is the sine

The sine is the ratio of the opposite to the hypotenuse

So, we have it that;

sine ? = 8/22

? = arc sine 8/22

? = 21 degrees

4 0

3 years ago

The distance between two cities is 145 miles. A truck can cover this distance in 2.5 hours. A car is 1.5 times as fast as the tr

Sunny_sXe [5.5K]

Answer:

1 hour

Step-by-step explanation:

The speed ratio is ...

... truck : car = 1 : 1.5

Then the ratio of truck speed to the sum of their speeds is ...

... truck : combined = 1 : (1+1.5) = 1 : 2.5

Since time is inversely proportional to speed, the two vehicles will meet after 1/2.5 times the time the truck takes to cover the distance. That is ...

... (2.5 hours)/2.5 = 1 hour

_____

The truck speed is 145 mi/(2.5 h) = 58 mi/h.

The car speed is 1.5 × 58 mi/h = 87 mi/h.

Their combined speed is 58 + 87 = 145 . . . . mi/h.

So, they will cover the 145 mile distance in 1 hour.

3 0

3 years ago

Read 2 more answers

Hannah wants to simulate whether customers will choose a small, medium, or large drink, or no drink at a fast food restaurant.

Lemur [1.5K]

Answer:

d. Some customers had more than one drink.

Step-by-step explanation:

The exact question is as follows :

Given - Hannah wants to simulate whether customers will choose a small, medium, or large drink, or no drink at a fast food restaurant. She decides to use digits from a random number table to represent the drink option a customer will order (0=no drink, 1=small drink, 2=medium drink, 3=large drink, ignore digits 4-9)

To find - Why does this NOT model the situation?

a. The choices are not equally likely to occur.

b. Some of the digits were ignored.

c. The choice are independent of each other.

d. Some customers had more than one drink.

Solution -

The correct option is - d. Some customers had more than one drink.

Reason -

If Customer order more than one drink, then also he has to order either of the digits.

So, Hannah can not be sure about the order that he wants single order or wants to repeat the order.

3 0

3 years ago