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3 years ago

5

The set of cards shown contains both red and black cards. How many cards must be red so the probability of drawing a red card at

random is 2/5?

1 answer:

allsm [11]3 years ago

6 0

Answer:

H, 4 cards

Step-by-step explanation:

There are ten cards in the deck so you convert the fraction into tenths.

2/5 = 4/10 therefor its 4 cards

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AVprozaik [17]

The discount is 50-14 = $36

% discount = (36/50)*100 = 72%

6 0

3 years ago

What is the volume of a right circular cone if the circumference of the base is 125.6 ft and the height is 75 ft.? Use π=3.14 an

Alex_Xolod [135]

Answer:

The volume of a right circular cone is $31400\ \text{feet}^3$ .

Step-by-step explanation:

The circumference of the base of a right circular cone is 125.6 ft.

Height of cone is 75 ft.

Circumference of base is :

$C=2\pi r$ , r is radius

$r=\dfrac{C}{2\pi}\\\\r=\dfrac{125.6}{2\times 3.14}\\\\r=20\ ft$

The volume of a cone is given by :

$V=\dfrac{1}{3}\pi r^2 h\\\\V=\dfrac{1}{3}\times 3.14\times (20)^2\times 75\\\\V=31400\ \text{feet}^3$

So, the volume of a right circular cone is $31400\ \text{feet}^3$ .

5 0

3 years ago

Chose all the values of x that are not in the domain of this rational function. Picture attached, 15 points and I'll give Brainl

pogonyaev

Answer:

All of them.

Step-by-step explanation:

For rational functions, the domain is all real numbers <em>except</em> for the zeros of the denominator.

Therefore, to find the x-values that are not in the domain, we need to solve for the zeros of the denominator. Therefore, set the denominator to zero:

$x(x-1)(x^2-4)=0$

Zero Product Property:

$x\neq 0\text{ or }x-1\neq 0\text{ or }x^2-4\neq 0$

Solve for the x in each of the three equations. The first one is already solved. Thus:

$x-1\neq 0 \text{ or }x^2-4\neq 0\\x\neq 1\text{ or }x^2\neq 4\\x\neq 1 \text{ or }x\neq\pm 2$

Thus, the values that <em>cannot</em> be in the domain of the rational function is:

$x=-2,0,1,2$

Click all the options.

6 0

3 years ago

Read 2 more answers

Select the correct answer.

Drupady [299]

Answer: A

Step-by-step explanation:

because i did a quiz with the same and i got it right

8 0

3 years ago

The distance between major cracks in a highway follows an exponential distribution with a mean of four miles. (a) what is the st

Lesechka [4]

For an exponential distribution, the standard deviation is equal to the mean.

(a) the standard deviation is 4 miles.

7 0

3 years ago