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Dennis_Churaev [7]
3 years ago
9

21 is less than a number

Mathematics
1 answer:
bezimeni [28]3 years ago
7 0
The less than sign is <, so it’s going to be 21
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A card is selected at random from a well-shuffled ordinary deck consisting of 13 spades, 13 clubs, 13 hearts, and 13 diamonds. 4
Elis [28]

Answer:

b) 0.42

Step-by-step explanation:

Let A be the event that card is a heart card and B be the event that card is a face card.

We have to find P(A or B). P(A∪B)=?

P(A∪B)=P(A)+P(B)-P(A∩B)

There are 13 heart cards and  12 cards are face cards. There would be 3 face card in hearts. So,

P(A)=13/52=1/4=0.25

P(B)=12/52=3/13=0.231

P(A∩B)=3/52=0.058

P(A∪B)=0.25+0.231-0.058

P(A∪B)=0.481-0.058

P(A∪B)=0.423

So, the probability that the card is a heart or is a face card is about is 0.42.

5 0
3 years ago
What is the slope?
V125BC [204]

Answer:

2

Step-by-step explanation:

For this I would find two friendly points like (60,10) and (70,30). Now we will plug in for the slope-intercept formula m=\frac{y_2-y_1}{x_2-x_1}.

So...

y_2=30\\y_1=10\\x_2=70\\x_1=60

Now we plug in and solve...

m=\frac{y_2-y_1}{x_2-x_1}\\m=\frac{30-10}{70-60}\\m=\frac{20}{10}\\m=\frac{2}{1}=2

So the slope will be 2.

6 0
3 years ago
Find the slope and intercepts of the line, 5x-6y=30.
soldi70 [24.7K]
The slope is 5/6.
The x-intercept is (6, 0)
The y-intercept is (0, -5)
5 0
2 years ago
The price for strawberries is currently $ 6.40 per pack. next week,strawberries will be on sale at a 20% discount. what is the t
notka56 [123]

Answer:

answer is $5.12

Step-by-step explanation:

Using the formula two and replacing the given values:

Sale Price = Original Price - Amount Saved. So,

Sale Price = 6.40 - 1.28

Sale Price = $5.12 (answer)

This means, the cost of the item to you is $5.12.

You will pay $5.12 for an item with original price of $6.40 when discounted 20%. In other words, if you buy an item at $6.40 with 20% discounts, you pay $6.40 - 1.28 = $5.12

Suppose Have you received a amazon promo code of 1.28. If the price is $6.40 what was the amount saved in percent:

3) 1.28 is what percent off $6.40?

Using the formula two and replacing the given values:

Amount Saved = Original Price x Discount % /100. So,

1.28 = 6.40 x Discount % / 100

1.28 / 6.40 = Discount % /100

100 x 1.28 / 6.40 = Discount %

128 / 6.40 = Discount %, or

Discount % = 20 (answer)

8 0
3 years ago
A student concluded that has infinitely many solutions. Which statement BEST describes the student’s conclusion?
Nastasia [14]

What's the equation?

5 0
3 years ago
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