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-BARSIC- [3]
4 years ago
6

If a single card is drawn from a standard 52-card deck, in how many ways could it be a diamond or a face card (a face card is a

Jack, Queen, or King)?
Mathematics
2 answers:
nataly862011 [7]4 years ago
6 0
There are 13 diamonds, and 4*3=12 face cards, of which 3 are diamonds.
So total of "diamond or face card" is 13+12-3=22.
=> 
Probability of drawing a diamond OR a face card from a full 52-card deck is
22/52=11/26.
zhuklara [117]4 years ago
4 0

Answer:

\frac{11}{26}

Step-by-step explanation:

Total number of cards in the deck = 52

Total number of face cards = 12

Total number of diamond cards = 13

Total number of diamond face card = 3

So, total number of ways become = 12+13-3=22

These are out of 52.

Hence, it could be a diamond or a face card = \frac{22}{52}=\frac{11}{26}

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120

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90→75%

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3 years ago
A movable section of stage has the shape of an isosceles right triangle. You need to apply 2 coats of paint to all but the botto
Artemon [7]

Answer:

You need to buy 13 quarts of paint

Step-by-step explanation:

<u><em>The correct question is</em></u>

A movable section of stage has the shape of a right triangle. You need to apply 2 coats of paint (Assume you will not paint the bottom of the ramp). The paint covers approximately 80 square feet per quart. How many quarts of paint do you need to buy?

<u><em>The picture of the question in the attached figure</em></u>

step 1

we know that

The figure show a triangular prism

The surface area of the triangular prism is given by

SA=2B+PL-(14)(19.5) ----> (the area of the bottom is not included)

where

B is the area of the triangular face

P is the perimeter of the triangular face

L is the length of the prism

we have

B=\frac{1}{2}(14)(6)=42\ ft^2

P=14+6+15.2=35.2\ m

L=19.5\ ft

substitute

SA=2(42)+35.2(19.5)-(14)(19.5)=497.4\ ft^2

step 2

You need to apply 2 coats of paint

so

Multiply the surface area by 2

497.4(2)=994.8\ ft^2

step 3

Divide the total square feet by 80 square feet per quart

so

994.8/80=12.4\ quarts

Round up

You need to buy 13 quarts of paint

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3 years ago
Fraction - Multiplication : 3/4 x 1/7
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Answer:

given

3/4×1/7

=3×1/4×7

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thus the answer is 3/28

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3 years ago
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