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Mekhanik [1.2K]
3 years ago
10

A card is drawn at random from a standard deck. What is the probability that it is a black card and a king ?​

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
7 0

Answer: we know that the probability of drawing black card is 26/52. Probability of drawing a king is 4/52. when we draw a card from a pack of 52, the card could either be a black card or a king.

Step-by-step explanation:

Hope this helps you! Have a good day!

Btw Happy april fools day! :)

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Steven bought a new computer at the end of a sale. The price of the computer was $52 on the day he bought it. The next day it ha
den301095 [7]

Answer:

$72.80

Step-by-step explanation:

You would multiply 52 with .40 to get 20.8. This is how much the price increased by. Then you would add the 20.8 to your original price of 52 to get 72.80.

(Also you use .40 initially because percent means out of 100. So 40% is the same as .4)

4 0
3 years ago
Will give brainliest. Pls help. The volume of a cylinder is 300 feet^3. Find the volume of a cone and a sphere that have the sam
USPshnik [31]

Answer:

Cone: 100ft^3

Sphere: 200ft^2

Step-by-step explanation:

Firstly, the volume of a cone is 1/3 of the volume of the cylinder. It's literally in the formula:

V_{cone} = \frac{h \pi r^2}{3}\\\textrm{As you can notice, }\pi r^2\textrm{ is the area of the base, like in the cylinder formula}\\

So we can just instantly tell that the volume of the cone is 100feet^3.

Not for the sphere - we can assume that if the height is the same, it's equal to two radiuses, or simply - to the diameter. Let's use the formula for the volume of a sphere, but substitute one of the radiuses with \frac{h}{2}

V_{sphere} = \frac{4\pi r^3}{3} = \frac{2\pi r^2 h}{3} = \frac{2h\pi r^2}{3} = 2\cdot V_{cone}

So we can instantly tell that the volume of the sphere is 200feet^3

3 0
3 years ago
What is the surface area of the cylinder? Use three and fourteen-hundredths for pi and round to the nearest hundredth. Enter you
nadya68 [22]

Answer:

954.56 cm²

Step-by-step explanation:

Firstly i would calculate the circumference of the circles on top of the cylinders:

Circumference of circles = \pi d or 2\pi r

d = diameter

r = radius

I will use 2\pi r

circumference = 2 x 3.14 x 8 = 50.24 cm

⇒ This would help me to find out the surface area of the side of the cylinder

50.24 x 11 = 552.64 cm²

⇒ This is the surface are of the sides

Now we have to find the are of the two circles on the top and the bottom:

Area of a circle = \pi d^{2}

d = diameter

3.14 x 8² = 200.96

⇒ There are two circles so you would times 200.96 by 2

200.96 x 2 = 401.92

Add all the values up:

401.92 + 552.64 = 954.56 cm²

I hope this helps!

3 0
2 years ago
Eden rose?<br>How are u today?<br>I hope ur fine<br>Whats ur favorite animal?<br><br> ​
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Dude this app is for homework purposes. Not to chat with people.
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3 years ago
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Which equations would you use the subtraction property of equality to solve?
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Answer:

x minus 3 = 17, b minus 13 = 26!

Step-by-step explanation:

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3 years ago
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