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2 years ago

If you draw one card from a standard deck, what is the probability that you draw a king or queen?

Mathematics

2 answers:

ivolga24 [154]2 years ago

6 0

Answer:

The answer is B

Step-by-step explanation:

The answer is B because To find the probability we use the mutually exclusive probability formula P(A) + P(B). The probability of picking a king is [1/13]] and the probability of picking a queen is

1 /13.

The sum is 2 /13

Scorpion4ik [409]2 years ago

4 0

A because there isn't a lot of cards in the deck

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Elena L [17]

Answer:

502.4 mm^2

Step-by-step explanation:

First find the area of the larger circle, and then that of the smaller one.

Then subtract the latter (2nd) area from the first.

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------------------------- ---------------------------

3.14(14 mm)^2 3.14(6 mm)^ 2

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2 years ago

If a cannonball is shot directly upward with a velocity of 160 ft per second, its height above the ground after t seconds is gi

Contact [7]

Step-by-step explanation:

If a cannonball is shot directly upward with a velocity of 160 ft per second. Its height as a function of time is given by :

$h(t)=160t-16t^2$ .......(1)

t is in seconds

(a) Velocity is given by :

$v=\dfrac{dh}{dt}\\\\v=\dfrac{d(160t-16t^2)}{dt}\\\\v=(160-32t)\ ft/s$

Acceleration is given by :

$a=\dfrac{dv}{dt}\\\\a=\dfrac{d(160-32t)}{dt}\\\\a=-32\ ft/s^2$

(b) For maximum height put $\dfrac{dh}{dt}=0$

i.e.

$160-32t=0\\\\t=5\ s$

Put t = 5 s in equation (1). So,

$h(5)=160t-16t^2\\\\h(5)=160(5)-16(5)^2\\\\h(5)=400\ ft$

h(t) = 0

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2 years ago

What ratio is equivalent to 4 : 28

klasskru [66]

Answer:

2 : 14

Step-by-step explanation:

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3 years ago

Read 2 more answers

If x = 45, y = 63, and the measure of AC = 4 units, what is the difference in length between segments AB and AD? Round your answ

brilliants [131]

Answer:

1.17 units

Step-by-step explanation:

From the definition of the sine of an angle, you know ...

sin(45°) = AC/AB = 4/AB ⇒ AB = 4/sin(45°) ≈ 5.6569

sin(63°) = AC/AD = 4/AD ⇒ AD = 4/sin(63°) ≈ 4.4893

Then the difference AB-AD is ...

AB -AD = 5.6569 -4.4893 = 1.1676

AB -AD ≈ 1.17 units

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2 years ago