Ask question

Ask question

All categories

3 years ago

12

I NEED HELP PLEASE, THANKS! :)

1 answer:

cluponka [151]3 years ago

3 0

Answer:

standard deck has 52 cards. probability of king is 4/52 and probability of a queen is 4/52, so 4/52 + 4/52 = 8/52=2/13

Step-by-step explanation:

You might be interested in

I need some help on this question I don’t understand it that well.

bearhunter [10]

Answer:

the left hand side is equals to |13| which is nothing but 13 so is the right hand side.

4 0

2 years ago

Read 2 more answers

Christopher is 20 years younger than ishaan. ishaan and christopher first met two years ago. fourteen years ago, ishaan was 3 ti

velikii [3]

<span>you need to set up the equations solve for x or y. and substitute. I can give you the starting equations, but i cant find the answer and I don't remember how to do all the steps, but the first two equations (the ones you use to solve for x or y to use to solve for a number to subsitute. x-12=y y-14=3x and there should be one more for that they met two years ago.</span>

4 0

3 years ago

Read 2 more answers

-1/2x-3=4<br> Solve for x

sleet_krkn [62]

Answer:

x=-3.5

reason:

first, add 3 to both sides
this makes the equation -1/2x=7
then, divide both sides by -1/2
this will give you x=-3.5

3 0

3 years ago

Read 2 more answers

What is 3 3/4 + 2 1/2

Nadya [2.5K]

6 1/4 :) Is this correct?

5 0

3 years ago

Read 2 more answers

A street light is mounted at the top of a 15-ft-tall pole. A man 6 ft tall walks away from the pole with a speed of 4 ft/s along

mina [271]

Answer:

The tip of the man shadow moves at the rate of $\frac{20}{3} ft.sec$

Step-by-step explanation:

Let's draw a figure that describes the given situation.

Let "x" be the distance between the man and the pole and "y" be distance between the pole and man's shadows tip point.

Here it forms two similar triangles.

Let's find the distance "y" using proportion.

From the figure, we can form a proportion.

$\frac{y - x}{y} = \frac{6}{15}$

Cross multiplying, we get

15(y -x) = 6y

15y - 15x = 6y

15y - 6y = 15x

9y = 15x

y = $\frac{15x}{9\\} y = \frac{5x}{3}$

We need to find rate of change of the shadow. So we need to differentiate y with respect to the time (t).

$\frac{dy}{t} = \frac{5}{3} \frac{dx}{dt}$ ----(1)

We are given $\frac{dx}{dt} = 4 ft/sec$ . Plug in the equation (1), we get

$\frac{dy}{dt} = \frac{5}{3} *4 ft/sect\\= \frac{20}{3} ft/sec$

Here the distance between the man and the pole 45 ft does not need because we asked to find the how fast the shadow of the man moves.

7 0

3 years ago