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dalvyx [7]
3 years ago
13

There are letter tiles in a bag. Four A's, five B's, six C's and five D's. You select one tile, replace it, and then draw anothe

r. P( C and D)=____
Mathematics
1 answer:
Charra [1.4K]3 years ago
7 0

Answer: 3/40

Step-by-step explanation:

Number of A's = 4

Number of B's = 5

Number of C's = 6

Number of D's = 5

Total number of letters tiles = 20

Probability of selecting C = 6/20 = 3/10

Probability of selecting D = 5/20 = 1/4

P( C and D)= 3/10 × 1/4 = 3/40

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Set up and solve a system of equations to solve the problem.
Butoxors [25]

Answer:

The first Gym when he joins we will have to pay 60 dollars and in a 30 witch cost 90 dollers. but the second gym cost 50 $ per month so the first gym in a year he will pay 450$ and the second one 600 so the first one is cheeper.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I need help pls<br> thank you
marissa [1.9K]

Answer:

x=22°, y=50°, z=108°

Step-by-step explanation:

x=22°(alternate angles are equal)

y=50°(angle sum in triangle is 180°)

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6 0
3 years ago
Kira received a $80 gift card for a coffee store. She used it in buying some coffee that cost $8.03 per pound. After buying the
never [62]

Answer:

5 pounds

Step-by-step explanation:

80 - 39.85 = 40.15

40.15 ÷ 8.03

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3 0
1 year ago
eric is 70 inches tall pablo is as half as tall as eric annette is 5.25 inches taller than pablo how tall is annette
Kazeer [188]

Answer:

40.25 inches

Step-by-step explanation:

Following what the problem mentions:

"eric is 70 inches tall"

Eric=70in

"pablo is as half as tall as eric"

pablo=\frac{Eric}{2}

pablo=\frac{70in}{2}=35in

and "annette is 5.25 inches taller than pablo"

annete=pablo+5.25in

annette=35in+5.25in =40.45in

Annette is 40.25 inches tall

7 0
2 years ago
What is the X<br> 3x +15 and 2x + 20
Georgia [21]

Answer:

<h2><u><em>x = 5</em></u></h2>

Step-by-step explanation:

What is the X

3x +15 and 2x + 20

assuming that the question is an equation

3x + 15 = 2x + 20

3x - 2x = 20 - 15

x = 5

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

check

3 * 5 + 15 = 2 * 5 + 20

30 = 30

the answer is good

5 0
2 years ago
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