1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrews [41]
3 years ago
14

There are 80 seats in the small screen.

Mathematics
1 answer:
DanielleElmas [232]3 years ago
7 0
One quarter of 80 is 20
You might be interested in
Lacy draws a diamond from a standard deck of 52 cards. Without replacing the first card, she then proceeds to draw a second card
Viktor [21]

Answer:

a) i) No

ii) Probability of drawing a diamond and then spade without replacement is 0.0637.

b) i) Yes

ii) Probability of drawing a diamond and then spade with replacement is 0.0625

Step-by-step explanation:

Part a) Without replacement:

i) Are these events independent?

No, because the both events are dependent. because a card taken out of the deck is not replaced back before taking out the other card so the chances of event occur change.

ii) Determine the probability of drawing a diamond and then a spade without replacement.

Probability of drawing a diamond and then spade = (Probability of drawing a diamond) * (Probability of drawing a spade)

Probability of drawing a diamond :

Total cards in deck = 52

Diamonds = 13

Probability of drawing a diamond  = 13/52

Probability of drawing a spade:

Total cards in deck after taking diamond = 52 -1 =51

Spades = 13

Probability of drawing a spade  = 13/51

Probability of drawing a diamond and then spade = 13/52 * 13/51

= 169/2652

=0.0637

So, Probability of drawing a diamond and then spade without replacement  is 0.0637

Part b) With replacements

i) Are these events independent?

Input Yes or No:

Yes, these events are independent because a card taken out of the deck is replaced back before taking out the other card so the chances of event occur doesn't change.

ii) Determine the probability of drawing a diamond and then a spade with replacement.

Probability of drawing a diamond and then spade = (Probability of drawing a diamond) * (Probability of drawing a spade)

Probability of drawing a diamond :

Total cards in deck = 52

Diamonds = 13

Probability of drawing a diamond  = 13/52

Probability of drawing a spade:

Total cards in deck after replacing diamond = 52

Spades = 13

Probability of drawing a spade  = 13/52

Probability of drawing a diamond and then spade = 13/52 * 13/52

= 169/2704

=0.0625

So, Probability of drawing a diamond and then spade with replacement is 0.0625

7 0
4 years ago
the scale of a model railroad set is 3.5 millimeters to one foot if the length of a model car in the set is 150 millimeters what
Montano1993 [528]

\bf \begin{array}{ccll} \stackrel{mm}{model}&\stackrel{ft}{actual}\\ \cline{1-2} 3.5&1\\ 150&x \end{array}\implies \cfrac{3.5}{150}=\cfrac{1}{x}\implies x=\cfrac{150\cdot 1}{3.5}\implies x\approx 42.86

6 0
4 years ago
Read 2 more answers
The starting temperature was 24°.
ipn [44]

Answer:

-10°

Step-by-step explanation:

take 24°+8°= 32

beacuse there was a decrease of 7° per hour for 6 hours you must subtract 7° six times from 32°

7 0
3 years ago
PLease help with this question? I also need an explanation on how you got the answer
Tema [17]

Answer:

hmmmmmm

Step-by-step explanation:2

8 0
3 years ago
Read 2 more answers
Please help 6th grade math im new to it pleaae explain good​
Sholpan [36]

Answer:

0.6

Step-by-step explanation:

Given the trapezoid formula:

1/2(b1+b2/2)xH

We are given the numbers for the trapezoid:

0.3,0.9,1

To solve this here is what we are going to do.

1/2(0.9+0.3)x1

So add 0.9+0.3=1.2

Then Divide 1.2/2=0.6

So multiply 0.6 x 1=0.6

0.6 is your answer

7 0
3 years ago
Other questions:
  • Nick can read 3 pages in 1 minute. write the ordered pairs for nick reading 0,1,2 and 3 min
    11·1 answer
  • A triangle has vertices at r(1,1), s(-2,-4) and t(-3,-3). The triangle is transformed according to the rule r0,270.what are the
    6·1 answer
  • Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest
    10·2 answers
  • Write an algebraic expression for this word expression.
    10·1 answer
  • PLEASE HELP ASAP!!!!!!!!!!!
    12·2 answers
  • An angle formed by two chords is?
    15·2 answers
  • Will mark brainliest! Can anyone help me w this pls
    6·2 answers
  • 14 fewer than 12 times the<br> number of people in my<br> family is 46.
    8·1 answer
  • (please answer) <br> If f(x) = (x + 3) - 2, which of the following is the value of f(-3)?
    8·1 answer
  • Help Please really do need help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!