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2 years ago

Please help!! a probability question :/

Mathematics

2 answers:

erma4kov [3.2K]2 years ago

7 0

Answer:

B. 10/13

Step-by-step explanation:

There are 52 cards in a deck. Divide that by 4 and get 13, thats how many diamonds there are. There are 36 number cards. Since 9 of the cards in diamonds are numbers, we dont count those ones. 13-9 is 4, so we add that to our total to get 40. 40/52 is the same as 10/13.

Vera_Pavlovna [14]2 years ago

5 0

Answer: 10/13

Step-by-step explanation:

There are 52 cards in a deck. Every 13 cards, 9 will be number cards so there are 36 number cards. There are 13 diamond cards. There are 9 diamond cards that are number cards. So the probability of the following is (36+13-9)/52 = 40/52 = 10/13

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Sara is collecting signatures to pu on her towns ballot. So far, she has 432 signatures. This is 36% of the number of signatures

In-s [12.5K]

Sara needs to collect 1200 signatures.

Step-by-step explanation:

Let,

x be the total number of signatures she needs to collect

Given percentage = 36%

Signature collected = 432

According of statement;

36% of x = 432

$\frac{36}{100}*x=432\\$

$\frac{36x}{100}=432\\Multiplying\ both\ sides\ by 100\\100*\frac{36x}{100}=432*100\\36x=43200\\Dividing\ both\ sides\ by\ 36\\\frac{36x}{36}=\frac{43200}{36}\\x=1200$

Sara needs to collect 1200 signatures.

Keywords: Percentage, Division

Learn more about percentages at:

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3 years ago

Write the algebraic expression for the phrase 10 more than t

Scilla [17]

The algebraic expression is:

E = t + 10

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4 years ago

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Of a total of 100 buses operated within a particular town, 48 usually run on time and 36 of these buses are owned by Jerry. Of t

miv72 [106K]

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Below is similar question:

48 out of 100 private buses usually run on time. Out of the buses that are on time, only 36 are owned by Jerry. Out of the remaining 52 buses that usually run late, only 7 are owned by Jerry. What is the probability that a bus is owned by Jerry, given that it runs on time?
A. 0.58
B. 0.67
C. 0.75
D. 0.81

The answer is C as 36/48 = .75

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3 years ago

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If homework is 10% of your report card average, what would your report card grade be if your homework grade was 80 and the rest

zavuch27 [327]

Answer:

Step-by-step explanation:

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3 years ago

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Find two numbers with a sum of 20 and a difference of 14

sergey [27]

Find two numbers with a sum of 20 and a difference of 14

Make two equations

X+Y=20

X-Y=14

Now add x since y cancels out and add 20+14 To end up with

2x=34

Now divide 2 both sides to get x alone

2x/2=34/2

X=17

Now substitute x answer to first equation and solve for y

17+y=20

Subtract 17 both sides

Y= 3

Your two numbers are

3 and 17

4 0

3 years ago