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3 years ago

Which is the better deal?

Mathematics

2 answers:

g100num [7]3 years ago

5 0

It cant be 5. so that narrows down 1 2 and 3.

isnt it obvious? it would be 3.

solniwko [45]3 years ago

4 0

3 dozen cookies for 3.60 dollars

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Genevieve loves 30% off wing night. She orders 12 wings that normally cost 1.25$ each. If the sales tax rate is 6.75%, how much

Dmitry_Shevchenko [17]

Approximately 71 cents

8 0

3 years ago

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Solve for r.<br> - 8x + 14 > 60 OR<br> - 4r + 50 < 58<br> Choose 1 answer:

hodyreva [135]

R would equal 2 i think

6 0

3 years ago

Use elimination method to solve the silmutaneous equations<br> 2x +3y=1<br> 3x=2y+8<br> (4marks)

kotegsom [21]

Answer:

2x +3y=1⇒equation 1

3x=2y+8

3x-2y=8⇒equation 2

by elimination method,

2x+3y=1 ×2

3x-2y=8 ×3

4x+6y=2

9x-6y=24

cut 6y and -6y

4x+6y=2

9x-6y=24

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

13x+0=26

13x=26

x=26/13

x=2

substitute x=2 in equation 1

2(2)+3y=1

4+3y=1

3y=1-4

3y=-3

y=-3/3

y=-1

therefore, x=2 and y=-1

hope it helps u!

6 0

3 years ago

Carly left for school at 8:15.she left school at 2:45.if she arrived at 8:45,how many hours was she in the school

Ne4ueva [31]

She was in school for 6 hours.

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2 years ago

at a particular high school, 42% of the students participate in sports and 25% of the students participate in drama. if 53% of t

baherus [9]

The probability that a student participates in both sports and drama is $0.14$ .

<h3>What is the formula for P(AUB), where A and B are any two events?</h3>

If $A$ and $B$ are any two events, then the probability of the joint event $(A\cup B)$ is given by the following formula: $P(A\cup B)=P(A)+P(B)-P(A\cap B)$

Given that 42% of the students participate in sports and 25% of the students participate in drama and 53% of the students participate in either sports or drama.

Suppose $S$ denotes that "a student participates in sports" and $D$ denotes that "a student participates in drama".
So, we have $P(S)=\frac{42}{100}=0.42$ , $P(D)=\frac{25}{100}=0.25$ , $P(S\cup D)=\frac{53}{100}=0.53$ .

We want to find the probability that a student participates in both sports and drama i.e., we want to find $P(S\cap D)$ .

By the above formula, we obtain:

$P(S\cup D)=P(S)+P(D)-P(S\cap D)\\\Longrightarrow P(S\cap D)=P(S)+P(D)-P(S\cup D)\\\Longrightarrow P(S\cap D)=0.42+0.25-0.53\\\therefore P(S\cap D)=0.14=\frac{14}{100}$

Therefore, the probability that a student participates in both sports and drama is $0.14$ .

To learn more about probability, refer: brainly.com/question/24756209

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6 0

1 year ago

Read 2 more answers