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kaheart [24]
3 years ago
15

Justin has two coupons for a phone.

Mathematics
1 answer:
Ghella [55]3 years ago
3 0

Answer:

1) Coupon A gives the lower price.

The price with coupon A is less than the price with coupon B.

Step-by-step explanation:

Here, according to the given details:

<u>Coupon A : $45 rebate on $65 phone</u>

So, the actual paid price for phone  = $65 - $45 = $20

If we apply Coupon A , the cost of the phone  = $20

<u>Coupon B : 65% off on $65 phone</u>

Now, calculating 65% of 65, we get:

\frac{65}{100}  \times 65 = 42.25

So, the discounted amt on $65 phone is $42,25

So, the actual paid price for phone  = $65 - $42.25 = $22.75

If we apply Coupon B , the cost of the phone  = $22.75

Hence, Coupon A gives the lower price.

The price with coupon A is less than the price with coupon B.

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Rock musician Donny West is paid 15% on his CD sales and tour video sales. Last year, he sold one million CDs and 550,000 videos
olganol [36]
He had $5,000,000 in CD sales; $3,300,000 in video sales; and he earned $1,245,000 in royalties.

1,000,000 CDs * $5 each = $5,000,000
550,000 videos * $6 each = $3,300,000

Total sales = 5,000,000+3,300,000 = 8,300,000
15% royalties = 0.15(8,300,000) = 1,245,000
5 0
4 years ago
3(-11+3i)+6(-6+i) can someone show me how to do this equation?
Andre45 [30]
Assuming "i" is an imaginary unit:
3(-11+3i)+6(-6+i) =\\&#10;-33+9i-36+6i=\\&#10;-69+15i
4 0
3 years ago
Given the formula x=4a (b+9) find x if a=5 and b=7
Agata [3.3K]
Just subsititute the given values in the formula

x =  4 * 5 ( 7 + 9 ) = 320 
8 0
3 years ago
The table below shows the relationship between the number of miles traveled X in the number of gallons used by which of the foll
Scrat [10]

Answer:

Number of miles = intercept + ___*gallons

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the table is not shown

3 0
3 years ago
A track star runs two races on a certain day. The probability thathe wins the first race is 0.7, the probability that he wins th
NARA [144]

Answer:

a) 80% probability that he wins at least one race.

b) 30% probability that he wins exactly one race.

c) 20% probability that he wins neither race.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that he wins the first race.

B is the probability that he wins the second race.

C is the probability that he does not win any of these races.

We have that:

A = a + (A \cap B)

In which a is the probability that he wins the first race but not the second and A \cap B is the probability that he wins both these races.

By the same logic, we have that:

B = b + (A \cap B)

The probability that he wins both races is 0.5.

This means that A \cap B = 0.5

The probability that he wins the second race is 0.6

This means that B = 0.6

B = b + (A \cap B)

0.6 = b + 0.5

b = 0.1

The probability that he wins the first race is 0.7.

This means that A = 0.6

A = a + (A \cap B)

0.7 = a + 0.5

a = 0.2

A) he wins at least one race.

This is

P = a + b + (A \cap B) = 0.2 + 0.1 + 0.5 = 0.8

There is an 80% probability that he wins at least one race.

B) he wins exactly one race.

This is

P = a + b = 0.2 + 0.1 = 0.3

There is a 30% probability that he wins exactly one race.

C) he wins neither race

Either he wins at least one race, or he wins neither. The sum of these probabilities is 100%.

From a), we have that there is an 80% probability that he wins at least one race.

So there is a 100-80 = 20% probability that he wins neither race.

6 0
3 years ago
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