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-Dominant- [34]
3 years ago
8

Subtract: (4n + 7) - (7n - 8)

Mathematics
1 answer:
Furkat [3]3 years ago
4 0
4n+7−(7n−8)

=4n+7+−1(7n−8)

=4n+7+−1(7n)+(−1)(−8)

=4n+7+−7n+8

Combine Like Terms

=4n+7+−7n+8

=(4n+−7n)+(7+8)

=−3n+15

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A card game goes like this: you draw a card from a 52-card deck. if it is a face card (jack, queen or king), you win $4; otherwi
GREYUIT [131]
Your expected value is -$0.62.

We multiply the probability of winning by the amount won.  There are 12 face cards out of 52 cards, and the amount won is 4:

12/52(4)

We also multiply the probability of losing by the amount lost.  There are 40 cards that are not face cards out of 52, and the amount lost is 2:

40(52)(-2)

Adding these, we have: 

(12/52)(4)-(40/52)(2) = -0.62.
8 0
3 years ago
Suppose Aji and sunshine have to pay $11 in royalties for each Beatles song and $7 for each Donovan song. How many of each type
andrey2020 [161]

To minimize their royal costs to $200, the number of Donovan songs to include is <u>15</u> and the number of Beatles songs to include is <u>5</u>.

<h3>What are ratios?</h3>

Ratios are numerical relationships between variables that show how much each variable is contained in another.

Ratios are stated in fractions, percentages, or decimals.

<h3>Data and Calculations:</h3>

Total songs to include in the song = 20

The ratio of Donovan and Beatles = 5:1.5

The number of Donovan songs to include = 15 (20/6.5 x 5)

The number of Beatles songs to include = 5 (20/6.5 x 1.5)

Royalty cost per Donovan song = $11

Royalty cost per Beatles song = $7

Total royalty costs for Donovan and Beatles song = $200 ($11 x 15 + $7 x 5)

Thus, the number of Donovan songs to include is <u>15</u> and the number of Beatles songs to include is <u>5</u>.

Learn more about ratios at brainly.com/question/2914376

#SPJ1

<h3>Question Completion:</h3>

Aji and Sunshine want to make a CD of songs from the 1960s to donate to their school library to be broadcast during school picnics. Sunshine's parents were big fans of the 60s singer Donovan, and they named her after his song "Sunshine Superman." Aji's folks were devotees of the Beatles. Aji and Sunshine want their CD to consist entirely of songs by Donovan and the Beatles. Because Sunshine is named after a Donovan song, she wants to include at least as many Donovan songs as Beatles songs. Aji agrees. In return, Sunshine agrees to include at least five Beatles songs. 5 1.5 To provide enough variety to make the mix interesting, they decide to include at least 20 songs altogether.

3 0
2 years ago
What is the domain and range of f(x)= |x-6|
marissa [1.9K]
Domain: possible x values
Range: possible y values

Solution: domain: all real numbers
Range: y greater than 0
7 0
3 years ago
If p and q are nonzero integers, which pair of points must lie in the same quadrant?
Tems11 [23]
Hello there.
<span>
If p and q are nonzero integers, which pair of points must lie in the same quadrant?
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<span>B. (p, q) and (2p, 2q)
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8 0
4 years ago
Read 2 more answers
A number is increased by 5, and then squared.
Anit [1.1K]

Answer:

E) x2 + 10x + 25

Step-by-step explanation:

A number is increased by 5, and then squared is

(x + 5)^2

When taken out of the parenthesis it is:

x2 + 10x + 25 is your answer.

6 0
3 years ago
Read 2 more answers
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