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kirill115 [55]
3 years ago
15

A student tracks their amount of hours of sleep per night for a week. If they sleep the following amount of hours each night, wh

at is their MEAN number of hours of sleep? 4, 5, 5, 5, 6, 9, 10
Mathematics
1 answer:
Fantom [35]3 years ago
3 0
The answer is 6.2857 you take all the values add them together then divide by the amount of values
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A music store bought a CD set at a cost of​ $20. When the store sold the CD​ set, the percent markup was​ 40%. Find the selling
Debora [2.8K]

Answer:

$28

Step-by-step explanation:

cp=20

mp=20%ofcp

=20/100*20

=8

now,

sp=mp+cp

=8+20

=28

8 0
3 years ago
What is the equation of the line that passes through the points (-1 , 3/2) and (1/2 , 1/2 )
Simora [160]

Answer:

<u>y = -2/3x + 5/6</u> (slope intercept) (y = ax + b)

4x + 6y = 5 (standard form) (Ax + By = C)

y - 3/2 = -2/3(x + 1) (point slope) (y-y1 = m(x-x1)) (m = y2 - y1 / x2 - x1)

______________________________________

6 0
3 years ago
Every valid argument with true premises has a true conclusion. Rewrite the above statement in the form V[x] x, if [y] then [z] (
just olya [345]

Answer:

Let y(x)="x is valid and x has true premises" and z(x)="x has a true conclusion".

Step-by-step explanation:

The universe U is the collection of all arguments so that x∈U. The statement uses the universal quantifier ∀ represented by the word "Every". The words "valid", "with true premises" and "has a true conclusions" are properties of an argument x.

We can interptet the statement as: "For all x, (x is valid and x has true premises)→(x has a true conclusion)". Symbolically, (∀x)(y(x)→z(x)). The implication → can be read as "if y(x) then z(x)".

4 0
3 years ago
Jim thinks that the value of a baseball card can be modeled by a decay formula and that the value will decrease at a rate of 0.2
Sindrei [870]

Answer: $244.55

A = $250  ;  r=0.002   t= 11   [From 2007 to 2018 , t=2018-2007]

6 0
1 year ago
Ginny buys 7 magazines for 2.80 how much does 1 cost?<br> How much does do 5 magazine cost?
saw5 [17]

Answer:

one costs 0.40 and 5 cost 2.00

Step-by-step explanation:

bc 2.80/7 = 0.40

0.40 times 5 = 2.00

3 0
2 years ago
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