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saul85 [17]
3 years ago
12

In one day, a store sold 3/5 with as many DVDs as Blu-ray Discs. The total number of DVDs and Blu-ray disc sold that day was 472

how many DVDs were sold
Mathematics
1 answer:
never [62]3 years ago
8 0
You multiply 3/5 to 472 and the answer will be 283.2
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The function f(t) = 33 sin (pi over 2t) − 20 models the temperature of a periodic chemical reaction where t represents time in h
Gennadij [26K]
The given function is
f(t) = 33 sin( \frac{ \pi }{2} t) - 20
with
t = time, hours
f = temperature, °C


Because the maximum and minimum values for the Sine function are +1 and -1 respectively,
The maximum value of f  = 33 - 20 = 13.
The minimum value of f = -33 - 20 = -53. 

The period, T,  is given by
\frac{2 \pi }{T} = \frac{ \pi }{2} \\ \\ T=4

Answer:
Maximum: 13°;  Minimum: -53°;  period: 4 hours
4 0
3 years ago
If n + 7 = 10, evaluate 2n - 2<br> O 3<br> 0 17<br> 4<br> 6
Alexandra [31]

Answer:

The value of 2n - 2 is 4.

Step-by-step explanation:

Given the equation

n + 7 = 10

Subtract  7 from both sides of the equation

n+7-7=10-7

Simplify

n=3

Now substituting n = 3 in the equation

2n - 2 = 2(3) - 2

          = 6 - 2

          = 4

Therefore, the value of 2n - 2 is 4.

5 0
2 years ago
Divide.
777dan777 [17]
The answer is D) 192,201
7 0
3 years ago
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Prove that (2n+1)^2 - (2n+1)^2 is a multiple of 8 for all positive integer values of n
kogti [31]

Answer:

(2n + 1)[(2n + 1) � 1]

(2n + 1)(2n + 1 � 1)

(2n + 1)(2n), or 2n(2n + 1)

2n is an EVEN NUMBER, and adding 1 to an even number creates an ODD number

Therefore, 2n(2n+1)=EVEN NUMBER ODD NUMBER=EVEN NUMBER

Step-by-step explanation:

4 0
3 years ago
10. You currently have $40 dollars. You make $7.50 per hour at your part-
Viktor [21]

<u>Answer:</u>

(B) $152.50

<u>Step-by-step explanation:</u>

Friday: 5 hours x $7.50 per hour = $37.50

Saturday: 6 hours x $7.50 per hour = $45

Sunday: 4 hours x $7.50 per hour = $30

$40 + $37.50 + $45 + $30 = $152.50

I would have <u>(B) $152.50</u> in total.

Hopefully this helps :3 sorry if wrong :( Plz mark brainiest if correct :D Your bootiful/handsome! Have a great day luv <3

-Bee~

3 0
3 years ago
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