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Kruka [31]
2 years ago
15

Please help I'm behind

Mathematics
1 answer:
inessss [21]2 years ago
8 0

You applied the rule improperly.  When dividing exponents, you subtract the exponent of the denominator <em>from</em> the exponent of the numerator, not the other way around.  The exponent you should have gotten was 8^{-6}

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Evaluate 21/a+4 when a=3
DochEvi [55]

Answer:

11

Step-by-step explanation:

All you have to do is plug in a. In this case, a=3.

21/a+4

21/(3)+4

21/3+4

7+4

11

If this helps please mark as brainliest

5 0
2 years ago
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Determine the exact values of the six trigonometric functions of the real number t
NeTakaya
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3 years ago
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What is the value of x?
musickatia [10]
X = 7. Because both lines equal the same so it has to equal 75
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6 0
2 years ago
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On a certain​ route, an airline carries 8000 passengers per​ month, each paying ​$70.A market survey indicates that for each​ $1
son4ous [18]

Answer:

The maximum revenue is $661,250.

Step-by-step explanation:

The total revenue (R) is the product between the number of passengers (N) and the price of each ticket (P), so the inicial revenue is:

R = N * P = 8000 * 70 = $560,000

For each 1$ increase in the ticket, the airline loses 50 passengers, so if we call "x" the increase in the ticket price, we have that the revenue equation will be:

R = (8000-50*x) * (70+x) = 560000 + 8000*x - 50*70*x -50x2

R = -50*x2 + 4500*x + 560000

The value of x that gives the maximum value of a quadratic function is found using the formula:

x = -b/2a

where a and b are coefficients of the quadratic equation (in our case, a = -50 and b = 4500)

So the value of x that gives the maximum revenue is:

x = -4500 / (-100) = 45

Using this value in the revenue equation, we have that the maximum R is:

R = -50*45^2 + 4500*45 + 560000 = $661,250

(To get this revenue, the ticket will cost 70+45 = $115 and there will be 8000-50*45 = 5750 passengers)

3 0
2 years ago
The length of the longest loaf of bread measured 1,405ft 1 3/4in. It was cut into slices 1/2in. thick. How many slices were ther
Paha777 [63]
1 inch would equal 2 slices of bread.  
So there would be 24 slices in one foot.
multiply 1405 by 24 and you get 33720
so then add 3 to that from the 1 3/4
you know have 33723 1/2 slices of bread. because 3/4-1/2 would be 1/4 which is 1/2 a slice of bread.
so the answer would be 33723 1/2 slices of bread:)
4 0
3 years ago
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