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3 years ago

Help please and thank you!!!!!

Mathematics

1 answer:

beks73 [17]3 years ago

6 0

Answer:

60000

Step-by-step explanation:

The mean is the average

Add all the salaries together

(30000+30000+40000+40000+40000+50000+190000)

420000

Then divide by the number of number

420000/7

60000

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3 years ago

Please help with this question!!

barxatty [35]

Answer:

-29/20

Step-by-step explanation:

The cosecant function is the inverse of the sine function. Both sine and cosecant are odd functions, meaning csc(-x) = -csc(x) = -1/sin(x).

csc(-θ) = -1/sin(θ) = -1/(20/29) = -29/20

6 0

3 years ago

Evaluate using <br> Definite integrals

swat32

Since $[0,4]=[0,1]\cup(1,4]$ , we can rewrite the integral as

$\displaystyle \int_0^1f(t)\;dt + \int_1^4 f(t)\; dt$

Now there is no ambiguity about the definition of f(t), because in each integral we are integrating a single part of its piecewise definition:

$\displaystyle \int_0^1f(t)\;dt = \int_0^11-3t^2\;dt,\quad \int_1^4 f(t)\; dt = \int_1^4 2t\; dt$

Both integrals are quite immediate: you only need to use the power rule

$\displaystyle \int x^n\;dx=\dfrac{x^{n+1}}{n+1}$

to get

$\displaystyle \int_0^11-3t^2\;dt = \left[t-t^3\right]_0^1,\quad \int_1^4 2t\; dt = \left[t^2\right]_1^4$

Now we only need to evaluate the antiderivatives:

$\left[t-t^3\right]_0^1 = 1-1^3=0,\quad \left[t^2\right]_1^4 = 4^2-1^2=15$

So, the final answer is 15.

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4 years ago

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vagabundo [1.1K]

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3 years ago

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Two more than a number n equals -6.

Elenna [48]

Answer:

2+n=-6

Step-by-step explanation:

To simplify n

n=-8

8 0

2 years ago

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