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3 years ago

For the given functions f and g find the composition:f(x)=x^2+6x-2 g(x)=x-6

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

7 0

-38+6x evaluate the power calculate the difference

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Help pls i need help !!

Ivanshal [37]

Answer:

Ray, Line, Transversal?, Plane, Segment

Step-by-step explanation:

6 0

3 years ago

A group of 4 friends are playing cards. The deck has 70 cards. To start the game the dealer makes a pile of 15 cards in the cent

fiasKO [112]

Answer:

15 cards.

Step-by-step explanation:

Because 70-15=60. 60 divide by 4 would be 15.

8 0

3 years ago

Evalute the integral (sin^3 (x)/cosx)dx

8090 [49]

$\int { \frac{sin ^{3} x}{cos x} } \, dx= \\ = \int { \frac{sin ^{2} x*sin x}{cos x} x} \, dx= \\ = \int { \frac{(1-sin ^{2} x)*sinx}{cos x} } \, dx =$
t = cos x,
dt = - sin x dx;
$= \int { \frac{-(1- t^{2}) }{t} } \, dt= \\ = \int { \frac{t ^{2}-1 }{t} } \, dt = \\ =\int {t} \, dt - \int { \frac{1}{t} } \, dt = t^{2}- ln t = \\ = \frac{cos ^{2} x}{2}-ln ( cos x ) + C$

8 0

3 years ago

If you were constructing a 99% confidence interval of the population mean based on a sample of n 1) = 25 where the standard devi

svetlana [45]

Answer:

We want a confidence of 99% so then the significance level would be 1%

The degrees of freedom are given by:

$df = n-1= 25-1=24$

And the critical value using the significance level $\alpha=0.01$ and $\alpha/2 =0.005$ and the critical value would be:

$t_{\alpha/2}= \pm 2.797$

Step-by-step explanation:

We know the following info :

$s= 0.05$ represent the standard deviation from the sample

$n = 25$ represent the sample size selected

We want a confidence of 99% so then the significance level would be 1%

The degrees of freedom are given by:

$df = n-1= 25-1=24$

And the critical value using the significance level $\alpha=0.01$ and $\alpha/2 =0.005$ and the critical value would be:

$t_{\alpha/2}= \pm 2.797$

3 0

3 years ago

What is the value of c in this linear system? A) 1 B) -3 C) -1 D) 2

Alika [10]

9514 1404 393

Answer:

B) -3

Step-by-step explanation:

There are methods for finding only c. Cramer's rule is one of them. It involves finding two determinants and taking their ratio. Here, we choose a more ad hoc approach. It appears that the value of b can be found by combining the last two equations.

(1/2)(2a +4b -2c) -(a -3b -c) = (1/2)(12) -(-4)

5b = 10

b = 2

Now, we can substitute this value into the first two equations. This gives ...

5a +c = -8

a - c = 2

Subtracting 5 times the second from the first gives ...

(5a +c) -5(a -c) = (-8) -5(2)

6c = -18 . . . . simplify

c = -3 . . . . . . divide by 6

The value of c is -3.

4 0

3 years ago