All categories

2 years ago

Evaluate k(x) = -k - 7 when k(-4)

Mathematics

1 answer:

FinnZ [79.3K]2 years ago

8 0

Answer:

I'm not sure but i think that it's

x= -7

Hope this helps

You might be interested in

HELP PLEASE!!! 5-6! Help!!!

STatiana [176]

Answer:

Step-by-step explanation:

x + y = 5 => x = 5 - y

y - 4 = - x

=> y - 4 = - ( 5 - y)

=> y - 4 = - 5 + y

=>4 = 5 , not true

So, no solution => system is inconsistent

option b

Explanation just as above.

4 0

3 years ago

Add the given polynomials. 3x^2 – 3x – 2 and -4x^2+ 6x – 2

tia_tia [17]

Answer:

-4x^2+6x-2

Step-by-step explanation:

7 0

3 years ago

Please Help! (Solve for x!)

Ulleksa [173]

Answer:

x=-8

Step-by-step explanation:

multiplying -5 * 2 to get rid of the 2 and the denominator which equals -10. Then, add two to the other side which equals negative eight.

4 0

2 years ago

Which law would you use to simplify the expression (x^4)^9?

Monica [59]

The Power of a Power Rule. In this case, you basically multiply the two exponents together, and simplify (x^4)^9 to equal x^36

7 0

3 years ago

Read 2 more answers

g In 2013, the Pew Research Foundation reported that 43% of U.S. adults report that they live with one or more chronic condition

SOVA2 [1]

Answer:

We are 95% confident that the true proportion of U.S. adults who live with one or more chronic conditions is between 39.7% and 46.33%

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 43\% = 0.43$

The standard error is $SE = 0.017$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100-95)\%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * SE$

=> $E = 1.96 * 0.017$

=> $E = 0.03332$

Generally 95% confidence interval is mathematically represented as

$\r p -E < p < \r p +E$

=> $0.43 -0.03332 < p < 0.43 + 0.03332$

=> $0.39668 < p < 0.46332$

Converting to percentage

$(0.39668 * 100)< p < (0.46332*100)$

$39.7\% < p < 46.33 \%$

7 0

3 years ago