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Gre4nikov [31]
3 years ago
13

Evaluate * g(x) = x – 2x2 find g(-3) + 13

Mathematics
1 answer:
frez [133]3 years ago
6 0

Step-by-step explanation:

g(-3) + 13

= (-3) - 2(-3)^2 + 13

= - 3 - 18 + 13

= -8.

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A fan of country music plans to make a custom cd with 1313 of her 2525 favorite songs. how many different combinations of 1313 s
ss7ja [257]
This is asking how many ways can we choose 13 songs from a set of 25.
The formula is:
n! / r! * (n -r)!    =

25! / 13! * 12! which equals

25 *24 *23 *22 *21 *20 *19 *18 *17 *16 *15 *14 *13!  divided by
13! * 12! which equals

25 *24 *23 *22 *21 *20 *19 *18 *17 *16 *15 *14 divided by
12* 11* 10* 9* 8* 7* 6* 5* 4* 3* 2*

which equals

<span> <span> <span> 2,490,952,020,480,000 </span> </span> </span> divided by <span> <span> <span> 479,001,600 </span> </span> </span>

and that equals
<span> <span> <span> 5,200,300 </span> </span> </span> combinations

Here's a combination calculator to check your work:
http://www.1728.org/combinat.htm






4 0
2 years ago
HELP!!!!!!!!!!!!!!!!!!  What is the perimeter of the figure shown on the coordinate plane?
densk [106]
You can look at those dots, for example, you see (2,8) and (2,2) then look at y and the difference is 6. so if you see it like that, (2,8) and (5,8) is 3, (5,8) and (5,4) would be 4, (5,4) and (8,4) would be 3, (8,4) and (8,2) would be 2, and lastly (2,2) and (8,2) is 6
Now you add all of them up which will be 6+3+4+3+2+6 = 24
so the perimeter of this figure is 24<span />
7 0
3 years ago
Test the hypothesis using the​ P-value approach. Be sure to verify the requirements of the test. Upper H 0​: pequals0.6 versus U
kow [346]

Answer:

Step-by-step explanation:

From the given information:

The null and the alternative hypothesis can be well written as:

H_o:P=0.6

H_1:P>0.6

Given that:

n = 200

x = 135

Alpha ∝ = 0.05 level of significance

Then;

⇒ n \times p\times (1-P)

= 200 × 0.6 × (1 -0.6)

= 200 × 0.6 × 0.4

= 48 ≥ 10

The sample proportion \hat P = \dfrac{x}{n}

= \dfrac{135}{200}

= 0.675

The test statistics Z = \dfrac{\hat P - P}{\sqrt{ \dfrac{P(1-P)}{n} }}

Z = \dfrac{0.675 - 0.6}{\sqrt{ \dfrac{0.6 \times 0.4}{200} }}

Z = \dfrac{0.075}{\sqrt{ \dfrac{0.24}{200} }}

Z = 2.165

The P-value = P(Z > 2.165)

= 1 - P(Z < 2.165)

From the z tables

= 1 - 0.9848

= 0.0152

Reject the null hypothesis since P-Value is lesser than alpha. ( i.e. 0.0152 < 0.05).

Thus, there is enough evidence to conclude that the value of the population proportion is greater than 0.6

7 0
3 years ago
What is the completely factored form of x4 + 8x2 – 9? (x + 1)(x – 1)(x + 3)(x + 3) (x+1)(x+1)(x+3){x^2+9} (x2 – 1)(x + 3)(x – 3)
Y_Kistochka [10]

Answer:

(x+1)(x-1)(x^2+9)

Step-by-step explanation:


5 0
2 years ago
6 program in 2 hours and 18 minutes which rate can he use
nadya68 [22]
Minutes. Because you cannot concert minutes to hours.

1 hour= 60 Minutes
2 hours= 120 Minutes
8 0
3 years ago
Read 2 more answers
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