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OleMash [197]
3 years ago
9

Simplify (X-4+2i)(x+5-3i)

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0
Use distributive property
x^2+x-14+(-x+22)i
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If c is a set with c elements how many elements are in the power set of c
Fofino [41]

There would be 2 raised to c elements in the power set. Elements of the power set are formed by making a binary decision on each element of the input set: include or do not include. Since there are two choices for each element of the input set, and there are c elements in the input set, there are 2^c possible arrangements of these input elements.

3 0
3 years ago
Describe how to write the null and alternative hypotheses based on a claim. Provide at least one example to clarify your explana
Umnica [9.8K]

Answer:

Step-by-step explanation:

The null and alternative hypothesis are usually used in hypothesis testing to present the claim being tested as give in terms of the mean or proportion :

Given that the mean score of high school students is 10 ; using a sample of 50 students, a mean of 8 was obtained ; we could want to test the claim that the mean score is less than 10.

Here; population mean, μ = 10 ; the claim is now that, μ < 10 based on what was observed about the sample.

H0 : μ = 10

H0 : μ < 10

If we wanted to test If the mean was greater than 10 ; then the sign is reversed

H0 : μ = 10

H0 : μ > 10

If we wanted to test If the score is just different from the mean score stated ; (it may be less than or greater than)

H0 : μ = 10

H0 : μ ≠ 10

7 0
3 years ago
How many solutions exist for the given equation?
katrin2010 [14]

1(x + 12) = 4x - 1\\x+12=4x-1\\13=3x\\x=\frac{13}{3} \\x=4\frac{1}{3}

This equation has only one solution

/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\

P.S. Hello from Russia

7 0
3 years ago
Read 2 more answers
Find the value of x. Round to the nearest tenth <br> A. 11.0<br> B. 9.1<br> C. 4.2<br> D. 23.7
Greeley [361]
A tell me if it’s right
5 0
3 years ago
Plz help me with this
madreJ [45]

In order a0->a5: 1/3, 1, 3, 9, 27, 81

All you're doing is plugging the x-value in. So for a2, x=1, so y=3¹ which means y=3.

6 0
3 years ago
Read 2 more answers
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