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4 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!

Mathematics

1 answer:

worty [1.4K]4 years ago

5 0

${y}^{2} + 49 \\ \\ = {y}^{2} - ( - 49) \\ \\ = {y}^{2} - {(7i) }^{2} \\ \\ = (y + 7i)(y - 7i)$

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Which is equivalent to log 1/2^462?

AysviL [449]

−8.85174904141 is log 1/2^462

8 1

4 years ago

Read 2 more answers

you are rolling a 10-sided die with sides numbered 1-10. you keep rolling the die until you roll a prime number and then stop. l

evablogger [386]

The formula for E(x) would be SUM[ X(n)P(n)] from n = 1 to n = infinity until we get the prime number

In the given problem, a 10-sided die with 1-10 numbers is rolled until we get a prime number

Prime numbers between 1-10 = 2,3,5,7 (4 prime numbers)

Non - prime numbers = 1,4,6,8,9,10( 6 non-prime number)

Let X be the number of times the die is rolled

The probability of getting a prime =

$P(Prime) = \frac{4}{10}$

Now, the value of

E(X)=∑x.P(x) [ x-> {1, infinity}]

= P(1)X(1) +P(2)X(2)+P(3)X(3)+P(4)X(4)........+ P(n)X(n)

= 1. $\frac{4}{10}$ + 2. $\frac{6}{10}$ . $\frac{4}{10}$ + 3. $\frac{6}{10}$ . $\frac{6}{10}$ $\frac{4}{10}$ + 4. $\frac{6}{10}$ . $\frac{6}{10}$ . $\frac{6}{10}$ . $\frac{4}{10}$ .......

Hence, this is the value of E(x)

To learn more about Prime number, here

brainly.com/question/9315685

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4 0

2 years ago

Help me please!!!!!!

lara [203]

Answer:

Step-by-step explanation:

Seeds for each row = Total number of seeds/Number of rows

=(1220+750+1450)/60

=3420/60

=57 seeds per row

5 0

3 years ago

Here is a representation showing the amount of red and blue paint that make 2 batches of purple paint. How many batches are made

ankoles [38]

Answer:

Step-by-step explanation:

7 0

3 years ago

Consider f(x) = b^. Which statement(s) are true for 0 < b < 1? Check all that apply.

Elis [28]

Answer:

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Consider f(x) = $b^{x}$ . Which statement(s) are true for 0

The domain is all real numbers.

The domain is x > 0.

The range is all real numbers.

The range is y > 0.

The graph has x-intercept 1.

The graph has a y-intercept of 1.

The function is always increasing.

The function is always decreasing.

My answer:

The domain is all real numbers.

True, the domain of a function is the complete set of possible values of the independent variable. Here, we can have unlimited values of x so we will have unlimited values of f(x)

<=> our domain (0 , +∞ )

The domain is x > 0.

Wrong, as we discussed in the aforementioned answer.

The range is all real numbers.

Wrong

The range is y > 0.

True, the range of a function is the complete set of all possible resulting values of the dependent variable (f(x), usually), after we have substituted the domain. Because this is an exponential function so:

<=> our range (0 , +∞ ) or y>0

The graph has x-intercept 1.

we can set f(x)=0 and then we can solve for x

f(x) = $b^{x}$ = 0

x is undefined so, x-intercept does not exist

The graph has a y-intercept of 1

y-intercept when x is 0, so f(x) = 1 . True.

The function is always decreasing

Because 0 < b < 1, The function is always decreasing when we increase the value of x.

So we choose A D F H

3 0

3 years ago