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3 years ago

PLEAAAAASE HELP MEEEE

Mathematics

2 answers:

timama [110]3 years ago

7 0

Answer:

D: 3^3 x 2^2

Step-by-step explanation:

--you distribute the power of 5 to 3 and 2

(3 x 2)^5 ----> 3^5 x 2^5

-- you step up your new variables to the equation

3^5 x 2^5

3^2 x 2^3

--you have to subtract the exponents in division problems

5-2=3 5-2=3

--finally plug in your new exponents to the solution

3^3 x 2^2

azamat3 years ago

4 0

Answer:

The Answer is C

Step-by-step explanation:

You might be interested in

If r1 and r2 are the roots of the quadratic equation ax+bx+c=0 show that r1+r2=-b/and r1r2=c/a

velikii [3]

$x_{1,2} = \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}$

is the formula for calculating x1 and x2

To prove x1 + x2 = -b/a all we need to do is to express x1 and x2 from equation above

once we do we will get -2b/2a which is equal to -b/a because square root part will negate each other. one has + sign in front and other - sign

Showing that x1x2 = c/a goes similar way.
the numerator parts is actually difference of squares. after that we will have:
-b^2 -b^2 + 4ac = 4ac

in denominator we have 2a*2a = 4a^2
4ac/4aa = c/a

4 0

3 years ago

Suppose that 45% of students in a college have a smart phone. If you select three students at random, what is the probability th

Sidana [21]

Answer:

$P(X=3)$

And we can use the probability mass function and we got:

$P(X=3)=(3C3)(0.45)^3 (1-0.45)^{3-3}=0.091$

Then the probability that all three have a smart phone is 0.091

Step-by-step explanation:

Let X the random variable of interest "number of students with smartphone", on this case we now that:

$X \sim Binom(n=3, p=0452)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(X=3)$

And we can use the probability mass function and we got:

$P(X=3)=(3C3)(0.45)^3 (1-0.45)^{3-3}=0.091$

Then the probability that all three have a smart phone is 0.091

8 0

3 years ago

The president of a certain university receives a salary that is four times the salary of one of the department heads. The total

Viktor [21]

a. The salary of the department head is $105,000.

b. The salary of president is $420,000.

Step-by-step explanation:

Let,

x be the salary of president.

y be the salary of head of department.

According to given statement;

x=4y

a) What is the salary of the department head?

Salaries of two heads of department = $210000

$2y=210000$

Dividing both sides by 2;

$\frac{2y}{2}=\frac{210000}{2}\\y=105000$

The salary of the department head is $105,000.

b) What is the salary of the president of the university?

x=4y

$x=4(105000)\\x=420000$

The salary of president is $420,000.

Keywords: Division, multiplication

Learn more about multiplication at:

#LearnwithBrainly

6 0

4 years ago

In hypothesis testing, does choosing between the critical value method or the P-value method affect your conclusion? Explain.

slamgirl [31]

Answer:

Step-by-step explanation:

Yes, because the critical value method uses critical value(s) to identify the rejection region(s). The P-value method compares the P-value with the level of significance alpha.

Explanation: When you reduce your significance value, the critical value either gets smaller, or larger depending on the tails. This means that your test statistic would also have to get smaller or larger depending on the tail in order to reject the null hypothesis.

At test that rejected the null hypothesis at 5% may not reject it at 1%

8 0

4 years ago

How do you write the equation for 4.

Readme [11.4K]

This is an exponential growth problem of the form:

F=Ir^t, F=final amount, I=initial amount, r=rate, t=time

In this case:

F=50(1.08^t)

F(17)=50(1.08^17)

F(17)=$185.00

8 0

3 years ago

PLEAAAAASE HELP MEEEE​

PLEAAAAASE HELP MEEEE