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mash [69]
2 years ago
13

Enter the correct answer in the box. Simplify the expression x^5•x^7

Mathematics
1 answer:
qwelly [4]2 years ago
7 0

Answer:

x^12

Step-by-step explanation:

when multiplying with exponents, keep base and add exponents

when dividing with exponents, keep base and subtract exponents

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Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a maj
Charra [1.4K]

Answer:

d. 0.0023

Step-by-step explanation:

Calculation for the probability of getting a sample average of 1.8 or less

Using this formula

z score =(X-mean)/Standard errror

Where,

Standard error =Standard deviation/√(n)

Let plug in the formula

P(Xbar<1.8)=P(Z<(1.8 hours per day -2.2 hours per day)/(2 hours /√(200))

P(Xbar<1.8)=P(Z<-0.4/(2/14.14))

=P(Z<-0.4/0.1414)

=P(Z<-2.83)

Now let find the Z score of P(Z<-2.83) using the z table

P=0.0023

Therefore the probability of getting a sample average of 1.8 or less is:0.0023

5 0
2 years ago
Can you help me with my work
Pachacha [2.7K]
h(0)=3

The diver begins 3 meters above the water

----------------------------

\begin{gathered} h(1)=8 \\ 8>6.75>3 \end{gathered}

The diver reaches a maximum height of 8ft

The

3 0
1 year ago
36 miles per 6 gallons
stepladder [879]
6 m.p.g if that's the type of question your referring to...

4 0
2 years ago
Read 2 more answers
Four sets of three squared
yKpoI14uk [10]

Answer:

4^3

Step-by-step explanation:

Four sets of three Squared

To start, you will need to get the set(base number) and get the exponent 3 and put it on the top.

4^3

Hope this helps!

8 0
2 years ago
Four members from a 50 person committee are to be randomly selected to serve as chairperson, vicechairperson, secretary, and tre
alexdok [17]

Answer:

So, exists 5527200 different leadership structures.

Step-by-step explanation:

We know that four members from a 50 person committee are to be randomly selected to serve as chairperson, vicechairperson, secretary, and treasurer. The first perosn to be selected is the chairperson, the second to be selected as vice chairperson, the third is secretary, and the fourth is treasurer.

Since the order of the people is important to us, we have the following:

50·49·48·47=5527200

So, exists 5527200 different leadership structures.

3 0
3 years ago
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