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Julli [10]
3 years ago
7

I need help with this...

Mathematics
1 answer:
Mrrafil [7]3 years ago
5 0

the answer is 60 :) good luckStep-by-step explanation:

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Simplify and write the answer in exponential form. 3^4 x 3^5 a.) 3^9
givi [52]

Answer:

<h3>(a) 3^9</h3>

Step-by-step explanation:

<h3> IN EXPONNETIAL FORM :</h3>

<h3>– (a^m× a^n) = (a^m+n)</h3>

<h3>3^4 × 3^5 = 3^4+5 = </h3>

<h2>3^9 </h2>

<h3 />
5 0
3 years ago
Really easy question !! :)
kherson [118]

Answer:

20:21

Step-by-step explanation:

Let's first start by converting each ratio so that the number of girls is the same

2:3

4:7

The least common multiple of 3 and 4 is 12 so...

8:12

  12:21

We add 8 and 12 to get the number of junior members...

8+12=20

Then we put it in a ratio with the amount of adult members...

20:21

5 0
2 years ago
A sports club is planning a cookout. The food
DIA [1.3K]

Answer:

maximum number: 171

Step-by-step explanation:

The $500 budget that will serve the people (x) with flat fee of $200 and $1.75 per person

1.75x + 200 = 500

1.75 x = 300

x =  171.4

3 0
3 years ago
An intelligence test that has a maximum completion time of 45 minutes was recently administered to a group of 9 people. Their re
Ede4ka [16]

Answer:

a) \bar X=39.9

b) Median =40

c) Bimodal distribution 40,45 with a frequency of 2 for each one

Step-by-step explanation:

Part a

The statistical mean refers "to the mean or average that is used to derive the central tendency of the data in question. It is determined by adding all the data points in a population and then dividing the total by the number of points". And is defined:

\bar X =\frac{\sum_{i=1}^n x_i}{n}

And for this case if we apply this formula we got:

\bar X =\frac{45+40+42+39+44+40+45+33+21}{9}=39.9

Part b

The median is a "measure of central tendency. To find the median, we arrange the observations in order from smallest to largest value. And we have two possible cases:

1) If there is an odd number of observations, the median is the middle value. 2) If there is an even number of observations, the median is the average of the two middle values."

So if we order the dataset we got:

31,33,39,40,40,42,44,45,45

Since we have an odd number of observation n=9, the median would be just the middle value on position 5 and for this case Median =40

Part c

The mode of a set of data values is the value that appears most often. As a set of data can have more than one mode, the mode does not necessarily indicate the centre of a data set.

For this case we have a bimodal distribution and the corresponding values are 40 and 45 with a frequency of 2 for each one.

8 0
3 years ago
If 6 - 7 = -1, which of the following is true?
MAXImum [283]
The answer is -1 + 7 = 6
6 0
2 years ago
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