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liberstina [14]
3 years ago
13

A group of people are playing a game where some players are eliminated in each round. The number of rounds in the game is given

by the function f(x)=128(0.50]^x. What is the initial number of players?
Mathematics
1 answer:
Nikitich [7]3 years ago
5 0
Is about the same as the posting you had before.

bear in mind that in an exponential equation the initial amount is usually the one outside the parentheses, the one that doesn't have an exponent
128(0.50)ˣ, that'd be 128.
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Find the surface area of the pyramid below. PLS HELPPP
Ksenya-84 [330]

Answer:

149.45 cm²

Step-by-step explanation:

Surface area of pyramid = ½Pl + BA

Perimeter of the base (P) = 7 + 7 + 7 = 21 cm

Slant height (l) = 12.2 cm

Area of base (BA) = ½*bh = ½*7*6.1 = 21.35 cm²

Plug in the values

Surface area = ½*21*12.2 + 21.35 = 149.45 cm²

5 0
3 years ago
If a chain is on 24 tooth front gear and 8 tooth rear gear determine whether this combination will result in high speed than a 2
marta [7]

24/8 = 3


the 24 to 8 gear = 3:1 ratio which is greater than 2:1

4 0
3 years ago
In order for a company's employees to work in a foreign office, they must take a test in the language of the country where they
ArbitrLikvidat [17]

Answer:

\sum x= 37, \sum y= 672, \sum xy =2907, \sum x^2 =173, \sum y^2 = 51320

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

With these we can find the sums:  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=173-\frac{37^2}{9}=20.889  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=2907-\frac{37*672}{9}=144.333  

And the slope would be:  

m=\frac{144.333}{20.889}=6.90953  

Nowe we can find the means for x and y like this:  

\bar x= \frac{\sum x_i}{n}=\frac{37}{9}=4.111  

\bar y= \frac{\sum y_i}{n}=\frac{672}{9}=74.667  

And we can find the intercept using this:  

b=\bar y -m \bar x=74.667-(6.9096*4.111)=46.241  

So the line would be given by:  

y=6.9096 x +46.241  

And for this case the value of the slope m = 6.9096 means that for every increase of 1 unit in the number of years we have an increase of approximately 6.9096 in the grades of the test.  

Step-by-step explanation:

Data given:

x: 3, 4, 4, 5, 3, 6, 2, 7, 3

y: 61, 68, 75, 82, 73, 90, 58, 93, 72

m=\frac{S_{xy}}{S_{xx}}  

\sum x= 37, \sum y= 672, \sum xy =2907, \sum x^2 =173, \sum y^2 = 51320

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

With these we can find the sums:  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=173-\frac{37^2}{9}=20.889  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=2907-\frac{37*672}{9}=144.333  

And the slope would be:  

m=\frac{144.333}{20.889}=6.90953  

Nowe we can find the means for x and y like this:  

\bar x= \frac{\sum x_i}{n}=\frac{37}{9}=4.111  

\bar y= \frac{\sum y_i}{n}=\frac{672}{9}=74.667  

And we can find the intercept using this:  

b=\bar y -m \bar x=74.667-(6.9096*4.111)=46.241  

So the line would be given by:  

y=6.9096 x +46.241  

And for this case the value of the slope m = 6.9096 means that for every increase of 1 unit in the number of years we have an increase of approximately 6.9096 in the grades of the test.  

3 0
3 years ago
A movie theater charges $15 for standard viewing, $20 for 3D viewing, and $35 for Dinner and a
Ludmilka [50]

The quantity of each type of seats sold are as follows:

  • Standard viewing = 2000

  • 3D seats = 800

  • Movie and a dinner seat = 200

According to the question,there are four times as many 3D, x seats as Dinner and a Movie, y seats.

That is, x = 4y

Also, total seats

= (x) + (y) + (z) = 3000...….............eqn(1)

Also, If the theater brings in $53,000 when tickets to all 3000 seats are sold.

  • 20x + 35y + 15z = 53000...........eqn(2)

By substituting 4y for x in equations 1 and 2; we have;

<em>5y + z = 3000</em>..…........eqn(3) and

<em>115y + 15z = 53000</em>.........eqn(4)

By solving equations 3 and 4 simultaneously; we have;

y = 200 and z = 2000

and since x = 4y

x = 800

The quantity of each type of seats sold is as follows:

  • Standard viewing = 2000

  • 3D seats = 800

  • Movie and a dinner seat = 200

Read more:

brainly.com/question/12413726

5 0
3 years ago
Mark filed a claim after his car was rear-ended by another driver. Which
Fofino [41]

Answer: A. He would not have to pay

Step-by-step explanation:

3 0
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