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3 years ago

Which table represents a liner function pls someone help a innocent 8th grader!!!!

Mathematics

1 answer:

Rufina [12.5K]3 years ago

3 0

I think its B but I’m not sure since I can’t fully see D.

Hope this helps!

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________ is a fundamental difference between the t statistic and a z-score

chubhunter [2.5K]

Answer:

Step-by-step explanation:

- The Z-score allows you to decide if your sample is different from the population mean. In order to use z, you must know four things:

The population mean.
The population standard deviation.
The sample mean.
The sample size.

- Usually in stats, you don’t know anything about a population, so instead of a Z score you use a T-Test with a T Statistic.

- The major difference between using a Z score and a T statistic is that you have to estimate the population standard deviation. The T test is also used if you have a small sample size (less than 30).

6 0

3 years ago

PLEASE SOLVE THIS :(

Lesechka [4]

Answer:

10.5 %

Skills needed: Financial Math Essentials

Step-by-step explanation:

1) First, before getting started, let's assume the price of the product is $x$ . This variable will be used a lot throughout the problem ( $x$ ).

2) Marking a price above means increasing the price in order to make money off of the purchased product. When raising something by $y$ percent, the new price would be $x + \frac{y}{100}*x$ .

---> In this case, the price increased by $\textbf{30}$ percent.

This means that it would be: $x+\frac{30}{100}x = x+0.3x=1.3x$

New price is: $1.3x$

3) The shopkeeper is then offering a $\textbf{15}$ percent discount off of this marked price. When offering a $b$ percent discount price, the new price (with discount), expressed algebraically is: $a-\frac{b}{100}a$

---> the expression above simplifies to $(1-\frac{b}{100})a$

In this case, $a=1.3x$ , $b=15$

---> $(1-\frac{15}{100})*1.3x = (1-0.15)*1.3x=0.85*1.3x=1.105x$

This means that $x$ , with discount, has been raised $\textbf{10.5 percent}$ .

10.5 % is the profit percent

(The profit percent being the final marked up price - purchased price)

5 0

2 years ago

Pls help me with this question!

Sveta_85 [38]

Step-by-step explanation:

The inequality represents:

h is less than or equal to 46.

Values included;

46
Values less than 46.

I apologize for the line being uneven.

7 0

2 years ago

4/8 x 4/8 i dont care if you answer want to be fwen :)

Aleonysh [2.5K]

Answer:

1/4

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total

dimulka [17.4K]

You can set up a system of equations for this problem. x= number of coach tickets and y = number of first class tickets.

$210x + $1200y = $10,230 (cost of coach ticket plus cost of first class tickets is total budget)

x + y = 11 (number of coach tickets plus number of first class tickets is total number of people)

Solve the second equation for y to get y = 11 - x, then plug that into the first equation and solve for x:

$210x + $1200(11 - x) = $10,230

$210x + $13,200 - $1200x = $10,230

-$990x + $13,200 = $10,230

-$990x = $2,970

x = 3

Sarah bought x = 3 coach tickets. Plug that into the second equation and solve for y:

3 + y = 11

y = 8

Sarah bought y = 8 first class tickets.

6 0

3 years ago