Is the number below rational or irrational? Square root of V16

A teacher gave her class two quizzes. 25% of the class passed both quizzes and 40% of the class passed the first quiz. What perc

Tatiana [17]

Answer:

35%

Step-by-step explanation:

40% + 25% = 65% minus that bye 100 you would get 35% the reason the answer isn't 65 is because add 40+25+65=130 which a whole is equal to 100 but if you do 40+25+35= 100 so thr answer is 35% :)

4 0

3 years ago

Solve for x (13x+45) (12x-40) (19x+3) (6x+2)

Sonja [21]

Answer:

$x=-\frac{1}{5}$

Step-by-step explanation:

you combine like terms and set equal to zero you get $50x+10=0$ then subtract the 10 and divide by 50 it would give you a $-\frac{10}{50}$ which simplifies to be $-\frac{1}{5}$

8 0

4 years ago

Nikki spent $59.29 on clothing. She bought 3 shirts and a pair of pants. The pair of pants cost $21.29. If each shirt cost the s

Sergeu [11.5K]

Answer: $12.66

Step-by-step explanation:

59.29 - 21.21= 38.00

38 / 3= $12.66

5 0

4 years ago

Thirty three different video games showing violence were observed. The duration times of violence (in seconds) were recorded. W

AlladinOne [14]

Answer:

The "df" stands for "degrees of freedom", and represents the number of independent observations in a set of data.

Its value in this case is df=32.

Step-by-step explanation:

The sample is of size n=33.

As we do not know the population's standard deviation, we use as estimate the sample's standard deviation. Because of this, we use the t-statistic in place of the z-value.

The "df" stands for "degrees of freedom", and represents the number of independent observations in a set of data (the data in this case is the sample of 33 video games).

In one-sample tests, the degrees of freedom are calculated as:

$df=N-1=33-1=32$