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3 years ago

Simplify 3j - {2k - [5h - (3j k)]}.

1 answer:

4 0

Start with the ()
5h-3j-k since you cant add any further u just multiple the second neg in the []

-5h+3j+k+2k you can add ONLY the K

-5h+3j+3k now multiply the neg again this time tih the {}

3j+5h-3j-3k The 3J is canceled out b/c 3j-3j=0
Giving you a total of 5h+3k

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Un grupo de 4 amigos va al cine y las entradas les han costado 24$.¿cuanto pagaria en total un grupo de 7 amigos por sus entrada

vodka [1.7K]

4 entries are 24 so one entry is 24/4 = 6

so 7 friends pay 6*7 = 42

5 0

2 years ago

Mrs. Cervantes wants to paint her windmill. It has six sides, each of which is 3.5 feet wide by 11 feet tall. How many square fe

wolverine [178]

Answer:

231 ft²

Step-by-step explanation:

Given that :

Dimension of each side = 3.5 feets by 11 feets

Area of each side :

Length * width = (3.5 * 11) feets = 38.5 ft²

Number of sides = 6

Hence, number of square feets to paint :

Number of sides * area of each side :

6 * 38.5 ft²

= 231 ft²

7 0

2 years ago

For which function is f(x) not equal to f-1(x)?

bagirrra123 [75]

D is the answer.
If f(x) or y = 2x, the inverse is x = 2y or y=x/2 which is not f(x).

3 0

2 years ago

Read 2 more answers

A baker is selling a ton of pies. She puts them in crates and boxes. There are 65 crates and 121 boxy. Each crate contains 43 ap

marta [7]

Let's first find the number of apple pies.

apple pies = 65 crates x 43 apple pies per crate = 2795 apples pies

If each apple pie cost $12 then...

money from apple pies = 2795 apple pies x $12 = $33540

total pies sold = 2795 apple pie + 121 boxes x 76 sweet potato pies = 11991 pies

4 0

2 years ago

Read 2 more answers

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:

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

6 0

3 years ago