# Find arccos[cos(7pi/2)] please show work. I will mark brainliest

###### Question:

Find arccos[cos(7pi/2)] please show work. I will mark brainliest

### There are 13 penguins going on a field trip to an iceberg. The penguins try to get into 6 equal-sized groups. They make the groups as large as they can, but not every penguin is in a group. How many penguins are in each group? The answer must be a whole number. penguins How many penguins remain without a group? The answer must be a whole number. penguins

There are 13 penguins going on a field trip to an iceberg. The penguins try to get into 6 equal-sized groups. They make the groups as large as they can, but not every penguin is in a group. How many penguins are in each group? The answer must be a whole number. penguins How many penguins remain wit...

### Which diagram shows plane PQR and plane QRS intersecting only in QR?l

Which diagram shows plane PQR and plane QRS intersecting only in QR?l...

### Less than of people in the United States know how much they need to save for retirement.

Less than of people in the United States know how much they need to save for retirement....

### Functions of operating systems​

functions of operating systems​...

### Data mining can support the marketing function by: a. Eliminating the need for a firm to have a billing department b. Billing the customer immediately c. Finding out how many hours it takes to make a product d. Using customer's past purchase history to send information about related products and services the customer may be interested in

Data mining can support the marketing function by: a. Eliminating the need for a firm to have a billing department b. Billing the customer immediately c. Finding out how many hours it takes to make a product d. Using customer's past purchase history to send information about related products and ser...

### Determine the name of Sn(NO3)4⋅5H2O

Determine the name of Sn(NO3)4⋅5H2O...

### How many multiples of 3 are between 62 and 215?

How many multiples of 3 are between 62 and 215?...

### Identify the following italicized word as a gerund, participle, or infinitive. wishing will never make your dreams come true. type of verbal:

Identify the following italicized word as a gerund, participle, or infinitive. wishing will never make your dreams come true. type of verbal:...

### Why does atticus or aunt alexandra attend the pageant?

why does atticus or aunt alexandra attend the pageant?...

### How do equally share 4 oranges with 5 friends

How do equally share 4 oranges with 5 friends...

### What is the net ionic equation of the reaction of BeCl2 with NaOH? Express your answer as a chemical equation.

What is the net ionic equation of the reaction of BeCl2 with NaOH? Express your answer as a chemical equation....

### What is the partial product of 2.3 x 2.6?

What is the partial product of 2.3 x 2.6?...

### Which do you need more if in order to increase your reading speed?

Which do you need more if in order to increase your reading speed?...

### WILL MAKE BRAINLIEST!!!!!!!PLEASE INCLUDE FULL WORKINGSSS!!!!

WILL MAKE BRAINLIEST!!!!!!!PLEASE INCLUDE FULL WORKINGSSS!!!!...

### Why was Pip living with his sister? A) His parents had passed away. B) His parents couldn't afford to keep him. C). He was frightened by the man that he encountered. D) His sister was trying to turn him into her servant.

Why was Pip living with his sister? A) His parents had passed away. B) His parents couldn't afford to keep him. C). He was frightened by the man that he encountered. D) His sister was trying to turn him into her servant....

### A pharmacist–herbalist mixed 100 g lots o St. John’s wort containing the ollowing percentages o the active component hypericin: 0.3%, 0.7%, and 0.25%. Calculate the percent strength o hypericin in the mixture.

A pharmacist–herbalist mixed 100 g lots o St. John’s wort containing the ollowing percentages o the active component hypericin: 0.3%, 0.7%, and 0.25%. Calculate the percent strength o hypericin in the mixture....

### What is the molarity of a solution in which 58g of nacl are dissolved in 1.0l of solution?

What is the molarity of a solution in which 58g of nacl are dissolved in 1.0l of solution?...