What is (7r - 1)(8r^2 + 8r + 1)

Answers

Answer 1

Answer: (7r - 1)(8r² + 8r + 1)

7r*(8r² + 8r + 1) - 1*(8r² + 8r + 1)

56r³ + 56r² + 7r - 8r² - 8r - 1

56r³ + 56r² - 8r² + 7r - 8r - 1

56r³ + 48r² - 8r² - r - 1

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Round 23.017 to the nearest tenth

Answers

Well this would be 23.000 because you know that you can move a number up when the number next to it is more than 5 and the number 1 is next to the zero that is in the tenths place so that will become zero because it is less than 5.

A coin is tossed and a number cube labelled 1 to 6 is rolled. How many likely outcomes are there? Use a tree diagram

Answers

H T
/ / / \ \ \ / / / \ \ \
1 2 3 4 5 6 1 2 3 4 5 6

12 different outcomes
since each side can land with one number

Can you guys help me simply this

Answers

Simplify the expression.
Exact Form:
10
3
10
3
Decimal Form:
3.
¯
3
Mixed Number Form:
3
1
3

5/6 k equals 1/6 is the answer

Answers

$(5)/(6) k = (1)/(6)$

Refine

$(5)/(6) k = (5k)/(6)$

$(5k)/(6) = (1)/(6)$

Multiply both sides by 6 :

$(5k)/(6) *6= (1)/(6) *6$

$5k = 1$

Divide both sides by 5 :

$(5k)/(5) = (1)/(5)$

$k= (1)/(5)$

hope this helps!

Answer:

Step-by-step explanation:

Go to bed and let the boogeyman get you in your sleep hahahaha btw he will kill you like he almost did to me so have funnnnnnnnnnnn

Bella is planning to write in a journal. Some pages will have one journal entry on them, and other pages will have two journal entries on them. If Bella wants to make 10 entries, how many different ways can she write them in her journal?

Answers

The correct answer is:

6 ways.

Explanation:

She wants a total of 10 journal entries.

She can write each entry on a separate page, for 10 pages used.
She can write 8 entries on separate pages and 2 entries on 1 page, for 9 pages used.
She can write 6 entries on separate pages and 2 entries each on 2 separate pages, for 8 pages used.
She can write 4 entries on separate pages and 2 entries each on 3 separate pages, for 7 pages used.
She can write 2 entries on separate pages and 2 entries each on 4 separate pages, for 6 pages used.
She can write 2 entries each on 5 separate pages, for 5 pages used.

Answer: 6 ways

Step-by-step explanation:

Given : Bella is planning to write in a journal.

Some pages will have one journal entry on them, and other pages will have two journal entries on them.

Total required entries to make = 10

We can write 10 =10(1)+0

i.e. she can write one entry one journal entry on each page. → Way 1

10=8(1)+2(1)

i.e. she can write one entry one journal entry per page for 8 pages and 2 journal entries on one page .→ Way 2

10=6+4 = 6(1)+2(2)

i.e. she can write one entry one journal entry per page for 6 pages and 2 journal entries on 2 pages . → Way 3

10=4+6 = 4(1)+2(3)

i.e. she can write one entry one journal entry per page for 4 pages and 2 journal entries on 3 pages .→ Way 4

10=2+8 = 2(1)+2(4)

i.e. she can write one entry one journal entry per page for 2 pages and 2 journal entries on 4 pages .→ Way 5

10=0+10= 0+ 2(5)

i.e. she can write 2 journal entries on 5 pages . → Way 6

Hence, the total number of ways she can write them in her journal = 6

There are blue, red and green pencils in the box—20 pencils total. There are 6 times more green pencils than blue pencils. There are fewer red pencils than green pencils. How many pencils do you need to take out of the box in order to get at least one red pencil among them?

Answers

Answer:

Step-by-step explanation:

Try 1, 2, 3, or 4 blue pencils. Then green is 6 times as many. Red must be the rest to make up 20 total.

No. of blue No. of green No. of red

1 6 13

2 12 6

3 18 -1

You can't have 3 blue pencils because 3 blue + 18 green = 21 pencils, and there are only 20.

If you have 1 blue and 6 green, then there must be 13 red, but red must be less than green, and 13 is not less than 6.

The only possibility is

2 blue, 12 green, 6 red

If you start taking out pencils, when you take out the first 14 they may be all blues or green, so only when you take out the 15th pencil do you know for sure there must be 1 green pencil.

Other Questions

Evaluate each expression. When the answer is not a whole number, write your answer as a fraction.A.) (-4) ·(-6)B.)(-24) · (- 7/6)C.)4 ÷ (-6)D.) 4/3 ÷ -24

3x + 4y =10 6x -2y = 40

What is 42 increased by 50%

how much simple interest is earned on an investment of $1250 if the money is invested for 5 years at an annual interest rate of 4.5%