Suzanna wants to measure a board, but she doesn't have a ruler to measure with. However, she does have several copies of a book that she knows is 17 centimeters tall. a. Suzanna lays the books end to end and finds that the board is the same length as 21 books. How many cenimeters long is the board?

Answers

Answer 1

Answer:

Answer: Board is 357 cm long.

Step-by-step explanation:

Since we have given that

Suzanna wants to measure a board but she doesn't have a ruler to measure with,So she has several copies of a book that she knows is 17 cm tall where She lays the books end to end to find the length of board which is the same length as 21 books.

So,

Number of books = 21

Length of board of each book = 17 cm

According to question, we need to find the length of board for 21 books:

Length of board is given by

$21* 17\n\n=357\ cm$

Hence, Board is 357 cm long.

Answer 2

Answer: Answer=357centimeters

21*17=357cm

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Please help with this thanks
I need help on another one 17
(–x2 + 9) + (–3x2 – 11x + 4)=
An item is purchased for a wholesale price of $48 and will be sold at a 55 percent markup. Which expression should be used to find the amount of the markup?

How many meters are in 1000 millimeters? 1 10 100 10000

Answers

1000 millimeters = 1 meter

1 millimeter equals 0.001 meters, so we can multiply the meters by 1000.

0.001 × 1000 = 1

Therefore, 1 meter is in 1000 millimeters.

The conversion of 1000 millimeters to meters is: 1 meter

How to carry out unit conversion?

There are different methods of unit conversion such as:

gram to kilogram

centimeter to meter

liters to centiliters

Newtons to kilonewtons

Now, we want to find out how many meters are in 1000 millimeters.

We know that:

1 millimeter = 0.001

Thus:

1000 millimeter = 1000 * 0.001/1

= 1 m

Read more about Unit Conversion at: brainly.com/question/30403428

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Please solve the problem.

Answers

OK. I did it, and I have the solution.
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The length of the deck is (5 + 2x) .
The width of the deck is   (4 + 2x) .

If the deck didn't have that big hole in the middle where the pool is,
then its area would be

   (5 + 2x) · (4 + 2x) .

When you multiply that all out, you get    Area = 4x² + 18x + 20

and the question tells us that the area of the whole big rectangle is 90 yds² .
So we can write

   4x² + 18x + 20 = 90 .

Subtract 90 from each side:    4x² + 18x - 70 = 0
Divide each side by 2 :    2x² + 9x - 35 = 0

You can use the quadratic equation to solve that and find out that
x = 2.5 yards, and that's what the question is asking you.
___________________________________________________

That makes the deck 10 yds high and 9 yds wide.

Total area of the whole big rectangle, (deck + pool ), = 90 yds².

What is the discriminant in the quadratic equation x2 + 11x + 121 = x + 96? A. 0 B. 100 C. 20 D. 200

Answers

Given:
x² + 11x + 121 = x + 96

First, we need to convert it into a quadratic equation.

x² + 11x - x + 121 - 96 = 0
x² + 10x + 25 = 0

a = 1 ; b = 10 ; c = 25

Quadratic formula:

x = (-b + (√b² - 4ac)) ÷ 2a

The discriminant is under the radical sign

discriminant ⇒ b² - 4ac ⇒ 10² - 4(1)(25) ⇒ 100 - 100 = 0

Correct answer is A. 0

x² + 11x + 121 = x + 96

x² + 11x - x + 121 - 96 = 0

x² + 10x + 25 = 0. Compare to ax² + bx + c = 0.

a = 1, b = 10, c = 25.

Discriminant, Δ = (b² - 4ac)

= (10² - 4*1*25)

= (100 - 100)

= 0.

Discriminant = 0

Option A.

A boat travels 444 miles in 13 hours (with a constant speed). How much time will it take traveling 226 miles?