MATHEMATICS
MIDDLE SCHOOL

Answer:

You can infer from this problem that the shape of the wooden plank is a rectangle based on the dimensions given. The length of a rectangle is usually the longest side of the rectangle so you can conclude that the length of the rectangle is 12.5 cm. Therefore, the width is 8.5 cm.

Answer: The length of a rectangle is usually the longest side of the rectangle so you can conclude that the length of the rectangle is 12.5 cm the width is 8.5 cm.

HIGH SCHOOL

A galaxy has about two billion stars. If 1% will turn into black holes, approximately what number of stars will turn into black holes?

2,000,000 stars will turn into blackholes

The answer is 20,000,000 because you would multiply .01 by 2,000,000,000

MIDDLE SCHOOL

Veronica found the number of lines of symmetry for the diamond shape. How many lines of symmetry does it have?

2 because you can evenly split it in half 2 different ways

MIDDLE SCHOOL

Solve the following equation by factoring. 2x 2 - 5x - 12 = 0

2x^2 - 5x - 12 = 0

(2x + 3)(x - 4) = 0

2x+3 = 0; x = -3/2

x - 4 = 0; x =4

answer

x = 4 and x = -3/2

(2x + 3)(x - 4) = 0

2x+3 = 0; x = -3/2

x - 4 = 0; x =4

answer

x = 4 and x = -3/2

Hey there!

Here are the steps to solve this equation by factoring...

2x² - 5x - 12 = 0

(2x + 3)(x - 4) = 0

2x + 3 = 0 x - 4 = 0

2x = -3 x = 4

x = -3/2

I hope this helps! ^__^

Here are the steps to solve this equation by factoring...

2x² - 5x - 12 = 0

(2x + 3)(x - 4) = 0

2x + 3 = 0 x - 4 = 0

2x = -3 x = 4

x = -3/2

I hope this helps! ^__^

HIGH SCHOOL

In many instances, it is possible to use both fractional and decimal forms to multiply and divide. What are the advantages and disadvantages of using each form? Explain your answer. ...?

When multiplying a fraction, you just have to multiply the numerator and the denominator with the number you are multiplying. On the other hand, when multiplying decimals, you have to multiply it vertically and put the decimal point in the right place. I would have to say that multiplying fractional forms is easier. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.