What is 2 halves equivalent to

The length of a rectangle is twice as long as width it the width is 8cm what is the peremeter of the rectangle?

True or false: The sum of the measures of any two angles of a triangle is always greater than the supplement of the third angle.

On. If Which function represents the percent concentration, y, of the final mixture? 0 Y= 0.1 (200).100 0.4% 0 0 0.1+0.4.100 200+X 0 0.1 (200) + 0.7 200 + x .100 in 200+%__.100 y = 0.1 (200) + 0.4%"

Joe's softball team was in a tournament. If a team lost one game they were eliminated. His team won the tournament, defeating four other teams. How many teams were entered in the tournament?

A furniture store has a chair originally priced at $78 on sale for $46. What is the percent of decrease rounded to the nearest tenth?

The sum of three consecutive even numbers is 30. what are the smallest of these numbers

You buy a calculator for $65. A 6% sales tax is added. Write and solve an equation to find the total price, t.

A health club charges a $50 initial fee, plus $2 for each visit. Marsha has spent a total of $144 at the health club this year. Write and solve an equation to find how many visits she has made.

Prove that a natural number n is a multiple of 8 if and only if the number formed by the last 3 digits of n is a multiple of 8.

A train travelled a certain journey and is supposed to arrive at midday. When its average speed is 40km/h, it arrives at 1pm. When its average speed is 48km/h, it arrives at 11am. What is the length of the journey?