18. Two pairs of parallel segments form the

"pound sign" on your telephone keypad. To find

the measures of all the angles in the pound sign,

how many angles must you measure? Explain.

Which equation shows the quadratic formula used correctly to solve 5x^2+3x-4=0 for x

Find the three arithmetic means between 7 and 21

A repeated-measures research study uses a total of 20 participants to compare two treatment conditions. If the results are used to construct a 95% confidence interval for the population mean difference, then the t values will bea) ±2.093b) ±2.

What is the definition of i? What do we use it for?

8x + 3y = 2 + 4x - 6y = - 7 O A. Multiply the bottom equation by 8. B. Multiply the top equation by 4. O C. Multiply the bottom equation by 2. O D. Multiply the top equation by 2.

When this polynomial is simplified, what is the coefficient of x: 10x^2+8x-6x^3+4x^2+12x^3-x+20 ... ?

A club is making posters to raise money. the printer charges a base fee of $270 and $2 per poster for supplies. a person sells each poster for $5. how many posters must he sell to make profit of $300?

Write ratio in simplest form 6:3/5

The section has a height of 7.5 cm. If the area of the section of glass is 17.25 cm2, how long is the base of the section?

A team won 7 of it's 12 games. What fraction of its game did the team win?