The mathematical statement 4 c A means

Prove that sin alpha * sin (90 - alpha) - cos (90-alpha) * cos alpha

Gary mails 10 of the power of 3

What is 1/2 <___ < 4/5?

If the same number is subtracted from both the numerator and the denominator of 7/11, the result is 1/2. Find the number.

What is the line of semmetry for the parabola whose equation is y = x^2 + 10x=25

Katie is making covers for metal nameplates. She needs to know how much plastic, at minimum, she'll need to fully cover 30 nameplates. Each nameplate has an equilateral triangle on either end with a height of 2.6 inches and base of 3 inches.

Why does a lawn mower live such a hard life?

Solve 6x^2 + 10x - 4 = 0

Nick works two jobs to pay for college. He tutors for $15 per hour and also works as a bag boy for $8 per hour. Due to his class and study schedule, Nick is only able to work up to 20 hours per week but must earn at least $150 per week.

Use t = 3 and t = 7 to determine if 6t + 12 and 6 (t + 2) are equivalent. Which statements are true? Check all that apply.