Verify as an identity: cos (90°+x) = - sinx

I'm not sure how to go about this question

What the answer to 3 (x-4) = 2 (-2x+1)

The ratio of the corresponding linear measures of two similar cans of vegetables is 5 to 8. The smaller can has a surface area of 300 square centimeters. Find the surface area of the larger can.

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The Weights Of Adult Men In A Hypothetical Population Are Approximately Normally Distributed About A Mean Of 175 Lbs. With A Standard Deviation Of 15 Lbs.

A teacher wants to create a graph of the students' scores on the final exam and see what the distribution looks like. The teacher is interested in knowing what the median of the scores is on the exam as well as how spread out the scores are.

Solving - 4 (x+1) - 3=-3 (x-4) A-19 B19 C2 D0

Choose the expression that represents the indicated composition. f (x) = 10x g (x) = x - 3 (f º g) (x) = ? 10x - 30 10x - 3 10x2 - 30 10x2 - 30x

How many solutions are there to this equation in 5 (x+10) - 25=5x+25?

How do you find the two numbers Factor equation is between 10 and the quotient of 787 divided by 2

A stock investment went up $25/%$ in 2006. Starting at this increased value, what percent would it have to go down in 2007 to be back to its original price at the beginning of 2006?