Which expression is equivalent to 7 to the 3 power * 7 to the - 5 power

A: 72

B: 77

C: 1 over 7 to the 2nd power

D: 1 over 7 to the 7th power

The length of a rectangular garden is twice the width. If the perimeter is smaller than or equal to 900 feet, what is the greatest possible width of the garden.

A scientist has a sample of bacteria that initially contains 10 million microbes. He observes the sample and finds that the number of bacterial microbes doubles every 20 minutes.

Corey has a piece of fabric that is 1/4 yard long. He cuts the length into 2 equal pieces. Write an expression for the length, in yards, of each piece of fabric and solve

Is 2/5=5/10 correct or incorrect?

Why is 1/3 bigger than 4/5

Using side lengths only, could the triangles be similar? Triangle X Y Z. Side X Y is 1.5, X Z is 1, Z Y is 2. Triangle Q S R. Side Q R is 1, R S is 1.5, S Q is 0.5.

Mary found 98 seashells and 34 starfishes on the beach. She gave Nancy some of her seashells. She has 39 seashells left. How many seashells did she give to Nancy?

On a number line, will v 20 be closer to 44 or 4.57 Explain your reasoning.

How many terms are in the binomial expansion of (2x+3) ^3

besides spectators the capacity limit of victory stadium includes players, news reporters and stadium workers. how many nonspectators could be at a sold-out game