Explain the difference between multiplying by powers of 10 when the exponent is a positive number and when the exponent is a negative number

Yesterday Bethany sent 60 text messages. she said that 15% of those messages were to her best friend. how many text messages did Bethany sent to her friend yesterday. explain your answer!

Solve the system of equations below algebraically. 2x + 3y = 6 - 5x+2y=4

Sum up 67 and 62, subtract therefrom 5. then multiply with 2.

What is 0.523 divided by 10 exponent 2?

C.) y=x2 + 4x - 1 a= b = c. Vertex Axis of Symmetry:

Yoku Is putting on sunscreen. He uses 2 ml to cover 50 cm² of his skin. He wants to know how many milliliters of sunscreen he needs to cover 325 cm² of the skin.

Find the measures of

Which value of x makes this inequality true? X + 9 < 4x

Find the value of f (-8) if:f (x) = 12x-29

How to explain that x/y can result in either a positive or negative quotient