HESI math

If 42.8 kg is divided into two parts, in a ratio of 7:2, how many kg is the smaller share?

7:2 ratio = 9 parts whole. 2/9*42.8=9.55

What does cc stand for and how do you convert?

1 cm^3=1ml

1 cm^3=

1 ml

cm^2=

1/1000L or .001

example of reciprocals

1/6X6/1

How many edges are in a a cube?

12

Given that a = 4, b = - 6 and c = 8, what is the value of (a+2c)(b+2c)?

Be careful with negatives when they are at beginning of equation. answer=200, NOT -200

A teacher has a rectangular piece of paper which is 52 cm long and 38 cm wide. She cuts the paper into squares, each measuring 5 cm by 5 cm. What is the largest number of whole squares she cuts?

Draw and round down to get answer

mnemonic for roman numerals

Lucky Cows Drink Milk 50, 100, 500, 1000

Is the square root of 2 a rational number?

NO; because it cannot be a ratio (ie divided)

Given that 6x = 7y, find the ratio x : y.

X=7Y/6--->X/Y=7/6 cross multiply. 6:7 ratio.

quotient

division

Is 3.12 rational or irrational

irrational

What graph has a proportional relationship?

one that crosses the y intercept.

The quotient of y and -25 is -100; find the value of y

quotient means divide. -y/25=-100=>2500

What is the numerator?

the top number of a fraction

T or F. quotient and product of both mean multiply

true

unit rate versus rate of change

unit, as in cost per unit or mph, will have single word in denominator. rate of change will have number, like proportion.