All True or False Questions! Help is greatly appreciated!! :D a + b – b = a is an identity.

Multiplication and Division are inverse operations that undo each other. This enables them to be used to write identities such as 3 x 4 ÷ 4 = 3.

7 x 2 + 3 = 17 is an identity.

24 ÷ 3 + 4 = 12 is an identity.

4 x 3 ÷ 3 = 4 is an identity. Multiplication is repeated addition. So, 6 + 6 + 6 + 6 = 4 x 6

Division is repeated subtraction. So, 24 – 6 – 6 – 6 – 6 = 0

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.

249824

hope this !