1. find the lcd of 3/5 and 1/6.
a. 5
b. 6
c. 11
d. 30
2. what is the difference between 3/7 and 1/14.
a. 1\2
b. 4/14
c. 5/14
d. 9/14
3. if sandy's cookie recipe calls for 1/3 cup of brown sugar and she increases it by 2/9 of a cup, how much brown sugar does she use?
a. 7/9 cup
b. 5/9 cup
c. 4/9 cup
d. 1/9 cup
4. what value could be added to 2/15 to make the sum greater than 1/2?
a. 1/15
b. 8/30
c. 5/15
d. 8/15
5. which set of mixed numbers has a difference less than 1?
a. 1 2/9, 1 1/9
b. 3 4/7, 2 1/7
c. 2 4/5, 1 1/3
d. 2 7/9, 1 1/3

1. D. 30

2. C.

3.  

4. D.

5. A.

Step-by-step explanation:

1. LCD or lowest common denominator for a set of fractions is lowest common multiple of all the denominators in that set of fractions

∴ for and LCD will be 5×6 = 30

2.

3. =

4.

5.

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct