(a).
-15ab-6ab^2
= -(15ab+6ab^2)
= -ab(15+6b)
= -3ab(5+2b)

(b).
6x(2y-5)-3(5-2y)
= 6x(2y-5)+3(2y-5)
= (6x+3)(2y-5)
= 3(2x+1)(2y-5)

Tip: If you want to check your answer for (a), you can always simplify it back and see whether it is same as the question.

Hope this helps : )

7 0

2 years ago

Find a. Round to the nearest tenth.

Anna007 [38]

Answer:

Step-by-step explanation:

Using the Law of Sines is the way to go, but before you we use it we need the measure of angle A.

180 - 102 - 28 = A so

A = 50 degrees. Now setting up the Law:

$\frac{sin50}{a} =\frac{sin28}{27}$ and cross multiply to get

27sin50 = asin28 and

$\frac{27sin50}{sin28}=a$ so

a = 44.1 cm

5 0

3 years ago

Check all like terms to 32xy

Olin [163]

Answer:

xy and 10xy

Step-by-step explanation:

4 0

3 years ago

Write a statement that indicates that the triangles in each pair are congruent.

emmasim [6.3K]

Answer:

Step-by-step explanation:

7 0

3 years ago