2 years ago

What is the solution set of 4x 2 - 36 = 0? A.{-3} B.{3} C.{-3, 3}

2 answers:

5 0

It is short work to check the answer choices.
4*3² -36 = 0 . . . . yes, so +3 is a solution
4*(-3)² -36 = 0 . . . . yes, so -3 is a solution

The appropriate choice is ...
C. {-3, 3}

Nimfa-mama [501]2 years ago

4 0

4x^2 - 36 = 0
4x^2 = 36
x^2 = 9
x = 3 or -3
the answer is C

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Margaret has 16 yards of fabric and she is making dresses for z doll write the expression for the length of fabric used for each

emmasim [6.3K]

<h3>The expression for the length of fabric used for each doll is $\frac{16}{z}\ yards$ </h3>

<em><u>Solution:</u></em>

Given that,

Margaret has 16 yards of fabric

she is making dresses for z doll

Therefore,

Total length of fabric = 16 yards

Number of dresses = z dolls

Therefore,

$\text{ length of fabric used for each doll } = \frac{ \text{ Total length of fabric }} {\text{ z dolls }}\\\\\text{ length of fabric used for each doll } = \frac{16}{z}\ yards$