First, the factor pairs for 18 are:
1, 18
2, 9
3, 6

Since the middle term is -3, the two factors must be 3 apart. The only pair that is 3 values apart is 3, 6.
Since the middle value is negative, the larger number is negative. This means that the 6 is negative.
z = -6
z = 3

Set each equal to 0;
z = -6
z + 6 = 0

z = 3
z - 3 =0
So your factors are (z+6) and (z-3), or answer B.

4 0

3 years ago

Solve V=1/3bh for b base of the cone

Wittaler [7]

Answer:

V = 1/3 * b * h...divide both sides by 1/3h

V / (1/3h) = b

3V/h = b

Step-by-step explanation:

8 0

3 years ago

Assume that two marbles are drawn without replacement from a box with 1 blue, 3 white, 2 green, and 2 red marbles. Find the prob

tatuchka [14]

Answer:

second marble is blue and first marble is white is $\frac{1}{7}$

Step-by-step explanation:

given data

two marbles

box = 1 blue, 3 white, 2 green, and 2 red marbles

solution

we get here second marble is blue and given that the first marble is white

= P(3c1 × 1c1) ÷ P(3c1 × 7c1) ................................................1

= 1c1 ÷ 7c1

= 1 ÷ 7

so second marble is blue and first marble is white is $\frac{1}{7}$

7 0

3 years ago