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3 years ago

Factor. Z^2- 3z – 18

Mathematics

2 answers:

Alecsey [184]3 years ago

4 0

Answer:

(z-6)(z+3)

Step-by-step explanation:

vodka [1.7K]3 years ago

4 0

Answer:

Step-by-step explanation:

z^2-6z + 3z -18

z(z-6)+3(z-6)

(z+3)(z-6)

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You have a bag of 12 marbles. Four are blue, 6 are green, 2 are red, and the others are yellow. What is the probability of drawi

8090 [49]

Answer:

$Probability = \frac{1}{11}$

Step-by-step explanation:

Given

$Blue = 4$

$Green = 6$

$Red = 2$

$Total = 12$

Required

Determine the probability of drawing red and green without replacement

This is calculated as follows:

$Probability = P(Red\ and\ Green)$

$Probability = P(Red)\ and\ P(Green)$

$Probability = \frac{n(Red)}{Total} * \frac{n(Green)}{Total - 1}$

We used Total - 1 because it's a probability without replacement:

$Probability = \frac{2}{12} * \frac{6}{12- 1}$

$Probability = \frac{2}{12} * \frac{6}{11}$

$Probability = \frac{1}{6} * \frac{6}{11}$

$Probability = \frac{1}{11}$

Hence, the required probability is 1/11

5 0

3 years ago

3 x (7 + ?) = 21+ 6

zvonat [6]

Answer:

Step-by-step explanation:

21+6=27

3x9=27

4 0

3 years ago

Find the value of x diicmabajamnfkwbxjxn

goldenfox [79]

Because the two lines parallel, so we have x+40=3x-10
Or 3x-x=40+10
And 2x=50, so we obtain x=25
That is the answer

8 0

3 years ago

Math question! Help needed!

katrin2010 [14]

When you translate a graph to the left you ADD a number in the power.
Since the power is already x - 1, add 7 to -1 and get x + 6
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3 years ago

A wall shaped like a trapezoid needs to be painted. the height of the wall is 16 feet and the bases are 20 feet and 24 feet. if

AURORKA [14]

Area of Trapezoid = h(b1+b2/2)
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Area = 16(20+24/2)=352 Square Feet

352/20=17.6 Cans of paint.

Hope this helps and is correct, I haven't done this kind of math in a while.

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3 years ago