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3 years ago

Factor 3x² - 9x - 12

Mathematics

2 answers:

cestrela7 [59]3 years ago

7 0

Step-by-step explanation:

$(3x - 12)(x + 1)$

Murrr4er [49]3 years ago

6 0

Answer:

3(x-4)(x+1)

Step-by-step explanation:

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the radio of used cars at a dealership is 7:5. if the dealership has 156 cars on the lot , how many are new ?

Serggg [28]

Answer:

91 used

65 new

Step-by-step explanation:

7 + 5 = 12

156/12 = 13

7(13) = 91

5(13) = 65

3 0

2 years ago

How do I graph y=2x if there is only slope

lord [1]

There is an invisible +0 at the end. this means the y intercept is 0

3 0

3 years ago

Select all possible values of b.

lutik1710 [3]

Answer:

B? I am confused.

Step-by-step explanation:

7 0

3 years ago

What is the slope for (-6,4) and (2,12)

Romashka-Z-Leto [24]

Answer:

Step-by-step explanation:

(-6,4) and (2,12)

slope = m = (y2 - y1) / (x2 - x1)

= 12 - 4 / 2 - (-6)

= 8/8

= 1

5 0

3 years ago

Suppose that documentation lists the average sales price of a single-family home in the metropolitan Dallas/Ft. Worth/Irving, Te

Julli [10]

Answer:

"0.0373" seems to be the appropriate solution.

Step-by-step explanation:

The given values are:

n₁ = 43

n₂ = 35

$\bar{x_1}=217800$

$\bar{x_2}=204700$

$\sigma_1=30300$

$\sigma_2=33800$

Now,

The test statistic will be:

⇒ $Z=\frac{\bar{x_1}-\bar{x_2}}\sqrt{\frac{\sigma_1^2}{n_1} +\frac{\sigma_2^2}{n_2} }$

On substituting the given values in the above formula, we get

⇒ $=\frac{217800-204400}{\sqrt{\frac{(30300)^2}{43} +\frac{(33800)^2}{35} } }$

⇒ $=\frac{217800-204400}{\sqrt{\frac{918090000}{43} +\frac{1142440000}{35} } }$

⇒ $=\frac{13400}{7347.93}$

⇒ $=1.7828$

then,

P-value will be:

= $P(Z>1.7828)$

= $0.0373$

8 0

2 years ago