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3 years ago

I appreciate any help. I’m stumped.

Mathematics

2 answers:

victus00 [196]3 years ago

6 0

N = 8 because 2n = 16 and 16/2 = 8

Aleks04 [339]3 years ago

4 0

Answer:

n = 8.

Step-by-step explanation:

The 2 lines are the same length so

4n + 12 = 2n + 28

4n - 2n = 18 - 12

2n = 16

n = 8.

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10 POINTS Solve for x: 7-2x=9x+19 A.x = 11/12 B.x = -12/11 C.x = 1

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The answer is B. -12/11)

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3 years ago

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nataly862011 [7]

Answer:

8.75:1

Step-by-step explanation:

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2 years ago

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What is the equation in slope-intercept form of a line that passes through the points (5,3) (4,-3)

Darya [45]

Answer:

y=6x-27

Step-by-step explanation:

To find the slope of a line given 2 points; use this equation.

$\frac{y_2-y_1}{x_2-x_1} = \frac{rise}{run}$

(5,3) (4,-3)

$x_1 y_1$ $\\x_2 y_2\\\\$

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8 0

3 years ago

Twelve percent of U.S. residents are in their forties. Consider a group of nine U.S. residents selected at random. Find the prob

miskamm [114]

Answer:

The probability is 28 % ( approx )

Step-by-step explanation:

Since, there are only two possible outcomes in every trails ( residents are in their forties or not ),

So, this is a binomial distribution,

Binomial distribution formula,

Probability of success in x trials,

$P(x)=^nC_x p^x q^{n-x}$

Where, $^nC_x=\frac{n!}{x!(n-x)!}$

p and q are probability of success and failure respectively and n is the total number of trials.

Let X be the event of resident who are in his or her forties.

Here, p = 12% = 0.12,

⇒ q = 1 - p = 1 - 0.12 = 0.88,

n = 9,

Hence, the probability that two or three of the people in the group are in their forties = P(X=2) + P(X=3)

$^9C_2 (0.12)^2 (0.88)^{9-2}+^9C_3 (0.12)^3 (0.88)^{9-3}$

$=36(0.12)^2 (0.88)^7+84(0.12)^3 (0.88)^6$

$=0.279266611163$

$\approx 0.28$

$=28\%$

7 0

3 years ago

Anyone pls at least answer one question asap thks

Yuki888 [10]

Step-by-step explanation:

only 10 and 12. luck to you

6 0

3 years ago