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Natasha_Volkova [10]

3 years ago

15

what equation is used to represent "three minus the difference of a number and one equals one-half of the difference of three ti

mes the same number and four"

1 answer:

sesenic [268]3 years ago

8 0

(n-1)-3=1/2(3n-4)
hope it hrlps

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In a certain city of several million people, 7.7% of the adults are unemployed. If a random sample of 300 adults in this city is

Lilit [14]

Answer: 0.2643

Step-by-step explanation:

Given : The proportion of adults are unemployed : p=0.077

The sample size = 300

By suing normal approximation to the binomial , we have

$\mu=np=300\times0.077=23.1$

$\sigma=\sqrt{np(1-p)}=\sqrt{300\times0.077(1-0.077)}\\\\=4.61749932323\approx4.62$

Now, using formula $z=\dfrac{x-\mu}{\sigma}$ , the z-value corresponding to 26 will be :-

$z=\dfrac{26-23.1}{4.62}\approx0.63$

Using standard distribution table for z , we have

P-value= $P(z\geq0.63)=1-P(z$

$=1-0.7356527=0.2643473\approx0.2643$

Hence, the probability that at least 26 in the sample are unemployed =0.2643

6 0

2 years ago

Find the slope of the line that passes through (6, 6) and (3, 4).

77julia77 [94]

Answer:

The answer is $\frac{2}{3}$ .

Step-by-step explanation:

The formula is supposed to be $\frac{y2-y1}{x2-x1}$ or $\frac{y1-y2}{x1-x2}$ , and if you do the math, the slope should be easy to solve.

8 0

2 years ago

What is 485,783 rounded to its greatest place?

natima [27]

Answer:

486

Step-by-step explanation:

if you mean 485.782 with a decimal then it would be 486

7 0

2 years ago

Solve for x: 2(x-3)+5=4-7(2x-1)

Marat540 [252]

Solve for x by simplifying both sides of the equation , then isolating the variable
your answer is x=3/4

3 0

2 years ago

What is the ordered pair for Point T?<br> A. (1,5)<br> B. (0,5)<br> C. (5,0)<br> D. (5, 5

sammy [17]

Answer:

B.(0,5)

Step-by-step explanation:

Ordered pairs are written as (x,y)

x value of T is 0

y value of T is 5

Ordered pair for point T is (0,5)

6 0

2 years ago