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3 years ago

During the sale, the price of the book was marked down 20 percent.

Mathematics

2 answers:

kap26 [50]3 years ago

8 0

Answer:

$ $576$

Step-by-step explanation:

$480+20%$ %= $576$

Thanks for getting me to the next rank : )

zepelin [54]3 years ago

7 0

Answer:

$576

Step-by-step explanation:

Because the sales price was $480, and the book was marked down 20%, we have to add 20%. 480+20% is now $576.

Thus, the answer is $576.

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As discussed in Exercise 6.10, the General Social Survey reported a sample where about 61% of US residents thought marijuana sho

Maslowich

Answer: 2285

Step-by-step explanation:

Formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_c}{E})^2$

, where p = prior estimate of population proportion.

E= Margin of error.

$z_c$ = z-value for confidence interval of c.

Given : Confidence interval : 95%

From the z-value table , the z-value for 95% confidence interval = $z_c=1.96$

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal.

i.e. the prior estimate of population proportion of US residents thought marijuana should be made legal : p=0.61

[∵ sample proportion is the best estimate for population proportion.]

Margin of error : E= 2%=0.02

Now, the required minimum sample size would be :-

$n=0.61(1-0.61)(\dfrac{1.96}{0.02})^2$

Simplify ,

$n=0.2379\times9604=2284.7916\approx2285$

Thus , we need to survey <u>2285</u> Americans .

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3 years ago

Fundamental Theorem Algebra II

Rama09 [41]

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8 0

3 years ago

Can I get some help on this

nordsb [41]

Answer: Choice C

The vertical asymptote at x = -4 tells us that -4 is not part of the domain. This only applies to 1/(x+4). If we plug in x = -4, we get...

f(x) = 1/(x+4)
f(-4) = 1/(-4+4)
f(-4) = 1/0
f(-4) = undefined; because of the division by zero error

The value x = -4 is allowed in the other answer choices.

5 0

4 years ago

Each classmates contributes $2 for charity Write an expression for the amount of money raised by your class

Alecsey [184]

$2*S=A
S=Student
A=Total amount

3 0

3 years ago

Read 2 more answers

A rectangle measures 54 feet by 72 feet. What is the length, in feet, of

igomit [66]

length (l) =54

breath (b) =72

l²+b²= diagonal²..........(Pythagoras theorem) and (all sides of rectangle are 90degree)

(54)²+(72)²=diagonal²

2916+5184=diagonal²

8100=diagonal²

90= diagonal.............(taking square root)

length of diagonal is 90ft

i hope it helps

have a nice day and thanks for asking this question

6 0

3 years ago