1. X/5 + 6 <2* A.X> 20 B.X-20 C.x<-20 D.x<20

Dean is ready to buy a new car. He has $24,000 to spend. The sales tax where he lives is 6%. He put his research on car prices i

mixer [17]

The most expensive car Dean can buy is the 4-door hatchback.

22500 x .06 = 13501350 + 22500 = 23850

5 0

3 years ago

Read 2 more answers

Determine the discriminant of x2 = 4. A. 17 B. 16 C. -15 D. -10

tino4ka555 [31]

The discriminant is b²-4ac
We can rewrite x² = 4 to x² + 0x - 4 = 0
So a = 1, b = 0, c = -4
Δ = 0 - 4 * 1 * -4
Δ = 16
The answer is B

6 0

3 years ago

Read 2 more answers

1. A new brand of hot dog claims to have a lower sodium content than the leading brand.

kherson [118]

Answer:

(a) Population mean = 314.5mg

(b) Margin of error = 21.281mg

(c) No, 350mg is not a plausible value

The new brand of hot dog has a lower sodium content on average than the leading brand

(d) Yes

Step-by-step explanation:

(a) Population mean = (370+326+322+297+326+289+293+264+327+331)/10 = 3145/10 = 314.5mg

(b) Margin of error = t×sd/√n

sd = 29.73, n = 10, degree of freedom = n-1 = 10-1 = 9

Assuming 95% confidence level

t-value corresponding to 9 degrees of freedom and 95% confidence level is 2.262

Margin of error = 2.262×29.73/√10 = 21.281mg

(c) No

Lower limit of new brand = 314.5 - 21.281 = 293.219mg

Upper limit = 314.5 + 21.281 = 335.781mg

The range of sodium content for the new brand of hot dog is between 293.219mg and 335.781mg which is lower than the leading brand (350mg)

(d) Margin of error = t×sd/√n

From the formula above, margin of error varies inversely as the square root of sample size

The smaller the sample size (n = 10) the larger the margin of error and the less accurate is the population mean

The larger the sample size (n = 40) the smaller the margin of error and the more accurate is the population mean

8 0

3 years ago

Which expressions go in which box?

almond37 [142]

To qualify as a polynomial, the expression in question:
* Consists of one or more terms
* Variables are only with positive whole exponents
* No variables in the denominator of any term (the coefficients however, can be fractions.)

In that case the answer is most likely:

3 0

3 years ago

What is the slope of the line?

KIM [24]

Answer:

Slope = $-\frac{1}{3}$

Step-by-step explanation:

6 0

3 years ago