All categories

3 years ago

!! THIS IS MULTIPLE CHOICE AND I RAISED THE POINTS LMA.O IT WONT LET ME TYPE THE PROBLEMS ACTUAL NAME CUZ ITS "INAPPROPRIATE" !!

Mathematics

1 answer:

Svet_ta [14]3 years ago

6 0

r(b) = 12b

c(b) = 4 + 3.3b

I think profit is revenue minus the cost, so p(b) = r(b) - c(b)

= 12b - (4 + 3.3b)

12b - 4 - 3.3b //Combine like terms

8.7b - 4

Answer: D

//Hope it helps and it's right.

You might be interested in

Mr. Gill is draining his pool. The pump he is using changes the water level by −2 1/4 inches per hour. A stronger pump would dra

professor190 [17]

Answer:

-5.625 in/hour

Step-by-step explanation:

−2 1/4 * 2 1/2 = -5.625 in/hour

7 0

3 years ago

A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

denis23 [38]

Area of a square = side^2
area = 6.25^2 = 39.0625 square feet

= 39.06 (rounded)

4 0

2 years ago

Which of the choices below is not a possible correlation coefficient?

fiasKO [112]

Answer:

The condition for r is the following:

$-1 \leq r \leq 1$

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

Step-by-step explanation:

The correlation coefficient is a measure of dispersion and is a value between -1 and 1, and is defined as:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

The condition for r is the following:

$-1 \leq r \leq 1$

And for this case if we analyze the options the only impossible value is given by:

1.0528

Because this value is higher than 1 and not satisfy the general limits for r

8 0

3 years ago

Use the discriminant to determine the nature of the roots of the following questions

soldier1979 [14.2K]

Answer:

the function has two distinct real roots.

Step-by-step explanation:

D=b²-4ac

D<0 No real roots

D=0 One real root

D>0 Two distinct real root.

(-5)²-4*1*-3

25+12

Since D is > than 0, the function has two distinct real roots.

6 0

3 years ago

Suppose that $2000 is invested at a rate of 4%, compounded semiannually. Assuming that no withdrawals are made, find the total a

creativ13 [48]

Answer:

Step-by-step explanation:

A = P(1+r/n)^ nt

A = 2000(1+.04/2)^(5*2)

A = $2000(1.02)^{10}$ = $2437.99

5 0

3 years ago