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3 years ago

Hugo paid $4.50 for 6 books, if he paid 2.25 how many books did he get?

Mathematics

1 answer:

Vlad1618 [11]3 years ago

5 0

Answer:

2 or 3 books

Step-by-step explanation:

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Which graph represents y=⌈x⌉over the domain 2≤x≤5 ?

ludmilkaskok [199]

Answer:

good job❤

Step-by-step explanation:

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3 years ago

Read 2 more answers

Good afternoon or morning! Need some help with geometry.

11111nata11111 [884]

Answer:

x = 20.2

Step-by-step explanation:

sin = opposite / hypotenuse

sin 63° = 18/x
x = 18 / sin 63°
x = 20.2

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2 years ago

Monica is counting books she has three stacks of some number of books and then 5 more books off to the side. Write a. Expression

AlladinOne [14]

Answer: n= number of books

n+5=?

Step-by-step explanation:

7 0

3 years ago

If the area of a circle is 20.4 units squared, what is the radius?

dmitriy555 [2]

Answer:

r = 2.55

Step-by-step explanation:

The formula for finding the radius of a circle using the area is r = √A/π

with the r being the radius. the A being the area, and the π being pi (we'll use 3.14).

So the equation should look like this:

r = √(20.4/3.14)

Find the quotient of 20.4/3.14 and round to the nearest tenth

r = √6.5

Find the square root and round to the nearest hundredth

r = 2.55

6 0

3 years ago

SUppose the total cost C(x) to manufacture a quantity x of insecticide (in hundreds of liters) is given by

Hitman42 [59]

Answer:

a) $C(x)$ is increasing in two regions: (i) $(+\infty, 8\,s)$ and (ii) $(10\,s,+\infty)$ .

b) $C(x)$ decreases in $(8\,s, 10\,s)$ .

Step-by-step explanation:

Let $C(x) = x^{3}-27\cdot x^{2}+240\cdot x +850$ , where $x$ is the quantity of insecticide, measured in hundreds of liters, and $C(x)$ is the total manufacturing cost as a function of the quantity of the insecticide, measured in US dollars. A possible approach to determine which regions of $C(x)$ are decreasing and increasing by means of the first derivative and graphing tools. The first derivative of the function is:

$C'(x) = 3\cdot x^{2}-54\cdot x+240$ (1)

Please notice that regions where C(x) is increasing has $C'(x) > 0$ , whereas $C'(x) < 0$ when $C(x) < 0$ .

We notice that $C(x)$ is increasing in two regions: (i) $(+\infty, 8\,s)$ and (ii) $(10\,s,+\infty)$ . Besides, $C(x)$ decreases in $(8\,s, 10\,s)$ .

6 0

3 years ago