All categories

3 years ago

Hey! i’ll give brainliest please help

Mathematics

2 answers:

Shkiper50 [21]3 years ago

8 0

(is a sentence fragment)

tekilochka [14]3 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

If f(x)=2x and g(x)=x^{2}-1, which statement is true?

Alona [7]

It is d
...............................................

3 0

4 years ago

27 39 51 63 what are the next numbers

Leviafan [203]

75 Every time it will add 12

5 0

3 years ago

I would like to create a rectangular orchid garden that abuts my house so that the house itself forms the northern boundary. The

chubhunter [2.5K]

Answer:

Length = $5\ \text{ft}$

Breadth = $5\ \text{ft}$

Step-by-step explanation:

Let $x$ be the length of the garden

and $y$ be the width of the garden

From the details of the cost in the question we get

$20x+2\times (10y)=200\\\Rightarrow 20x+20y=200\\\Rightarrow x+y=\dfrac{200}{20}\\\Rightarrow x+y=10\\\Rightarrow y=10-x$

Now area of the garden is

$A=xy\\\Rightarrow A=x(10-x)\\\Rightarrow A=10x-x^2$

Differentiating with respect to x we get

$\dfrac{dA}{dx}=10-2x$

Equating with 0

$0=10-2x\\\Rightarrow x=\dfrac{-10}{-2}\\\Rightarrow x=5$

Double derivative of the area is

$\dfrac{d^2A}{dx^2}=-2$

So, area is maximum at $x=5$

$y=10-x=10-5\\\Rightarrow y=5$

So, the length and breadth of the rectangle is $5\ \text{ft}$ .

5 0

3 years ago

The circumstance of a circle is 16 ft<br><br> The radius is_____ ft

kari74 [83]

Answer:

8ft

Step-by-step explanation:

Circumference of a circle equation; πd or2πr

16π = 2πr you can then divide both sides by π

16 = 2r then you can divide both sides by 2

8 = r

5 0

3 years ago

You are conducting a study of students doing work-study jobs on your campus. Among the questions on the survey instrument are th

Ann [662]

Answer:

Stratified sampling technique.

Step-by-step explanation:

The type of sampling technique being used is stratified sampling technique. This is a type of sampling where the population under study has a number of distinct categories or sub-groups in which it is divided into. These categories or sub-groups are called strata and are defined by certain characteristics related to the variable or particular finding under interest. The sampling frame can be organized into separate mutually exclusive strata and then each ‘stratum’ is sampled as an independent sub-population out of which individual elements can be randomly selected. In this case, each unit in a stratum, that is, each element in a group has a chance of being selected. With stratified sampling, the best result occurs when elements within strata are internally homogeneous.

8 0

3 years ago