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Rom4ik [11]
3 years ago
11

Can some help me, please? ​

Mathematics
1 answer:
kkurt [141]3 years ago
5 0

Since value of k is same for y/x for all values in the table so, y varies directly with x

And equation is: y=-2.25\,x

Step-by-step explanation:

We need to find if y varies directly with x from the values given in the table.

If y varies directly with x then we have the equation:

y=k\,x

where k is constant of proportionality

or we can write

\frac{y}{x}=k

If k is same for all values of x and y when (y/x=k) then we can say that y varies directly with x.

if x = -20 and y=45 then k is:

\frac{45}{-20}=-2.25

So, value of k is -2.25

if x = 1 and y=-2.25 then k is:

\frac{-2.25}{1}=-2.25

So, value of k is -2.25

if x = 12 and y=-27 then k is:

\frac{-27}{12}=-2.25

So, value of k is -2.25

Since value of k is same for y/x for all values in the table so, y varies directly with x

And equation is: y=-2.25\,x

Keywords: Direct Relationship

Learn more about Direct Relationship at:

  • brainly.com/question/10708697
  • brainly.com/question/2678748

#learnwithBrainly

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Can u pls help me with this question ​
san4es73 [151]

Answer:

The correct answer is D, 6/8.

Step-by-step explanation:

For ratios or fractions an equivalent fraction has the same value but just more pieces. Think of it like a pizza. But to make sure they are equivalent you have to multiply or divide them by a fraction equal to 1. In other words the numerator and the denominator have to be the same number. So, when we multiply 3/4 by 2/2 you get 6/8 because 3 x 2 = 6 (numerators) and 4 x 2 = 8 (denominators).

If you have any additional questions please don't hesitate to ask me or your teacher to be sure you master the subject. Stay safe and please mark brainliest! :)

3 0
2 years ago
Calculate the area of each shape below. Figures are not drawn to scale.
STatiana [176]

Answer:

The area of the triangle is 168 meters

Step-by-step explanation:

<u>Formula to find the area of a triangle:</u>

<em>Area = 1/2 Base x Height</em>

<u>So, first you need to identify the base and the height. The base is 16m + 8m, and the height is 14m. All you have to do is plug in the numbe</u>rs:

Area = 1/2 (16 + 8) x 14

<u>Then, you solve:</u>

Area = 1/2 (16 + 8) x 14

Area = 1/2 24 x 14

Area = 1/2 336

Area = 168 meters

So, the area of the triangle is 168 meters

6 0
3 years ago
Hanna has 44 minutes to get ready for school she spends x minutes getting dress what's an expression that represent the number o
Goshia [24]
44-x= amount of time left
7 0
3 years ago
I don't know what to do I'm very confused ​
finlep [7]

Answer:

x = 33.8°

Step-by-step explanation:

The resulting diagram we have is a right triangle. To find x, apply trigonometric function.

Reference angle = x

Opposite = 116

Adjacent = 173

Apply TOA:

Tan x = Opp/Adj

tan (x) = \frac{116}{173}

x = tan^{-1}(\frac{116}{173})

x = tan^{-1}(\frac{116}{173})

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7 0
2 years ago
Discuss how these two branches of statistics will provide different capabilities and impacts in your engineering discipline. Pro
Makovka662 [10]

Answer:

Key Differences Between Descriptive and Inferential Statistics:

The difference between descriptive and inferential statistics can be drawn clearly on the following grounds:

Descriptive Statistics is a discipline which is concerned with describing the population under study. Inferential Statistics is a type of statistics; that focuses on drawing conclusions about the population, on the basis of sample analysis and observation.

Descriptive Statistics collects, organises, analyzes and presents data in a meaningful way. On the contrary, Inferential Statistics, compares data, test hypothesis and make predictions of the future outcomes.

There is a diagrammatic or tabular representation of final result in descriptive statistics whereas the final result is displayed in the form of probability.

Descriptive statistics describes a situation while inferential statistics explains the likelihood of the occurrence of an event.

Descriptive statistics explains the data, which is already known, to summarise sample. Conversely, inferential statistics attempts to reach the conclusion to learn about the population; that extends beyond the data available.

Ex. Of 350 randomly selected people in the town of Luserna, Italy, 280 people had the last name Nicolussi. An example of descriptive statistics is the following statement :

"80% of these people have the last name Nicolussi."

Ex. Of 350 randomly selected people in the town of Luserna, Italy, 280 people had the last name Nicolussi. An example of inferential statistics is the following statement :

"80% of all people living in Italy have the last name Nicolussi."

We have no information about all people living in Italy, just about the 350 living in Luserna. We have taken that information and generalized it to talk about all people living in Italy. The easiest way to tell that this statement is not descriptive is by trying to verify it based upon the information provided.

6 0
2 years ago
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