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3 years ago

Don’t mind my computer but can someone help me pls!!!

Mathematics

1 answer:

mel-nik [20]3 years ago

5 0

I'm pretty sure the answer is the top right one because it looks really messed up. i mean, mi/hr*min doesn't equal mi, but im not too sure about the conversion part.

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How would you solve these if the X goes; -3,-2,-1,0,1,2,3 in a table format

prisoha [69]

You just have to plug in each value of x into the equation of 3x^2. Since y is a function, it is also written as f(x)

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3 years ago

If Sally walks 2 meter it takes her 1 second. If she walks 4 meters it takes her 2 seconds and 6 meters takes her 3 seconds. Is

KatRina [158]

Answer:

y=2x

Step-by-step explanation:

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8 0

3 years ago

A simple random sample of 10 paired values (x,y) yields the following statistical calculations: ∑x=108, ∑y=138, ∑(x2) =1249, ∑(y

lora16 [44]

The linear correlation coefficient is $r=1.054$

Explanation:

It is given that $\Sigma x=108$ , $\Sigma y=138$ , $\Sigma x^{2} =1249$ , $\Sigma y^{2} =2280$ and $\Sigma(x y)=1676$

Also, the random sample is $n=10$

The formula to determine the correlation coefficient is given by

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

Substituting the values in the formula, we have,

$r=\frac{10(1676)-(108)(138)}{\sqrt{\left[10(1249)-(108)^{2}\right]\left[10(2280)-(138)^{2}\right]}}$

Simplifying the values, we get,

$r=\frac{16760-14904}{\sqrt{\left[12490-11664\right]\left[22800-19044\right]}}$

Subtracting the values in both numerator and denominator, we have,

$r=\frac{1856}{\sqrt{\left[826\right]\left[3756\right]}}$

Multiplying the denominator,

$r=\frac{1856}{\sqrt{3102456}}$

Simplifying, we have,

$r=\frac{1856}{1761.4}$

Dividing, we get,

$r=1.054$

Thus, the linear correlation coefficient is $r=1.054$

7 0

3 years ago

A botanist is using two types of plants for an experiment. she writes inequalities to model the constraints on the number of eac

GrogVix [38]

The coordinates represent the numbers of plants of each type she can use and minimize the cost

Let x be the number of plants of one type.

y be the number of plants of the other type.

<h3>What is the meaning of the vertex of the feasible region?</h3>

The optimal solutions will occur at one or more of the extreme points this is the vertices of the feasible region.

We have, The vertex of the feasible region that results in the minimum value of the cost function is (5,39).

That means buying 5 of one type of plant and 39 of the other type of plant results in the lowest cost.

Thus the coordinates represent the numbers of plants of each type she can use and minimize the cost.

To learn more about the cost visit:

brainly.com/question/19104371

5 0

2 years ago

Read 2 more answers

Can someone help me !!

Daniel [21]

I had to do this question last year. The answer to this problem is 28 I’m pretty sure

3 0

3 years ago