MATHEMATICS COLLEGE

I need an explanation so I can understand this because am very confused

Answers

Answer 1

Answer:

Answer:

Doesn’t go though origin

Step-by-step explanation:

It’s non proportional because the line doesn’t go though (0,0) being the origin

hope this helped :)

(if you still don’t understand ill try to explain further in the comments)

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Answers

Answer:

Answer to Let Bold Upper A equals Start 3 By 3 Matrix 1st Row 1st Column 1 2nd ... 1st Column 4 2nd Column 7 3rd Column 0 3rd Row 1st Column negative 4 ...

Step-by-step explanation:

Help please!!!!! asap

Answers

Answer:

$w \leq \: 26$

Step-by-step explanation:

$(9w - 4)/(5) \leq (7w + 2)/(4)$

First of all cross multiply

That's

$4(9w - 4) \leq5(7w + 2)$

Expand the terms

$36w - 16 \leq \: 35w + 10$

Add 16 to both sides

That's

$36w + 16 - 16 \leq \: 35w + 10 + 16 \n 36w \leq35w + 26$

Subtract 35w from both sides

We have

$36w - 35w \leq35w - 35w + 26 \n$

We have the final answer as

$w \leq \: 26$

Hope this helps you

red and blue ceramic tiles are laid according to a pattern such that every 21 red tiles used, 4 blue tiles are used. if a total of 425 tiles are used, how many of them are blue? setup a proportion for this scenario( use x for your unknown number of blue tiles).

Answers

Using proportions, it is found that there are 68 blue tiles.

This question is solved by proportions, using a rule of three.

For every 21 red tiles used, 4 blue tiles are used, hence, out of every 25 tiles, 4 are blue. How many blue tiles are there out of 425?

The rule of three is:

4 blue - 25 total

x blue - 425 total

Applying cross multiplication:

$25x = 4(425)$

$x = (4(425))/(25)$

$x = 68$

There are 68 blue tiles.

To learn more about proportions, you can check brainly.com/question/24372153

Final answer:

To determine the number of blue tiles used in a pattern, a proportion can be set up with the ratio of red to blue tiles and the total number of tiles. By setting the unknown number of blue tiles as x and cross-multiplying, we find that there are 68 blue tiles used.

Explanation:

To solve how many blue tiles are used, we can set up a proportion based on the given pattern. For every 21 red tiles, there are 4 blue tiles. If a total of 425 tiles are used, we can express this relationship as a fraction:

Red tiles : Blue tiles = 21 : 4

Since the total number of tiles is 425, we can express the unknown number of blue tiles as x. The number of red tiles would then be 425 - x. Our proportion is:

21 / 4 = (425 - x) / x

Cross-multiplication gives us:

21x = 4(425 - x)

Solving for x gives us:

21x = 1700 - 4x

21x + 4x = 1700

25x = 1700

x = 1700 / 25

x = 68

So, there are 68 blue tiles used.

Is 6.5892 a rational or irrational number

Answers

The number, 6.5892 , given that it ends, which fits the definition, is therefore a rational number.

What are rational numbers ?

A rational number is a number that can be expressed as a fraction of two integers, where the denominator is not 0. 6.5892 can be expressed as the fraction 65892/10000, which is a simplified fraction with an integer numerator and denominator.

An irrational number is a number that cannot be expressed as a fraction of two integers. Examples of irrational numbers include pi (π) and the square root of 2.

A simple reminder, Rational numbers can be written as fractions. Irrational numbers cannot be written as fractions.

Find out more on rational numbers at brainly.com/question/19079438

#SPJ3

6.5892 is a irrational number

You are on the market for a new car. You want to check whether there is a significant difference between the fuel economy of mid-size domestic cars and mid-size import cars. You sample 17 domestic car makes and find an average fuel economy of 34.904 MPG with a standard deviation of 4.6729 MPG. For imports, you sample 15 cars and find an average MPG of 28.563 MPG with a standard deviation of 8.4988. Construct a 90% confidence interval for the difference between the true average fuel economies in question. Assume the difference will represent (domestic - import). You can also assume that the standard deviations are statistically the same between the two populations.

Answers

Answer:

Step-by-step explanation:

Hello!

The objective is to test if there is a difference between the fuel economy of mid-size domestic cars and mid-size import cars.

For this there are two samples taken:

X₁: Fuel economy of a domestic car.

Sample 1

n₁= 17 domestic cars

X[bar]₁= 34.904 MPG

S₁= 4.6729 MPG

X₂: Fuel economy of an import car.

Sample 2

n₂= 15 import cars

X[bar]₂= 28.563 MPG

S₂= 8.4988 MPG

To estimate the difference between the average economic fuel of domestic cars and import cars, assuming both variables have a normal distribution and both population variances are unknown but equal, the statistic to use is a t-test for two independent samples with pooled sample variance:

(X[bar]₁-X[bar]₂)± $t_(n_1+n_2-2;1-\alpha /2) * (Sa*\sqrt{(1)/(n_1) +(1)/(n_2) } )$

$Sa^2= ((n_1-1)S_1^2+(n_2-1)S^2_2)/(n_1+n_2-2)$

$Sa^2= (16*(4.6729)^2+14*(8.4988)^2_2)/(17+15-2)= 45.35$

Sa= 6.73

$t_(n_1+n_2-2;1-\alpha /2) = t_(30; 0.95)= 1.697$

(34.904-28.563)± $1.697* (6.73*\sqrt{(1)/(17) +(1)/(15) } )$

6.341±1.697*2.38

[2.30;10.38]

With a confidence level of 90%, you'd expect that the difference between the average economic fuel of domestic cars and import cars will be contained in the interval [2.30;10.38].

I hope it helps!

A square is a figure with four sides of equal length and four right anglesa)conditional statement
b)postulate
c)definition
d)conjecture