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AnnZ [28]
3 years ago
9

Fuel x costs $2 per gallon and fuel y costs $3 per gallon. You have at most $18 to spend on fuel. Write a system of linear inequ

alities to represent this situation.
(I did not mean to select one)

Mathematics
2 answers:
Natalka [10]3 years ago
8 0

Answer:

Hello, Your answer will be is A)

Hope That Helps!

madam [21]3 years ago
3 0

Answer:

First choice A : 2x +3y is <em>less than or equal </em><em>to</em><em> </em>18. x <em>greater</em><em> </em><em>than</em><em> </em><em>or</em><em> </em><em>equal</em><em> </em><em>to</em><em> </em>0. y <em>greater</em><em> </em><em>than</em><em> </em><em>or</em><em> </em><em>equal</em><em> </em><em>to</em><em> </em>0.

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Answer please........
Likurg_2 [28]

you have to show the graph

4 0
3 years ago
What is the value of the correlation coefficient r of the data set?
enyata [817]

The correct option will be:  C) 0.84

<u><em>Explanation</em></u>

Formula for Correlation coefficient :

r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}

First, for each point(x, y), we need to calculate x², y² and xy .

Then, we will find sum all x, y, x², y² and xy, which gives us Σx, Σy, Σx², ∑y² and Σxy

<em>(Please refer to the attached image for the table )</em>

Here we got, ∑x = 44 , ∑y = 183 , ∑x² = 362 , ∑y² = 6575 and ∑xy = 1480

'n' is the total number of data set, which is 7 here.

So, plugging those values into the above formula..........

r= \frac{n(\Sigma xy)-(\Sigma x)(\Sigma y)}{\sqrt{[n\Sigma x^2-(\Sigma x)^2][n\Sigma y^2-(\Sigma y)^2]}}\\ \\ r=\frac{7(1480)-(44)(183)}{\sqrt{[7(362)-(44)^2][7(6575)-(183)^2]}}\\ \\ r=\frac{10360-8052}{\sqrt{(598)(12536)}}\\ \\ r=\frac{2308}{\sqrt{7496528}}\\ \\ r=0.84

So, the value of the correlation coefficient is 0.84

4 0
3 years ago
Read 2 more answers
Simplify the expression 3x(4x^4 - 5x)
Soloha48 [4]
3x (4x^4-5x)
add all of the numbers with a x to get
12x^4
and 12x^4=
20736x
7 0
3 years ago
How do I log on the Roblox
Eva8 [605]

Answer:

Go to Roblox Login and Sign up first then you can log in to Roblox with an account

6 0
3 years ago
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Please help me!! 45 points!! Find the values of the variables in the figure. Thank you I really need this!!
Mice21 [21]

Answer:

x=2x, y=5y

Step-by-step explanation:

180-108=72+120=192,360-192=168

5 0
2 years ago
Read 2 more answers
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