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2 years ago

SOLVE ASAP PLEASE NO LINKS

Mathematics

2 answers:

Tju [1.3M]2 years ago

8 0

See the hollow circle mark over 2 ,It means < or >
Here arrow goes right so it's >

Hence inequality is x>2

Here same like above .
Inequality is x<2

Solid sphere means <= or >=

Here the inequality is

x>=2

Verdich [7]2 years ago

6 0

Answer:

Graph 1: x > 2, -x < -2

Graph 2: -x > -2, x<2

Graph 3: x ≥ 2, -x ≤ -2

Step-by-step explanation:

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18 POINTS! At the AoPS office, mice vary inversely with cats, that is, mice=k/cats, for some value of k. When there are 3r-19 ca

Blizzard [7]

Answer:

k=30

Step-by-step explanation:

The number of mice vary inversely with cats. This is written as:

$Mice \propto \dfrac{1}{Cat} \\Mice = \dfrac{k}{Cat}$

When there are 3r-19 cats, there are 2r+1 mice

$2r+1 = \dfrac{k}{3r-19}\\$Cross multiply$\\k=(3r-19)(2r+1)$

When there are 6r-27 mice, there are r-5 cats.

$6r-27 = \dfrac{k}{r-5}\\$Cross multiply$\\k=(6r-27)(r-5)$

Taking the values of k above, we have:

$k=(3r-19)(2r+1) =(6r-27)(r-5)\\(3r-19)(2r+1) =(6r-27)(r-5)\\6r^2+3r-38r-19=6r^2-30r-27r+135\\$Collect like terms\\6r^2-6r^2+3r+30r-38r+27r-19-135=0\\22r-154=0\\22r=154\\$Divide both sides by 22\\r=7$

Therefore:

$k=(3r-19)(2r+1) \\=(3*7-19)(2*7+1)\\=(21-19)(14+1)\\=2*15\\k=30$

8 0

3 years ago

X = 0.5<br> Solve please

faltersainse [42]

Answer:

2x-1=0

Step-by-step explanation:

x-0.5=0

10x-5=0

2x-1=0

4 0

3 years ago

PLEASE I NEED THE ANSWER DON'T IGNORE MY QUESTION!!!

Dima020 [189]

Answer:

$so \: area = \pi \times {r}^{2} \\ = \pi \times {3}^{2} \\ = 9\pi \: {units}^{2}$

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3 years ago

at the movies,adults tickets cost 12.00 and kids tickets cost 9.00 a group of students and adults chaperone came and spent a tot

Eddi Din [679]

There would be 30 kid tickets and 4 adult tickets .. if you take 12 times that by 4 you get 48 .. then take 48 from 318 and you get 270 then divide that by 9 and get 30 .. 30 plus 4 is 34 tickets

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4 years ago

One pencil is randomly selected from a case containing 3 red, 4 green, 2 black and 6 blue pencils. What is the probability of a

matrenka [14]

First off, you add the total amount of pencils which is as follows:

3+4+2+6=15

There are 15 pencils

There are 4 green pencils so the comparison/probability is equivalent to the following:

4:15, $\frac{4}{15}$ , 26%

4 0

3 years ago