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3 years ago

Is the dot on a number line for a greater than less than problem open or closed for an unequality

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

8 0

It would be open. :)

Gre4nikov [31]3 years ago

6 0

I always look at it this way....

> ---> open circle
<span>≥ ---> the line underneath is kind of a cheat sheet. If there is a "line" (....or equal to...), then you fill in the dot.</span>

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Sammy usually takes a 18 minute shower in the morning. If a 4 minute shower uses an average of 20-40 gallons of water, what is t

mylen [45]

D 180 gallons of water

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3 years ago

Read 2 more answers

Suppose y varies directly with x. if y=-3 when x=5 find y when x=-1

Scrat [10]

$\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ k}}&\cdot&x

&& y={{ k }}x
\end{array}
\\ \quad \\
\textit{we know that, when}
\begin{cases}
y=-3\\
x=5
\end{cases}\implies y=kx\implies (-3)=k(5)$

solve for "k", to find the "constant of variation",
then plug it back in the y = kx, to get the equation
now
what's is y when x = -1?
well, just plug that in the equation with the found "k" value,
to get "y" :)

3 0

3 years ago

Read 2 more answers

A || b what’s the value of X?

Anna007 [38]

<h3><u>Answer:</u></h3>

The value of x is 17.

<h3><u>Step-by-step explanation:</u></h3>

<u>We know that the lines are parallel because it is given that:</u>

a ∥ b

<u>Now, let's form an equation.</u>

=> 2x + 5 + 8x + 5 = 180

<u>Let's solve!</u>

=> 10x + 10 = 180
=> 10x = 170
=> x = 17

Hence, the value of x is 17.

$BrainiacUser1357$

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3 years ago

Over the last 24 months, Wendy has deposited the same amount of money in her bank account each month. If she deposited a total o

zysi [14]

Answer:

Step-by-step explanation:

Assuming she deposited the same amount each month.

Total ÷ Months = Amount Deposited Each Month

1,320 ÷ 24 = 55

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4 years ago

The number of girls at middle school Cyber summer camp was six more than twice the number of boys. The total of 156 middle schoo

Sloan [31]

Girls: 81
boys: 75

4x +6 = 156
4x = 150
x = 37.5
2x = 75

girls: 75 + 6
boys: x

7 0

3 years ago