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3 years ago

Which phrase is NOT a way to state the meaning of the expression x – 3?

2 answers:

7 0

The third one is true

because 3 is subtracted from a number.if you say that a number subtract from 3 it will be:

3–x

good luck

gavmur [86]3 years ago

7 0

Answer:

A number subtracted from 3 phrase is NOT a way to state .

Step-by-step explanation:

Given : Expression x – 3.

To find : Which phrase is NOT a way to state the meaning of the expression.

Solution : We have given

x - 3

We may write it as The difference of a number and 3 and A number minus 3 ,

3 less than a number,

But we can not state as A number subtracted from 3 because it mean

3 - x .

Therefore, A number subtracted from 3 phrase is NOT a way to state .

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Lot the points (0, −2) and (4, 1) on the coordinate plane.

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3 years ago

What is seventy-nine divided by twenty-five.

Elodia [21]

3.16 is the correct answer

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2 years ago

Read 2 more answers

A tank initially contains 60 gallons of brine, with 30 pounds of salt in solution. Pure water runs into the tank at 3 gallons pe

adoni [48]

Answer:

the amount of time until 23 pounds of salt remain in the tank is 0.088 minutes.

Step-by-step explanation:

The variation of the concentration of salt can be expressed as:

$\frac{dC}{dt}=Ci*Qi-Co*Qo$

being

C1: the concentration of salt in the inflow

Qi: the flow entering the tank

C2: the concentration leaving the tank (the same concentration that is in every part of the tank at that moment)

Qo: the flow going out of the tank.

With no salt in the inflow (C1=0), the equation can be reduced to

$\frac{dC}{dt}=-Co*Qo$

Rearranging the equation, it becomes

$\frac{dC}{C}=-Qo*dt$

Integrating both sides

$\int\frac{dC}{C}=\int-Qo*dt\\ln(\abs{C})+x1=-Qo*t+x2\\ln(\abs{C})=-Qo*t+x\\C=exp^{-Qo*t+x}$

It is known that the concentration at t=0 is 30 pounds in 60 gallons, so C(0) is 0.5 pounds/gallon.

$C(0)=exp^{-Qo*0+x}=0.5\\exp^{x} =0.5\\x=ln(0.5)=-0.693\\$

The final equation for the concentration of salt at any given time is

$C=exp^{-3*t-0.693}$

To answer how long it will be until there are 23 pounds of salt in the tank, we can use the last equation:

$C=exp^{-3*t-0.693}\\(23/60)=exp^{-3*t-0.693}\\ln(23/60)=-3*t-0.693\\t=-\frac{ln(23/60)+0.693}{3}=-\frac{-0.959+0.693}{3}= -\frac{-0.266}{3}=0.088$

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3 years ago

A pound of coffee costs $14.99what is the cost per ounce

alexdok [17]

There are 16 oz in a Pound. Take 14.99 and divide it by 16. This will give you the cost per oz. 14.99/16= .936875

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3 years ago

If f(x)=x^2 is horizontally compressed to g(x), which could be the equation of g(x)?

leva [86]

For the definition of horizontal compression, the function f(x) = x² is horizontally compressed to the function g(x) = (k · x)², for 0 < k < 1.

<h3>How to find the resulting equation after applying a compression</h3>

Here we must narrow a given function by a rigid operation known as compression. Rigid transformations are transformations in which Euclidean distances are conserved. In the case of functions, we define the horizontal compression in the following manner:

g(x) = f(k · x), for 0 < k < 1 (1)

If we know that f(x) = x², then the equation of g(x) is:

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For the definition of horizontal compression, the function f(x) = x² is horizontally compressed to the function g(x) = (k · x)², for 0 < k < 1.

To learn more on rigid transformations: brainly.com/question/1761538

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