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3 years ago

In math what does it mean by Define the varible?

2 answers:

8 0

I think it means like explain what are variable is. Only if your finding a variable: explain how you got the answer to that variable. Hope I helped!

marta [7]3 years ago

4 0

Answer:

A defining variable is a symbol, such as x, used to describe any number. When a variable is used in an function, we know that it is not just one constant number, but that it can represent many numbers. ... A variable is a letter or a symbol used to represent any number.

Step-by-step explanation:

this is the link https://www.brightstorm.com/math/algebra/pre-algebra/defining-variables/

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Solve: 5 | x + 2 | + 2 > 7 The answer has the form: ( − ∞ , A ) ∪ ( B , ∞ ) ( A , B ) State your solution using interval nota

aliina [53]

Given:

$5|x-3|+3>7$

Aim:

We need to find the value of x.

Explanation:

Subtract 3 from both sides of the equation.

$5|x-3|+3-3>7-3$

$5|x-3|>4$

Divide both sides of the equation by 5.

$\frac{5}{5}|x-3|>\frac{4}{5}$

$|x-3|>\frac{4}{5}$

Square both sides.

$(x-3)^2>(\frac{4}{5})^2$

$(x-3)^2>\frac{16}{25}$

$x^2-6x+9>\frac{16}{25}$

multiply

$x^2-6x+9>\frac{16}{25}$

7 0

2 years ago

Find JK. Please find it quick for me it is due at 12

Mrac [35]

Answer:

x+11=79

Step-by-step explanation:

3 0

3 years ago

A kitten and a puppy found a sausage which is 14cm long and started eating it simultaneously from each end. The kitten is eating

julsineya [31]

It takes them 12 seconds to eat the whole sausage.

<h3>What is speed?</h3>

Speed is the rate of change of distance.

Analysis:

If kitten eats x cm, then puppy will eat 14 - x cm

speed = d/t

speed of kitten = 1/2

speed of puppy = 2/3

1/2 = x/t

2/3 = 14 - x / t

t = 2x--------1

2t = 3(14 - x ) -------- 2

substitute t in equation 2

2(2x) = 3(14 - x)

4x = 42 - 3x

7x = 42

x = 42/7 = 6cm

substitute value of x in equation 1

t = 2(60 = 12 seconds.

In conclusion, it takes the both animals 12 seconds to finish the sausage.

Learn more about speed: brainly.com/question/4931057

#SPJ1

3 0

2 years ago

You invest $1200 and it grows at a rate of 7% for 5 years. Which expression gives the value of your investment?

finlep [7]

The expression gives the value of your investment is $A=1200(1.07)^{5}$

The value of investment after 5 years is $ 1683.06

<em><u>Solution:</u></em>

Given that You invest $1200 and it grows at a rate of 7% for 5 years

To find: Expression that gives the value of your investment

From given information,

Principal = $ 1200

rate of interest = 7 %

number of years = 5 years

The formula for compound interest, including principal sum, is:

$A=p\left(1+\frac{r}{n}\right)^{n t}$

Where,

A = the future value of the investment/loan, including interest

P = the principal investment amount (the initial deposit or loan amount)

r = the annual interest rate (decimal)

n = the number of times that interest is compounded per unit t

t = the time the money is invested or borrowed for

Assuming interest is compounded annually, n = 1

$r = 7 \% = \frac{7}{100} = 0.07$

Substituting the values we get,

$A=1200\left(1+\frac{0.07}{1}\right)^{1 \times 5}$

$\begin{aligned}&A=1200\left(1+\frac{0.07}{1}\right)^{1 \times 5}\\\\&A=1200(1.07)^{5}\\\\&A=1200 \times 1.402=1683.06\end{aligned}$

Thus the value of investment after 5 years is $ 1683.06

7 0

4 years ago

Find the value of Q in the following system so that the solution to the system

zalisa [80]

Answer:

Q = -6

Step-by-step explanation:

We assume your equations are ...

x -3y = 4
2x +Qy = 8

If you multiply the first equation by 2, it becomes ...

2x -6y = 8

In order for the solution to the system to match the first line, the second equation must be dependent on the first. That is, the second equation must match the one we just found. In order for that to be the case, we must have ...

2x -6y = 8

2x +Qy = 8 ⇒ Q = -6

3 0

3 years ago