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2 years ago

What is a variable in mathematics?

Mathematics

2 answers:

Dmitrij [34]2 years ago

7 0

Answer:

variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number unknowns), t (time), r (radius), and s (arc length).

Lubov Fominskaja [6]2 years ago

7 0

Answer:

Step-by-step explanation:

In Maths, a variable is an alphabet or term that represents an unknown number or unknown value or unknown quantity. The variables are specially used in the case of algebraic expression or algebra. For example, x+9=4 is a linear equation where x is a variable, where 9 and 4 are constants.

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Solve the x <br> 1/3x + 5> 10

kotykmax [81]

Answer:

The solution to the inequality is:

$\frac{1}{3}x+5>10\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x>15\:\\ \:\mathrm{Interval\:Notation:}&\:\left(15,\:\infty \:\right)\end{bmatrix}$

The solution graph is also attached below.

Step-by-step explanation:

Given

We are given the expression

$\frac{1}{3}x+5>10$

To determine

Solve for x

Given the expression

$\frac{1}{3}x+5>10$

Subtract 5 from both sides

$\frac{1}{3}x+5-5>10-5$

Simplify

$\frac{1}{3}x>5$

Multiply both sides by 3

$3\cdot \frac{1}{3}x>5\cdot \:3$

Simplify

$x>15$

Thus, we conclude that:

$x>15$

Therefore, the solution to the inequality is:

$\frac{1}{3}x+5>10\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x>15\:\\ \:\mathrm{Interval\:Notation:}&\:\left(15,\:\infty \:\right)\end{bmatrix}$

The solution graph is also attached below.

5 0

3 years ago

Which expression is equivalent to Sine (StartFraction pi Over 12 EndFraction) cosine (StartFraction 7 pi Over 12 EndFraction) mi

Aloiza [94]

Answer:

EndRoot Over 2 EndFraction

StartFraction pi Over 6 EndFraction, StartFraction StartRoot 3 EndRoot Over 2 EndFraction

5 0

3 years ago

X/62+89=92 !!!! plz quick

elena-s [515]

To solve an algebraic equation, we need to get x by itself. We can start to do that by multiplying each side of the equation by 62 (to remove the denominator of x).

x + 89(62) = 92 * 62

Simplify

x = 92 * 62 - 89 * 62

Now we can factor out 62

x = 62 (92 - 89)

Now we can simplify the parenthesis

x = 62 * 3

x = 186

5 0

3 years ago

I need help on question b

NeTakaya

Answer:

B=25

Step-by-step explanation:

b=2(10)^2(10-5)/10(10

b=2(100)(5)/100

b=(200)(5)/100

B=2500/100

B=25

8 0

2 years ago

Read 2 more answers

Susan's grandpa was fibbing again: "your grandma and I, together, we are over 150

MrMuchimi

This doesn’t make sense, please add additional context

4 0

3 years ago