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4 years ago

Algebraic expression definition

Mathematics

2 answers:

Hunter-Best [27]4 years ago

7 0

Answer:

A mathematical equation or phrase that includes numbers, variables, and operators.

Step-by-step explanation:

Examples of numbers: 1, 5, 60, 100

Examples of variables: a, x, y

Examples of operators, +, -, x, /

Any mathematical equation with all 3 of the given examples is called an algebraic expression.

For example:

1 + 21 is not an algebraic expression, because although it has both numbers and operators, it does not have a variable.

x + 2 is an algebraic expression, because it has all 3 of the components listed above.

Hope I helped :)

quester [9]4 years ago

4 0

An algebraic expression is a mathematical phrase combining numbers and/or variables.

Example:

3(x + 2) - 8(y - 5)

I hope this helps!

PLEASE MARK BRAINLIEST!

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EASY MATH!(WILL BRAINLIEST TO FIRST TO ANSWER) HELP! :3

sergejj [24]

The answer is A because at x = 1 y = -4.

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3 years ago

Read 2 more answers

PROBLEM SOLVING You are participating in an orienteering competition. The diagram shows the position of a river that cuts throug

Wewaii [24]

Answer:

The shortest distance is 2.2 miles

Step-by-step explanation:

we know that

The shortest distance you must travel to reach the river is the perpendicular distance to the river

step 1

Find the slope of the line perpendicular to the river

we have

$y=3x+2$

The slope of the river is m=3

Remember that if two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is -1)

therefore

The slope of the line perpendicular to the river is

$m=-1/3$

step 2

Find the equation of the line into point slope form

$y-y1=m(x-x1)$

we have

$m=-1/3$

$point(2,1)$

substitute

$y-1=-(1/3)(x-2)$

step 3

Find the intersection point of the river and the line perpendicular to the river

we have

$y=3x+2$ ------> equation A

$y-1=-(1/3)(x-2)$ -----> equation B

Solve the system by graphing

The intersection point is (-0.1,1,7)

see the attached figure

step 3

Find the distance between the points (2,1) and (-0,1,1.7)

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

substitute

$d=\sqrt{(1.7-1)^{2}+(-0.1-2)^{2}}$

$d=\sqrt{(0.7)^{2}+(-2.1)^{2}}$

$d=2.2\ miles$

6 0

3 years ago

Please help me with this question

Serhud [2]

Answer:

B. tht the best answer

hope this helpp

Step-by-step explanation:

6 0

3 years ago

What is the inverse of y=^x3

Rashid [163]

Answer:

Inverse of y=x^3 is f^-1(x) = ∛x

Step-by-step explanation:

We need to find the inverse of y=x^3

Step 1:

Interchange the variables:

x= y^3

Step 2: Now solve to find the value of y

=> y^3 = x

taking cube root on both sides of the equation

∛y^3 = ∛x

y=∛x

Step 3: Replace y with f^-1(x)

f^-1(x) = ∛x

So inverse of y=x^3 is f^-1(x) = ∛x

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3 years ago

The scale of a map is 0.5 inch: 50 miles. on the map, the distance between two cities is 5 inches. what is that actual distance

Kipish [7]

.5 inch / 50 miles = 5 inches / x miles
x = 500 miles

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3 years ago