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3 years ago

What is a algebraic expression?

Mathematics

2 answers:

stiv31 [10]3 years ago

4 0

Answer:

mathematical expression that consists of variables, numbers and operations.

AlexFokin [52]3 years ago

4 0

Answer:

In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations. For example, 7r² − 2rx + u is an algebraic expression. Since taking the square root is the same as raising to the power, is also an algebraic expression.

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The combined area of a square and a rectangle is 225 square yards. the length of the rectangle is 8 times the width of the recta

snow_lady [41]

Answer:

The rectangle: L = 40 yards. W = 5 yards

The square: The length and width are both 5 yards.

Step-by-step explanation:

Let L and W be the length and width of the rectangle.

Let l and w be the length and width of the square.

Area for each is:

Rectangle: L*W

Square: l*w

We are told that L*W + l*w = 225 yards^2

We are also told that

L = 8W

and that

l = W

Since the sides of a square are all equal, w is also W: w=W

Summarizing and substituting:

L*W + l*w = 225 yards^2

(8W)*W + W*W = 225 yards^2

8W^2 + W^2 = 225 yards^2

9W^2 = 225 yards^2

W^2 = 25

W = 5 feet

---------------------

Therefore, since L = 8W , L = 40 yards. W = 5 yards for the rectangle.

The square: l=W, so l = 5 yards, and thus w=5 yards

--------------------------

Check:

Do a rectangle of 40' x 5' plus a square of 5' x 5' have a total combined area of 225 yards^2?

40yd x 5yd + 5yd x 5yd = 225 yards^2?

200 yd^2 + 25 yd^2 = 225 yards^2?

YES

5 0

2 years ago

Come up with an example of an expression, equation, and inequality.

valentina_108 [34]

Expression (non-algebraic): 3+2
An equation: 2x +1 = 21
An inequality: 2x > 2+2

4 0

3 years ago

Read 2 more answers

Find the value of x. Round to the nearest tenth.

serg [7]

Answer:

Where is the equation?

Step-by-step explanation:

8 0

3 years ago

How many 1/5s are in 1?

atroni [7]

Answer:

Step-by-step explanation:

7 0

3 years ago

A bike lock has a 3 digit combination. Each character can be any digit from 3-8. The only restriction is that all 3 characters c

lesya [120]

Answer:

The number of possible combinations is 180

Step-by-step explanation:

The numbers to select from are 3-8

These are 6 numbers

Now, the restriction we have is that the 3 characters cannot be the same

For the first character, we have 6 choices;

For the second character, we have another 6 choices

For the last character, since it cannot be the same, we can only have 5 choices

So the possible number of choices will be;

6 * 6 * 5 = 189 combinations

7 0

3 years ago