All categories

3 years ago

How many terms are in the expression below? 5x +3 - 3x – 1 + 2x + 5

Mathematics

1 answer:

marin [14]3 years ago

5 0

Answer:

Step-by-step explanation:

5x + 3 - 3x - 1 + 2x + 5

you can combine the like terms

5x - 3x + 2x = 4x

3 - 1 + 5 = 7

4x + 7

there are 2 terms in the expression

You might be interested in

Solve for x.<br> Put your answer in decimal form.

liberstina [14]

Answer:

i don't know

Step-by-step explanation:

7 0

3 years ago

Question 15<br> Evaluate x = y for x = 3 and y = 12.

nadezda [96]

Answer:

X is four times less/smaller than Y or Y is four times greater than X

Step-by-step explanation:

Not sure what you are asking to do

6 0

3 years ago

Select the rational expression that is equivalent to the given expression below. 4 over x - 3

Ad libitum [116K]

When you say 1 over 3, you are basically saying 1 divided by 3, or expressed as a rational number: $\frac{1}{3}$ . in our rational number the denominator is 1, and the numerator is 3

Now, a rational expression is an algebraic expression in a rational for. If we apply the same to your problem. 4 over x-3 means 4 divided by x-3, or in mathematical notation: $\frac{4}{x-3}$ . In this case, the numerator is 4, and the denominator is $x-3$ .

We can conclude that the equivalent rational expression of <span>4 over x - 3 is </span> $\frac{4}{x-3}$ .

4 0

3 years ago

In which quadrant is the point (-3,5) located?

Ket [755]

Answer:

(-3,5) lies in Quadrant 2

the solution is b

3 0

3 years ago

Read 2 more answers

For each statement, write what would be assumed and what would be proven in a proof by contrapositive of the statement. Then wri

Anna007 [38]

Answer:

Given Statement - If x and y are a pair of consecutive integers, then x and y have opposite parity.

Proof by Contrapositive:

Assumed statement: Suppose that integers x and y do not have opposite parity.

Proven Statement: x and y are not a pair of consecutive integers.

Proof -

x = 2u₁ , y = 2u₂

Then

(x, x+1) = (2u₁ , 2u₁ + 1) = (Even, odd)

If y = 2u₁ + 1

Not possible

⇒x and y are not a pair of consecutive integers.

Hence proved.

Proof by Contradiction:

Assumed statement: Suppose x and y are not a pair of consecutive integers.

Proven Statement: Suppose x and y do not have opposite parity.

Proof -

If x and y are not a pair of consecutive integers.

⇒ either x and y are odd or even

If x and y are odd

⇒x and y have same parity

Contradiction

If x and y are even

⇒x and y have same parity

Contradiction

(b)

Proof by Contrapositive:

Assumed statement: Let n be an integer such that n is not odd (i.e. n is an even integer)

Proven Statement: n² is not odd (i.e n² is even)

Proof -

Let n is even

⇒n = 2m

⇒n² = (2m)² = 4m²

⇒n² is even

Hence proved.

Proof by Contradiction:

Assumed statement: Let n be an integer such that n² be odd.

Proven Statement: suppose that n is not odd (i.e n is even)

Proof -

Let n² is odd

⇒n² is even

⇒n² = 2m

⇒2 | n²

⇒2 | n

⇒n = 2x

⇒ n is even

Contradiction

8 0

3 years ago