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2 years ago

(14x2 + 13x + 12) + (7x2 + 20x + 4)

Mathematics

2 answers:

NikAS [45]2 years ago

6 0

Answer:

21x^2 + 33x + 16

Step-by-step explanation:

(14x^2 + 13x + 12) + (7x^2 + 20x + 4)

Combine like terms:

14x^2 + 7x^2 = 21x^2

13x + 20x = 33x

12 + 4 = 16

Thus:

21x^2 + 33x + 16

aalyn [17]2 years ago

4 0

Answer:

21x^2 + 33x + 16.

Step-by-step explanation:

(14x2 + 13x + 12) + (7x2 + 20x + 4) Remove the parentheses:

= 14x2 + 13x + 12 + 7x2 + 20x + 4 Bring like terms togethher:

= 14x^2 + 7x^2 + 13x + 20x + 12 + 4

= 21x^2 + 33x + 16.

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Solve the equation for x. 4^5 square root (2x-4)^2=16

VMariaS [17]

The value of x in the equation is 4

<h3>What are algebraic expressions?</h3>

Algebraic expressions are seen as expressions that consist of factors, variables, terms, coefficients, and certain constants.

These expressions are also known to be composed of some arithmetic operations, which includes;

Subtraction
Addition
Division
Multiplication
Parentheses
Bracket, etc

Given the expression;

(2x-4)^2=16

√(2x-4)^2 = 16

Find the square root of the expression, we have;

√(2x -4)^2= √16

Find the values

2x - 4 = 4

collect like terms

2x = 4 + 4

Add like terms

2x = 8

Make 'x' the subject of formula

x = 8/2

x = 4

Hence, the value is 4

Learn more about algebraic expressions here:

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6 0

2 years ago

The sum of the square of a positive number and the square of 4 more than the number is 80

Tasya [4]

I don’t know is the answer 40

6 0

3 years ago

7c3d2<br><br> Need help finding the degree of the monomial

Katyanochek1 [597]

Answer:

Step-by-step explanation:

7c³d²

This term has tow variables, c and d

Power of c is 3

Power of d is 2

Degree of this monomial is = 3+2 = 5

8 0

3 years ago

Shirley has a credit card that uses the previous balance method. The opening

vesna_86 [32]

Answer:

= $44.19

Step-by-step explanation:

APR = 19%

Billing cycle = 30 days

Balance = $2830

Let's first find the daily rate,

Daily rate = $\frac{0.19}{365} = 0.000521$

The daily rate = 0.000521

To calculate the amount Shirley was charged interest for the billing cycle, we use:

Daily rate * billing cycle * balance

Where,

Daily rate

= $\frac{0.19}{365}$

Billing cycle = 30 days

Balance = $2830

Therefore, expression to be used =

$(\frac{0.19}{365} * 30) * 2830 \\= $44.19$

8 0

3 years ago

Read 2 more answers

A small manufacturing firm has 250 employees. Fifty have been employed for less than 5 years and 125 have been with the company

sukhopar [10]

Answer:

Step-by-step explanation:

Given that a small manufacturing firm has 250 employees. Fifty have been employed for less than 5 years and 125 have been with the company for over 10 years. So remaining 75 are between 5 and 10 years.

Suppose that one employee is selected at random from a list of the employees

A) Probability that the selected employee has been with the firm less than 5 years = $\frac{50}{250 } \\= 0.20$

B) Probability that the selected employee has been with the firm between 5 and 10 years

= $\frac{75}{250 } \\= 0.30$

C) Probability that the selected employee has been with the firm more than 10 years

= $\frac{125}{250} =0.50$

a) P(A) = 0.2

P(C) = 0.5

P(A or B) = 0.2+0.3 = 0.5

P(A and C) = 0 (since A and C are disjoint)

7 0

3 years ago