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3 years ago

Evaluate the expression (ab)^2for a = 4 and b = 3.

Mathematics

2 answers:

sertanlavr [38]3 years ago

6 0

Answer:

144

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

(ab)²

<em>a </em>= 4

<em>b</em> = 3

<u>Step 2: Evaluate</u>

Substitute in variables: [4(3)]²
[Brackets] Multiply: 12²
Exponents: 144

nasty-shy [4]3 years ago

3 0

Answer:

144

Step-by-step explanation:

Plug in a and b

In this case a=4, b=3

(ab)^2

( (4)(3) )^2

(12)^2

12x12

144

If this helps please mark as brainliest

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ludmilkaskok [199]

Answer:

Step-by-step explanation:

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$x + y = 8$

Solve the equation for y by moving 'x' to R.H.S and changing its sign

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Substitute the given value of y into the equation 5x + y = 28

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$4x = 28 - 2$

Subtract the numbers

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Calculate

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The possible solution of the system is the ordered pair ( x , y )

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

Let's check if the given ordered pair is the solution of the system of equation:

plug the value of x and y in both equation

$5 \times \frac{13}{2} - \frac{9}{2} = 28$

$\frac{13}{2} - \frac{9}{2} = 2$

Simplify the equalities

$28 = 28$

$2 = 2$

Since , all of the equalities are true, the ordered pair is the solution of the system.

$(x \:, y \: ) = ( \frac{13}{2} \: , - \frac{9}{2})$

Hope this helps....

Best regards!!

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