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3 years ago

Does anyone know the answer pleaseeee

Mathematics

2 answers:

Veseljchak [2.6K]3 years ago

8 0

Answer:

A, B, C are false. D, E, F are true

Step-by-step explanation:

let's use the number 3 as a case study

A. 3²-1 = 9 - 1 = 8 (false)

B. 3(3-1) = 3 × 2 = 6 (false)

C. (3-1)² = 2² = 4 (false)

D. 3² + 2 = 9 + 2 = 11 (true)

E. 3(3-2) = 3 × 1 = 3 (true)

F. (3-2)² = 1² = 1 (true)

Sav [38]3 years ago

7 0

I’m pretty sure a, d, e and f are correct :)

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2 years ago

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3 years ago

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3 years ago

The value of x is a third of the value of 45-10x

Mnenie [13.5K]

Answer:

x = 45/13, also x = 3 6/13

Step-by-step explanation:

is = equal sign

of = multiply

Equation:

$x = 1/3 (45-10x)$

To do this, you could easily do communitive property of multiplication, but to make it more understandable I will use reversing.

1. Simplify. Multiply - Divide.

$x=\frac{45-10x}{3}$

2. Factor out common term 5.

$x=\frac{5(9-2x)}{3}$

3. Multiply both sides by 3.

$3x=5(9-2x)$

4. Expand.

$3x=45-10x$

5. Add 10x to both sides.

$3x+10x=45$

Simplify. 3x + 10x = 13x.

$13x=45$

Divide both sides by 13.

$x= \frac{45}{13}$

Mixed Number = $x=3\frac{6}{13}$ .

You can also use distributive property. The formula for this problem is: $(\frac{1}{3} * 45) - (1/3*10x)$ .

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3 years ago