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4 years ago

12

which property is shown? 20×5×6=20×6×5 A commutative property B distibutivr C associative property or D none of these are correc

t

1 answer:

Contact [7]4 years ago

5 0

A: communicative property, it is this because communicative property allows you to switch around the order.

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Which expression is equivalent to? (first picture) Assume (second picture)

Novay_Z [31]

B -2x8y18
Use photo math it’s helpful

6 0

3 years ago

Each big square below represents one whole,

lukranit [14]

The first square is 100% and the second square is 55% filled in

4 0

3 years ago

!!PLEASE HELP ME ANSWER!!

Igoryamba

Answer:

$x = \sqrt{w(w+z)}$

Step-by-step explanation:

By the Pythagorean theorem, triangle BCD has

$y^2 = x^2 - w^2$

and triangle ABD has

$v^2 = y^2 + z^2$ .

Substituting the first equation into the second equation for $y^2$ gives the equation

$v^2 = (x^2 - w^2) + z^2$

Now triangle ABC has

$(w+z)^2 = x^2 + v^2$

Expanding out the left side, $w^2 + 2wz + z^2 = x^2 + v^2$ .

Now substitute the equation from before, $v^2 = x^2 - w^2 + z^2$ , into the new equation.

$w^2 + 2wz + z^2 = x^2 + (x^2 - w^2 + z^2)$

$w^2 + 2wz + z^2 =2x^2 - w^2 + z^2$

We work to isolate $x^2$ by adding $w^2$ to both sides of equation and subtracting $z^2$ from both sides.

$2w^2 + 2wz = 2x^2$

Divide both sides by 2 and you get $w^2 + wz = x^2$

Assume that x is positive and square root both sides to get the final result of

$x = \sqrt{w^2 + wz} = \sqrt{w(w+z)}$

4 0

3 years ago

(x²+10x+7)(2x-1) = 2x³+19x²+4x-7 show the steps

sasho [114]

Answer: See below

Explanation:
(x^2+10x+7)(2x-1) = 2x^3+19x^2+4x-7
2x^3-x^2+20x^2-10x+14x-7 = 2x^3+19x^2+4x-7

2x^3+19x^2+4x-7 = 2x^3+19x^2+4x-7

6 0

3 years ago

I’m so confused need help of the height Or the light house

Alina [70]

Use a proportion.

2.2/5.5 = 48/x

2.2x = 5.5 * 48

2.2x = 264

x = 120

Answer: 120 ft

4 0

3 years ago