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3 years ago

18 is 20% of what number?

2 answers:

7 0

Hi there!

18 is 20% of 90. Why, you may ask?

To solve we just divide both sides by 0.2

We would start off with 0.2x = 18.
NOW divide.
x = 90.

We can check this by seeing that 20% of 90 is equal to 18.

Hope this helps!

maks197457 [2]3 years ago

4 0

Its 3.6 because you take 20%=20%/100% =0.2

20%=0.2

multiply 0.2 by 18 0.2*18= 3.6 i hope this help you :)

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What is thicker 1.75 or 1.950

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4 years ago

-4

S_A_V [24]

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2 years ago

Geometry! Please help. See image. BRAINLIEST!

Nadya [2.5K]

Answer:

B. $r_{x-axis}(x,y) \circ R_0,90\degree)$

Step-by-step explanation:

The vertices of triangle ABC have coordinates A(5,2) B(2,4) and C(2,1).

The mapping for reflection in the x-axis is

$(x,y)\to (x,-y)$

When we reflect triangle ABC in the x-axis, we obtain

A1(5,-2) B1(2,-4) and C1(2,-1).

The mapping for 90 degrees clockwise rotation about the origin is

$(x,y)\to (y,-x)$

When we rotate the resulting triangle through 90 degrees clockwise above the origin, we obtain;

A2(-2,-5) B2(-4,-2) and C2(-1,-2).

The vertices of triangle A''B''C'' also have coordinates A''(-2,-5) B''(-4,-2) and C''(-1,-2).

Hence the rule that describes the composition of transformation that maps ABC to A''B''C'' is

$R_0,90\degree \circ r_{x-axis}(x,y)$

The correct choice is B.

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4 years ago