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3 years ago

If z = 3cis30°, z3 in rectangular form is _ +_ i.

Mathematics

1 answer:

oee [108]3 years ago

6 0

The rectangular form is 3c/30=z
Z=10 3c//30
10z+70x + 17x-10z

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What is -3 1/3+5/6 please help me

VLD [36.1K]

Answer:

-15/6

Step-by-step explanation:

-3 1/3+5/6

5/6 - 3 1/3

=> 5/6 - 10/3

=> 5/6 - 20/6

=> -15/6

8 0

2 years ago

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Factorise completely<br> 12y² + 4y

otez555 [7]

Step-by-step explanation:

$12y^{2} + 4y \\4y( \frac{12y^{2} }{4y} + \frac{4y}{4y} ) \\ 4y(3y + 1)$

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2 years ago

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A rectangle that is 2 inches by 3 inches has been scaled by a factor of 7 if you want to cooy back to its original size by what

slamgirl [31]

Answer:

1/7

Step-by-step explanation:

Given that:

Using a scale factor of 7 ; the dimension of a rectangle is : 2 inches by 3 inches

In other to obtain the original size of the rectangle, all that is needed is to multiply the sacl d dimension by the reciprocal of the initi. Scale factor used, that is 1 / 7

This gives :

(2 inches by 3 inches) * 1/7

2/7 inches by 3/7 inches

Hence, required scale factor is 1/ 7

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3 years ago

What Is the value of 3^3 +7(2x-6) when x=4

Airida [17]

Answer:

18? i don't think it's right but i tried mental math

Step-by-step explanation:

PEMDAS

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3 years ago

In XYZ, mX=90 and mY=30.In TUV,mU= 30 and mV=60. Which is true about the two triangles? XYZ=TUV, XYZ= VUT,No congruency statemen

Flauer [41]

Answer:

No congruency statement can be made because the side length are unknown.

Step-by-step explanation:

The sum of the measures of all interior angles in a triangle is always 180°.

In triangle XYZ,

$m\angle X=90^{\circ}\\ \\m\angle Y=30^{\circ},$

then

$m\angle X+m\angle Y+m\angle Z=180^{\circ}\Rightarrow m\angle Z=180^{\circ}-90^{\circ}-30^{\circ}=60^{\circ}$

In triangle TUV,

$m\angle U=30^{\circ}\\\\m\angle V=60^{\circ},$

then

$m\angle T+m\angle U+m\angle V=180^{\circ}\Rightarrow m\angle T=180^{\circ}-30^{\circ}-60^{\circ}=90^{\circ}$

We have two triangles with congruent angles but we have no information about side lengths. Therefore, can not be made because the side length are unknown. Correct option is last option.

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3 years ago

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If z = 3cis30°, z3 in rectangular form is _____ +_____ i.

If z = 3cis30°, z3 in rectangular form is _ +_ i.