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4 years ago

3

Mathematics

1 answer:

Dimas [21]4 years ago

5 0

Answer:

5-i

Step-by-step explanation:

Product=multiplication

Let the complex number=x

(3+2i)*x=17+7i

x=17+7i / 3+2i

x=(17-7i)*(3-2i)/(3+2i)*(3+2i)

=51-34i+21i+14i^2 / 9+6i+6i+4i^2

=51+13i+14i^2 / 9+12i+4i^2

= (51+14 - 13i) / 13

= (65 -13i) / 13

= 65 / 13 - 13 i / 13

= 5 - i.

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The extended warranty on a garage door is $238. If the warranty costs 35% of the purchase price, how much does the garage door i

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Answer:

d. $680.

Step-by-step explanation:

Let x be the cost of garage door.

We have been given that the extended warranty on a garage door is $238 and the warranty costs 35% of the purchase price. This means 35% of x equals 238.

We can represent this information in an equation as:

$\frac{35}{100}x=238$

$0.35x=238$

$x=\frac{238}{0.35}$

$x=680$

Therefore, the cost of garage is $680 and option d is the correct choice.

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3 years ago

What is -2/9 - (-1)?

Ivan

Answer:

7/9

Step-by-step explanation:

-2/9-(-1)=-2/9+1=7/9

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3 years ago

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4 years ago

Look down below for question:

ale4655 [162]

Area of ABC : AB*AC/2

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C is the second root (x-intersect), which we can find :

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Hence the area of the triangle is $AB*AC/2=(4+C)*(2+\sqrt{4+C}-2)/2=(4+C)\sqrt{4+C}/2=32$ hence $(4+C)\sqrt{4+C}=64$ .

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4 years ago

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