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4 years ago

If x= (10-3i) and y = (3-10i), then xy = -109i and x/y =

Mathematics

2 answers:

Anna11 [10]4 years ago

8 0

I=10/3......is your answer

aalyn [17]4 years ago

5 0

Answer:

$\frac{10-3i}{3-10i}$

Step-by-step explanation:

To know the answer to this question, you only have to put in the numerator the value of "X" which is (10-3i) and in the denominator the value of "y" which is (3-10i) and since they are separate terms and can not be divided nor added, the fraction can not be reduced and is left the same:

$\frac{10-3i}{3-10i}$

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How many 9-inch-square floor tiles are needed to cover a rectangular floor that measures 12 feet by 15 feet?

Eduardwww [97]

To cover the width we need 12÷¾=12×4/3=16 tiles.
To cover the length we need 15×4/3=20 tiles, so to cover the floor area we need 16×20=320 tiles.

6 0

3 years ago

Kevin is three years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel.

GarryVolchara [31]

Answer:

I believe that Kevin is 6 years old now.

Step-by-step explanation:

I used the guess and check method to figure this out.

First, I began by making Daniel 1 years old, two years ago. Kevin was 4 times as old as Daniel two years ago, so he would be 4 at the time. Now, Daniel would be 3 and Kevin would be 6 years old. The statement that Kevin is three years older than Daniel would confirm this, because 6-3=3. Hope this helps, this is my first time answering:)

3 0

3 years ago

Nathaly lost 29 cups of sugar by accidentally spilling it all over the floor after she cleaned it up,she asked her neighbor she

Taya2010 [7]

She needs 3 3/4 cups more

Step-by-step explanation:

(I think you accidently put the 18 3/4 part twice) but anyways if you add 3/4 and 1/2 you get 1 and 1/4 that will be important later then you do 18 + 6 = 24 and then add your 1 and 1/4 to get a total of 25 1/4 then you just minus that from 29 and get 3 and 3/4

Hope this Helps!

7 0

3 years ago

Write an equation for the description <br><br> a number x increased by 16 is 118.

noname [10]

Answer:

x +16 = 118

Step-by-step explanation:

A number(unknown ) = x

Increased = +

Merge all together you have

$x + 16 = 118$

Tip ; If you solve the equation you will get 102 as an answer. 102 +16 =118 .

SO the equation is correct .☻

6 0

3 years ago

How do you find the slope of the line that goes<br> through the points (-5, 6) and (7,-6)?

strojnjashka [21]

Answer:

Step-by-step explanation:

$slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\=\frac{-6-6}{7-[-5]}\\\\=\frac{-12}{7+5}\\\\=\frac{-12}{12}\\\\=-1$

5 0

3 years ago