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allochka39001 [22]
3 years ago
9

I'm taking a test and it's really important that I pass it because I'm already failing the class. Please help me I have no idea

how to do it. The test has a time limit, everything has to be submitted by 12:25 at the latest. Please show the work if you can.
Simplify the expressions
1. (1+2i)(5-5i)
2. (1+2i)-(-2-2i)
3. (1+2i)+(2-i)
4. (6i)(-5i)
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

1. 15+5i

2. 3+4i

3. 3+i

4. 30

Step-by-step explanation:

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0.6=x/5 what is the answer please
stealth61 [152]

Answer: 3

Step-by-step explanation:

reverse the problem

0.6=x/5

0.6 times 5 = 3

check your work

3/5=0.6

0.6=0.6

3 0
3 years ago
Read 2 more answers
Determine the slope from the following two points:<br><br> (3,6) and (5, -2)
Nonamiya [84]
Slope = (y2-y1)/(x2-x1)
slope = (-2-6)/(5-3)
slope = -8/2
slope = -4
6 0
3 years ago
Nia has a number cards for 2,3,8,9,5.what are all the different ways nia can arrange the cards to show only even numbers with th
Margarita [4]
<span>1.       </span><span>Nia has 2, 3, 8, 9 and 5 in her cards. How can she arrange it to be an even numbers with the 2 in the ten thousands place.
Now, Nia has 5 cards, that means, the biggest value she can have is ten thousands which is stated to be 2.
=> 20 000
=> We still have 3, 8, 9 and 5
=>  Let’s have 3 thousands, which is also an even number
=> let’s have 5 as hundreds, also an even number
=> We can have 9 tens, which is also an even number
=> and last is 8 ones, which is also an even number
Thus, the number will be:
=> 23 598, this is an even number because it can be divide by 2
=> 11 799
 


</span>



7 0
3 years ago
What is the decimal equivalent of the 15/8
ElenaW [278]

Answer:

A) 15.8

Step-by-step explanation:

10/8 = .80

15+ .80 = 15.8

6 0
3 years ago
what is the least number that must be added to 2000 so that the sum is divisible exactly 10,12,16and 18 ? do it step by step
Rudiy27

The integers divisible by any set of positive integers are the multiples of their LCM

let us first write the factored form of each

10 = 2×5

12 = 2×2×3

16 = 2×2×2×2

18 = 2 x3×3

Now we will find lcm of these numbers

LCM = 2×2×2×2×3×3×5 = 720

The multiples of 720 are divisible by 10,12,16 and 18.

2000/720 = 2.777777...

The least integer greater than that is 3, so 3×720 = 2160 is the least integer greater than 2000 that is divisible by 10,12,16 and 18.

so if we need to find what must be added to 2000 so that the sum is divisible by 10,12,16 and 18, we must subtract 2000 from 2160

2160-2000=160

so we must add 160 to 2000 so that the sum is divisible exactly 10,12,16and 18

5 0
4 years ago
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