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Snowcat [4.5K]
3 years ago
14

Add: (7-5i) (-10+2i)

Mathematics
1 answer:
Mice21 [21]3 years ago
5 0

Answer:

-10i^(2) + 64i - 70

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Luke invited 20 more boys than girls to his birthday party. However, only ¾ of the boys and ⅔ of the girls came. Exactly 19 of L
sveta [45]

Answer:

68

Step-by-step explanation:

Let:

Number of girls invited = x

Number of boys = x +20

3/4 of boy showed up

2/3 of girls showed up

Exactly 19 did not show up

Therefore, we could say:

Fraction of boys that didn't show up = 1 - 3/4 = 1/4

Fraction of girls that didn't show up = 1 - 2/3 = 1/3

That is,

[1/4 *(x + 20)] + [1/3*x] = 19

[(x + 20) / 4] + x /3 = 19

(3(x + 20) + 4x) / 12 = 19

3x + 60 + 4x = 228

7x = 228 - 60

7x = 168

x = 168 / 7

x = 24

Number of girls, x = 24

Number of boys, x + 20 = 24 + 20 = 44

Total friends invited = (24 + 44) = 68

8 0
3 years ago
Is there a relationship between the distance and the sum? Is there a relationship between the distance and the difference? A 5-c
kifflom [539]

Answer:.

bk  k kkuhvljhbj sjc wkjhc wjdcbouhwbcuhdwbchudbvbradleydbhudeuyuywcwcywcuvwucudcdc

Step-by-step explanation:

k

3 1
3 years ago
What is 1,025 divided by 68
Katen [24]

Answer:

15.07352941

Step-by-step explanation:

in short 15.07

7 0
3 years ago
Read 2 more answers
What is the solution set of this system of equations?
Annette [7]

Answer:

Option: d is the correct answer.

The solution set of this system of equations is:

            d.   {(2, -6)}

Step-by-step explanation:

We are given a system if equations by:

        

and  

i.e.

Also, from equation (2) we get:

Hence, the solution set is:  {(2,-6)}

4 0
3 years ago
Read 2 more answers
A scuba diver dove from the surface of the ocean to an elevation of −49 9/10 feet at a rate of −11.1 feet per minute. After spen
Norma-Jean [14]
Descent time: 4.25 min
hover time: 12.75 min
19.125 - 4.25-12.75 = 2.125 min

So, the ascent rate was (-28.9 - (-79.9))ft/2.125min = 24.0 ft/min
6 0
3 years ago
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