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maria [59]
3 years ago
15

Multiply (9 - 4i)(2 + 5i)​

Mathematics
1 answer:
LenaWriter [7]3 years ago
4 0

Answer:

38+37i

Step-by-step explanation:

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As Sally and George practice for the SAT their scores on practice test rise Sally’s current score is 850 and it is rising by 10
aleksley [76]

Answer:

a) 7 weeks b) George's

Step-by-step explanation:

Sally's score can be modeled by 10x+850.

George's score can be modeled by 50x+570.

We can set them equal to each other to see when they intersect.

10x+850=50x+570

40x=280

x=7

If George overtakes her in the 7th week, of course he'll have the higher score in 12 weeks.

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Step-by-step explanation:

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If you’re good with permutations in math 30 please help and answer this easy question below real answers only
vredina [299]

Answer:

Hello,

c) 720

Step-by-step explanation:

consonants : 5

5 x 4 x 3 x 2 x 1 = 120

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Step-by-step explanation:

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3 years ago
Read 2 more answers
The quotient of two numbers is 4, and the difference is 3. What are the two numbers
Pie

Answer:

The numbers are 4 and 1

Step-by-step explanation:

Let x and y be the numbers

Quotient is division

x/y = 4

x-y =3

Taking the first equation and multiplying each side by y

x = 4y

Replacing into the second equation

4y -y = 3

3y = 3

Divide by 3

3y/3 = 3/3

y=1

Now we can find x

x -y =3

x-1 =3

Add 1 to each side

x= 4

6 0
2 years ago
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