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Oksana_A [137]
3 years ago
10

If u = 8 + 4i and v = 3i + 6, then what is u – v?

Mathematics
1 answer:
lozanna [386]3 years ago
7 0
u=8+4i\ and\ v=31+6\\\\u-v=(8+4i)-(3i+6)=8+4i-3i-6=(8-6)+(4i-3i)\\\\\huge\boxed{=2+i}\leftarrow \boxed{d}
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How do you solve Y=x+1 x+2y=14 in substitution?
AleksAgata [21]

Answer:

(4, 5 )

Step-by-step explanation:

Given the 2 equations

y = x + 1 → (1)

x + 2y = 14 → (2)

Substitute y = x + 1 into (2)

x + 2(x + 1) = 14 ← distribute and simplify left side

x + 2x + 2 = 14

3x + 2 = 14 ( subtract 2 from both sides )

3x = 12 ( divide both sides by 3 )

x = 4

Substitute x = 4 into (1) for corresponding value of y

y = 4 + 1 = 5

Solution is (4, 5 )

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3 years ago
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olga nikolaevna [1]
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3 years ago
Choose the possible descriptions of cross sections formed by the intersection of a plane and a cylinder choose all that apply
nasty-shy [4]

Answer:

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Step-by-step explanation:

we know that

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3 years ago
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frosja888 [35]

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350

Step-by-step explanation:

If there are 210 girls, then the number of boys is (210÷3)x7=350.

5 0
3 years ago
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