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3 years ago

What is equivalent to 13 - √-18? 4 13 - 9i 13 + 9i 22

Mathematics

1 answer:

beks73 [17]3 years ago

8 0

√-1=i

13-√-18=
13-√(-1)(18)=
13-(√-1)(√18)=
13-(i)(3√2)=
13-3i√2

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U(-3,6), V(-8, 1), W(-3,1) 180° rotation about the origin

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Answer:

U'(3, -6), V'(8, -1), W'(3, -1)

Step-by-step explanation:

According to the 180°-rotation rule, you take the OPPOSITE of both the y-coordinate and x-coordinate:

Extended Rotation Rules

270°-clockwise rotation [90°-counterclockwise rotation] >> (x, y) → (-y, x)

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3 years ago

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Answer:

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Step-by-step explanation:

We are given that 36% of adults questioned reported that their health was excellent.

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Among 11 adults randomly selected from this area, only 3 reported that their health was excellent.

Now we are supposed to find the probability that when 11 adults are randomly selected, 3 or fewer are in excellent health.

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Formula : $P(x=r)=^nC_r p^r q ^ {n-r}$

p is the probability of success i.e. p = 0.36

q = probability of failure = 1- 0.36 = 0.64

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So, $P(x\leq 3)=P(x=1)+{P(x=2)+P(x=3)$

$P(x\leq 3)=^{11}C_1 (0.36)^1 (0.64)^{11-1}+^{11}C_2 (0.36)^2 (0.64)^{11-2}+^{11}C_3 (0.36)^3 (0.64)^{11-3}$

$P(x\leq 3)=\frac{11!}{1!(11-1)!} (0.36)^1 (0.64)^{11-1}+\frac{11!}{2!(11-2)!} (0.36)^2 (0.64)^{11-2}+\frac{11!}{3!(11-3)!} (0.36)^3 (0.64)^{11-3}$

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3 years ago

11. Use multiplication to find an equivalent fraction for 1/3

nikitadnepr [17]

Answer: 1/3*2*2=2/6

Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

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Answer:

( $\frac{3}{5}$ b, 0 )

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3 years ago