What is true about the complex number: -5-5i? check all that apply.

Mathematics

2 answers:

Elza [17]4 years ago

7 0

Answer:

The modulus is 5√2

It lies in quadrant 4

Step-by-step explanation:

Alternate answers

Simora [160]4 years ago

6 0

Answer:

It is c and d. If this helps you are welcome

Step-by-step explanation:

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1. Find the chi square value x 2 L corresponding to a sample size of 7 and a confidence level of 99%

sashaice [31]

Answer:

1. χ² = 18.548

2. χ² = 23.685

Step-by-step explanation:

1. Confidence level is 99% (α = 0.01), but we're only interested in the left half, so α/2 = 0.005. Degrees of freedom are 7−1 = 6. Looking up in a chi square table, χ² = 18.548.

2. Confidence level is 90% (α = 0.10), but we're only interested in the right half, so α/2 = 0.05. Degrees of freedom are 15−1 = 14. Looking up in a chi square table, χ² = 23.685.

8 0

3 years ago

The probability that Brian wins a raffle is given by the expression n n + 2 . Write down an expression, in the form of a combine

LUCKY_DIMON [66]

Answer:

$\frac{2}{n+2}$

Step-by-step explanation:

Given

Let the total probability be 1

Probability that Brian wins a raffle = n/n+2

Probability that Brian does not win a raffle = 1 - Probability that Brian wins a raffle

Probability that Brian does not win a raffle = 1 - (n/n+2)

Probability that Brian does not win a raffle = $\frac{n+2-n}{n+2}$

Probability that Brian does not win a raffle = $\frac{2}{n+2}$

Hence required fraction is $\frac{2}{n+2}$

7 0

3 years ago

Hannah charges an hourly babysitting fee of $6 for two children, $7 for three children, and $8 for four or ﬁve children.

Vitek1552 [10]

The given table is
c 1 2 3 4 5
f 6 6 7 8 8

c = the number of children
f = the fee per hour

The given information is
f = $6 when c = 2;
f = $7 when c = 3;
f = $8 when c = 4 or c = 5.

A graph of the data is shown below.
Notice that the fee for 1 child was not provided, but it was provided in the table.

Let us examine the given answers.
(a) The relationship is not linear between c and f.
TRUE
(b) The relationship is linear between c and f.
FALSE
(c) The relationship is not linear for and linear for f.
FALSE
(d) The relationship is linear for c but not f.
FALSE

Answer: The relationship is not linear between c and f.