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ElenaW [278]
3 years ago
5

Factor 25-4z^2 im having trouble with a question

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

Answer:

(5-2z)(5+2z)

Step-by-step explanation:

25 -4z^2

Rewriting

5^2 - (2z)^2

This is the difference of squares  a^2 - b^2 = (a-b)(a+b)

(5-2z)(5+2z)

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Answer:

0.0537

Step-by-step explanation:

This follows a binomial distribution with : n

Number of trials 'N' = 12 ; Probability of success (difference between speakers) 'p' = 1/2 or 0.5 ; Probability of failure (no difference b/w speakers) = 1/2 or 0.5 ; No of success 'r' = 3

P (X = 3) = N C r. (p)^r.(q)^(n-r)\\

= 12C3 (0.5)^3 (0.5)^9

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Round 4.9 to the nearest whole number<br>​
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Step-by-step explanation:

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3 years ago
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The diagram below shows the construction of the bisector of ∠abc. which statement is not true?
Ksenya-84 [330]

Answer:

c)\overline{AC}=2\overline{AB}

Step-by-step explanation:

<u>Retrieved Information:</u>

Which statement is not true?

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b) Check the graph below

1) To bisect is to equally divide an angle or a line segment, into two equal parts. The bisector of AC divides the line segment AC in its midpoint, so AC≅CB, therefore AC=CB. In addition to this, this is equivalent to say that CB is = 1/2AB.

Finally, this is also true that AC+CB=AB.

2) Clearly AC is not equal to 2AB since AC=CB is = 1/2AB then it is false.

c)\overline{AC}=2\overline{AB}\:FALSE

6 0
3 years ago
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Step-by-step explanation:

i hope this helps

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3 years ago
Please help I’ll give branliest and 100 points
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