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3 years ago

Please help me with these five math questions

Mathematics

1 answer:

kykrilka [37]3 years ago

8 0

1.) false

2.) true

3.) k=.7777777

4.) 15 3/4-m=8 1/4

5.) m=7 1/2

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Is triangle RST is congruent to triangle XYZ? If so,name the postulate that applies.

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It definetly is congruent.

Have a Great Day!!!

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a triangle has sides 35cm, 54cm and 61cm long. find it's area, also find the smallest of its altitudes

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3 years ago

Factoring , <br> a² +4a - 5

givi [52]

the factors of the term $a^2+4a-5$ are $(a-1)(a+5)$

Step-by-step explanation:

We need to find factors of the term: $a^2+4a-5$

For finding factors:

We need to break the middle term such that their product is equal to product of first and last term and their sum is equal to middle term

Breaking the middle term and finding factors:

$a^2+4a-5$

$=a^2+5a-a-5$

$=a(a+5)-1(a+5)$

$=(a-1)(a+5)$

So, the factors of the term $a^2+4a-5$ are $(a-1)(a+5)$

Keywords: Finding factors

Learn more about finding factors at:

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3 years ago

The probability of flipping a coin and noting Heads is 50%. If you flip the coin 100 times, what is the standard deviation of He

BaLLatris [955]

Answer: 5.000

Step-by-step explanation:

The formula to find the standard deviation for binomial distribution is given by :-

$\sigma=\sqrt{np(1-p)}$ , where p is the probability of getting success in each trial and n is the number of trials.

Given : The probability of flipping a coin and noting Heads is = 0.50

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Then , the standard deviation of Heads to be noted will be :-

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Hence, the standard deviation of Heads to be noted = 5.000

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We know that 60 minutes = 1 hour and 1 mile = 5280 feet. We just need to multiply and simplify:

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