3 years ago

Need help on my math test!

Mathematics

1 answer:

enyata [817]3 years ago

3 0

3.14 :)))))dhebebdbdbdbfnbf

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Find the measure of each angle listed. The m∠ 2 = 153.

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Angels 4,8 and 6 are 153

The rest are 27

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Answer:

i think the answer is option c

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C) Three yam tubers are chosen at random from 15 tubers of which 5 are spoilt. Find the probability that, of the three chosen tu

Dmitry_Shevchenko [17]

$\displaystyle\\|\Omega|=\binom{15}{3}=\dfrac{15!}{3!12!}=\dfrac{13\cdot14\cdot15}{2\cdot3}=455$

$\displaystyle\\|A|=\binom{10}{3}=\dfrac{10!}{3!7!}=\dfrac{8\cdot9\cdot10}{2\cdot3}=120\\\\P(A)=\dfrac{120}{455}=\dfrac{24}{91}\approx26.4\%$

$\displaystyle\\|A|=\binom{5}{3}=\dfrac{5!}{3!2!}=\dfrac{4\cdot5}{2}=10\\\\P(A)=\dfrac{10}{455}=\dfrac{2}{91}\approx2.2\%$

$\displaystyle\\|A|=\binom{10}{2}\cdot5=\dfrac{10!}{2!8!}\cdot5=\dfrac{9\cdot10}{2}\cdot5=225\\\\P(A)=\dfrac{225}{455}=\dfrac{45}{91}\approx49.5\%$

$A$ - at least one is spoilt

$A'$ - none is spoilt

$P(A)=1-P(A')$

We calculated $P(A')$ in a).

Therefore

$P(A)=1-\dfrac{24}{91}=\dfrac{67}{91}\approx73.6\%$

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Answer:

Step-by-step explanation:

Use Desmos graphing calculator

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Solve 5x^2+8x+3=0 for x

Black_prince [1.1K]

5x^2+8x+3=0

factor

(5x+3) (x+1)=0

using the zero product property

5x+3 =0 x+1 =0

5x=-3 x=-1

x=-3/5 x=-1

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4 years ago