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3 years ago

A square has a perimeter of 36 ft. What is the length of each side?

Mathematics

1 answer:

Yanka [14]3 years ago

3 0

9 ft is the answer because a square has four sides, so 36 divided by 4 is 9

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BRAINLY FOR WHO EVER ANSWERS FIRST PLS GIVE THE RIGHT ANSWER

sineoko [7]

Answer:

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Step-by-step explanation:

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3 years ago

A certain insecticide kills 60% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide i

Vilka [71]

Answer:

The probability that exactly 10 insects will die

P( X = 10 ) = 0.06385

Step-by-step explanation:

Step(i):-

Given a certain insecticide kills 60% of all insects in laboratory experiments

Given proportion p = 0.60

q = 1 - 0.60 = 0.40

Given sample size 'n' = 12

Step(ii):-

Let "X' be the random variable of binomial distribution

$P(X=r) = n_{C_{r} } p^{r} q^{n-r}$

The probability that exactly 10 insects will die

$P(X=10) = 12_{C_{10} } (0.60)^{10} (0.40)^{12-10}$

$n_{C_{r} } = \frac{n!}{(n-r)!r!} = \frac{12!}{(12-10)!10!} = 66$

$P(X=10) = 66 X (0.60)^{10} (0.40)^{2} = 0.06385$

Final answer:-

The probability that exactly 10 insects will die

P( X = 10 ) = 0.06385

4 0

3 years ago

Find the circumference of a circle with diameter of 10 cm.

Olegator [25]

Answer:

Option C, $31.4\ cm$

Step-by-step explanation:

Step 1: Determine the formula

Formula → $C = 2*\pi *r$

Step 2: Determine the radius

$Radius = \frac{Diameter}{2}$

$Radius = \frac{10\ cm}{2}$

$Radius = 5\ cm$

Step 3: Determine the circumference

$C = 2 * \pi * (5\ cm)$

$C = 10\ cm * \pi$

$C = 31.4\ cm$

Answer: Option C, $31.4\ cm$

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2 years ago

What is the slope of y = x + 5?

Mashutka [201]

Answer:

Step-by-step explanation:

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3 years ago

1/9 is half of ?(fraction)

lana [24]

Just multiply it by 2.
Answer: 1/9 is half of 2/9.

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3 years ago

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