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3 years ago

8

The length of time for one individual to be served at a cafeteria is a random variable having an exponential distribution with a

mean of 4-minutes. what is the probability that a person is served is less than 3-minutes on at least 4 of the next 6 days?

1 answer:

Alisiya [41]3 years ago

7 0

I donu im just a kid that runs track. ahahahhahhahahha and plays roblox hahahahh

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Answer:

1.true

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Step-by-step explanation:

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3 years ago

Write as an expression and simplify

Alexus [3.1K]

Answer:

Part a) $(2m+7n)(2m-7n)$

Part b) $x^2-16xy+64y^2$

Part c) $216a^3b^6$

Part d) $(a^2-b^2)$

Step-by-step explanation:

Part a) The difference of the squares of 2m and 7n.

we know that

The difference of the squares formula is equal to

$(a^2-b^2)=(a+b)(a-b)$

substitute

$(2m)^2-(7n)^2=(2m+7n)(2m-7n)$

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The formula of the square of the difference between two numbers is equal to

$(a-b)^2=a^2-2ab+b^2$

substitute

$(x-8y)^2=x^2-2(x)(8y)+(8y)^2=x^2-16xy+64y^2$

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we have

$(6ab^{2})(6ab^{2})(6ab^{2})=(6ab^{2})^3=(6^3)(a^3)(b^{2})^3=216a^3b^6$

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The expression is equal to

$(a+b)(a-b)$

The expression represent the difference of the squares between a and b

so

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3 years ago

Given that DE is a midsegment for ABC and the length of DE is 8 units. What is the length of BC?

tresset_1 [31]

Answer:

BC = 16 units

Step-by-step explanation:

Since DE is the midsegment of the triangle, based on the midsegment theorem, thus:

DE = ½(BC)

DE = 8 units

Plug in the value

8 = ½(BC)

Multiply both sides by 2

2*8 = BC

BC = 16 units

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Answer:

Step-by-step explanation:

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3 years ago

Which statement must be true?

s344n2d4d5 [400]

<span>c. a statement cannot become a theorem until it is proven...

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3 years ago

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