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3 years ago

Who here thinks life sucks around here

Mathematics

2 answers:

olga2289 [7]3 years ago

6 0

Periot it does suck sometimes but you’re here for a reason

Lynna [10]3 years ago

4 0

Answer:

life does suck and I've been just having breakdownnnnns

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What is the value of x in the equation x+7=−213 x+7=−2

MariettaO [177]

Answer:

Step-by-step explanation:

⅓x + 7 = -2

isolate the x term by subtracting 7 from both sides

⅓x = -9

Multiply both sides by 3

x = -27

6 0

3 years ago

-2√8-√2-2√8 can u help me solve this

Charra [1.4K]

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4 years ago

Which angles are corresponding angles? Check all that apply.

artcher [175]

Corresponding angles are 3 and 7, 4 and 8, and 2 and 6.

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4 years ago

) Determine the probability that a bit string of length 10 contains exactly 4 or 5 ones.

yanalaym [24]

Answer: 0.4512

Step-by-step explanation:

A bit string is sequence of bits (it only contains 0 and 1).

We assume that the 0 and 1 area equally likely to any place.

i.e. P(0)= P(1)= $\dfrac{1}{2}$

The length of bits : n = 10

Let X = Number of getting ones.

Then , $X \sim Bin(n=10,\ p=\dfrac{1}{2})$

Binomial distribution formula : $P(X=x)=^nC_x p^x q^{n-x}$ , where p= probability of getting success in each event and q= probability of getting failure in each event.

Here , $p=q=\dfrac{1}{2}$

Then ,The probability that a bit string of length 10 contains exactly 4 or 5 ones.

$P(X= 4\ or\ 5)=P(x=4)+P(x=5)\\\\=^{10}C_4(\dfrac{1}{2})^{10}+^{10}C_4(\dfrac{1}{2})^{10}$

$=\dfrac{10!}{4!6!}(\dfrac{1}{2})^{10}+\dfrac{10!}{5!5!}(\dfrac{1}{2})^{10}$

$=(\dfrac{1}{2})^{10}(\dfrac{10!}{4!6!}+\dfrac{10!}{5!5!})$

$=(\dfrac{1}{2})^{10}(210+252)$

$=(0.0009765625)(462)$

$=0.451171875\approx0.4512$

Hence, the probability that a bit string of length 10 contains exactly 4 or 5 ones is 0.4512.

3 0

4 years ago

What are some roots to the quadratic function f(x) = x^2 - 144?

Paladinen [302]

X²=144
x=√144
x=12 or x=-12

7 0

3 years ago