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3 years ago

9

Uhm I have no idea how to answer this I’ve been trying for the past like 3 days

2 answers:

ycow [4]3 years ago

5 0

................................

Svet_ta [14]3 years ago

3 0

(Aren't two column proofs the best? I used to shred a paper when a question asked me to write proof, back in Geometry class)

So I assume the check mark mean you got that part correct. For the first statement, it should be correct, and I don't know why it isn't marked right.

Step three is basically the same exact thing as step two, so perhaps, don't add that step.

For me, the question is asking something that is so simple, that it could be solved with basic LOGIC.

However, since its asking us to write a "proof," here's my "fabulous" two column proof:

<ABC = <DEF - Given
<GHI = <DEF - Given
<ABC = GHI - Transitive property.

Overall, I have really negative feelings toward proofs because most of the time, the use of all these stupid theorems and postulates is dumb.

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Solve −8x ≤ 2.

Oksi-84 [34.3K]

-8x ≤ 2
Divide both sides by negative 8. Remember that dividing both sides by a negative number flips the direction of the inequality.
x ≥ -(1/4)
-(1/4) can also be written as -0.25
Answer is C) x ≥ -0.25

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2 years ago

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NEED HELP ASAP PLEASE!!!!

victus00 [196]

Try 11 because 36 plus 43 plus 90(right angle) is 169. The total degree of yeh triangle is 180 so 180-169 is 11

7 0

2 years ago

4=36÷ answer please help me

Alecsey [184]

Answer:

4= 36 ÷ 9

Step-by-step explanation:

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2 years ago

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Let X be a Bernoulli rv with pmf as in Example 3.18. a. Compute E(X2 ). b. Show that V(X) 5 p(1 2 p). c. Compute E(X79).

spayn [35]

The Bernoulli distribution is a distribution whose random variable can only take 0 or 1

The value of E(x2) is p
The value of V(x) is p(1 - p)
The value of E(x79) is p

<h3>How to compute E(x2)</h3>

The distribution is given as:

p(0) = 1 - p

p(1) = p

The expected value of x2, E(x2) is calculated as:

$E(x^2) = \sum x^2 * P(x)$

So, we have:

$E(x^2) = 0^2 * (1- p) + 1^2 * p$

Evaluate the exponents

$E(x^2) = 0 * (1- p) + 1 * p$

Multiply

$E(x^2) = 0 +p$

Add

$E(x^2) = p$

Hence, the value of E(x2) is p

<h3>How to compute V(x)</h3>

This is calculated as:

$V(x) = E(x^2) - (E(x))^2$

Start by calculating E(x) using:

$E(x) = \sum x * P(x)$

So, we have:

$E(x) = 0 * (1- p) + 1 * p$

$E(x) = p$

Recall that:

$V(x) = E(x^2) - (E(x))^2$

So, we have:

$V(x) = p - p^2$

Factor out p

$V(x) = p(1 - p)$

Hence, the value of V(x) is p(1 - p)

<h3>How to compute E(x79)</h3>

The expected value of x79, E(x79) is calculated as:

$E(x^{79}) = \sum x^{79} * P(x)$

So, we have:

$E(x^{79}) = 0^{79} * (1- p) + 1^{79} * p$

Evaluate the exponents

$E(x^{79}) = 0 * (1- p) + 1 * p$

Multiply

$E(x^{79}) = 0 + p$

Add

$E(x^{79}) = p$

Hence, the value of E(x79) is p

Read more about probability distribution at:

brainly.com/question/15246027

5 0

2 years ago

Find the value of the variables please please help me out I will mark you the brainly! Please please

RSB [31]

Answer:

m = 54

Step-by-step explanation:

The secant- secant angle 20° is half the difference of the intercepted arcs, that is

$\frac{1}{2}$ (160 - 2m - 12) = 20° ( multiply both sides by 2 to clear the fraction )

- 2m + 148 = 40° ( subtract 148 from both sides )

- 2m = - 108 ( divide both sides by - 2 )

m = 54

4 0

2 years ago

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