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3 years ago

Evaluate the expression −1+(4/2(6−1))2

Mathematics

1 answer:

Katarina [22]3 years ago

6 0

Answer:19

Step-by-step explanation:

−1+(

(6−1))(2)

=−1+2(6−1)(2)

=−1+(2)(5)(2)

=−1+(10)(2)

=−1+20

=19

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For a binomial probability distribution, it is unusual for the number of successes to be less than μ − 2.5σ or greater than μ +

kirill [66]

Answer:The correct option is a)

The upper limit of successes that would be deemed to be usual is 5, so more than 5 successes would be unusual.

Step-by-step explanation:

The mean of a binomial distribution

μ= np where n=10 and p= 0.2 q= 1-p, q= 1-0.2=0.8

μ= 10×0.2=2

σ=√npq

σ=√10×0.2×0.8=1.26

Is unusual for the number of success to be greater than μ + 2.5σ.

= 2+2.5(1.26)

=5 approximately.

So it is unusual for it to be greater than 0.5. The right option Is a)

7 0

3 years ago

Pls help!<br><br> 3x-4+71+80=180

juin [17]

Answer:

the answer is x=11

3 0

3 years ago

H (t) = -t2 + t + 12 <br> Solve by using quadratic formula

Sedaia [141]

The quadratic formula is:

$x=\frac{-b+\sqrt{(b)^2-4(a)(c)}}{2a}$

and

$x=\frac{-b-\sqrt{(b)^2-4(a)(c)}}{2a}$

Let's identify our a, b, and c values:

a: -1

b: 1

c: 12

Plug in the values for a, b, and c into the equation. Let's do the first equation:

$x=\frac{-1+\sqrt{(1)^2-4(-1)(12)}}{2(-1)}$

Simplify everything in the radical:

$x=\frac{-1+\sqrt{49}}{-2}$

Simplify the radical:

$x=\frac{-1+7}{-2}$

Combine like terms:

$x=\frac{6}{-2}$

Simplify:

$x=-3$

This is one solution, now, let's solve for the other equation:

Since when simplified, everything is the same except the subtraction sign, we can skip the simplification again and change the sign to subtraction:

$x=\frac{-1-7}{-2}$

Combine like terms:

$x=\frac{-8}{-2}$

Simplify:

$x=4$

Your final answers are:

$x=-3$

$x=4$

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Margaret [11]

Since there are 4 quarts in a gallon, 8 quarts equals 2 gallons

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What is the value of the exponential expression below? 36 1/2

Aleksandr [31]

36 1/2 = 6

Given: the exponential expression

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