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3 years ago

If x is a rational number, then x + 12 could NOT be:

Mathematics

1 answer:

aalyn [17]3 years ago

5 0

Step-by-step explanation:

$x + 12 = 0$

$x = - 12$

hope it help you.

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A scarf is a triangle with two perpendicular sides that are the same length. Which two terms describe the triangular scarf

harkovskaia [24]

Two lines or line segments can either intersect (cross) each other or be parallel.

Think of the parallel lines as never meeting each other, no matter how much you would continue them to both directions

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3 years ago

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What is the distance between -24 and -16.5 on a number line?

Assoli18 [71]

Answer:

8.5

Step-by-step explanation:

When you go from negative to negative by going backwards you add positive.

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3 years ago

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The perimeter of a rectangle is 162 ft. The ratio of the length to the width is 5:4. Find the length of the rectangle.. A.18 ft.

Nikitich [7]

5:4 = 10:8 = length:width
10+8=18
162÷18= 9
9×10= 90
the length of the rectangle is D. 90 ft

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3 years ago

You are running a race. The probability that you win is 3/5. What is the probability that you lose at most 2 out of your 6 races

Veronika [31]

Answer:

The probability that you lose at most 2 out of your 6 races is 0.54432.

Step-by-step explanation:

We are given that you are running a race. The probability that you win is 3/5.

There are total of 6 races.

The above situation can be represented through binomial distribution;

$P(X = r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r} ; x = 0,1,2,3,.....$

where, n = number of trials (samples) taken = 6 races

r = number of success = at most 2 lost

p = probability of success which in our question is probability that

you lose a race = 1 - (3/5) = 2/5 or 0.4

Let X = Number of races lost

So, X ~ Binom(n = 6, p = 0.40)

Now, the probability that you lose at most 2 out of your 6 races is given by = P(X $\leq$ 2)

P(X $\leq$ 2) = P(X = 0) + P(X = 1) + P(X = 2)

= $\binom{6}{0} \times 0.40^{0} \times (1-0.40)^{6-0} + \binom{6}{1} \times 0.40^{1} \times (1-0.40)^{6-1} + \binom{6}{2} \times 0.40^{2} \times (1-0.40)^{6-2}$

= $1 \times1 \times 0.60^{6} + 6 \times 0.40^{1} \times 0.60^{5} +15\times 0.40^{2} \times 0.60^{4}$

= 0.54432

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3 years ago

How do you find the area of a parallelogram

yKpoI14uk [10]

A=B H

area equals the base times the height

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4 years ago