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3 years ago

How many even positive integers less than 300 can be written using the number 2 4 5 and 8?

Mathematics

1 answer:

AfilCa [17]3 years ago

4 0

Answer:

Step-by-step explanation:

Let us first tackle 2-digit numbers.

They are 24, 25, 28, 42, 45, 48, 52, 54, 58, 82, 84, and 85. That makes 12 2-digit numbers.

Now for the 3-digit numbers:

245, 248, 254, 258, 284, and 285. That makes 6 3-digit numbers.

Therefore, there are 12 + 6 = 18 numbers under 300 that can be made using these numbers.

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36 x p = 5p x 7.5 solve for p

USPshnik [31]

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

36p=5p(7.5)

Step 1: Simplify both sides of the equation.

36p=37.5p

Step 2: Subtract 37.5p from both sides.

36p−37.5p=37.5p−37.5p

−1.5p=0

Step 3: Divide both sides by -1.5.

−1.5p

−1.5

p=0

8 0

3 years ago

Based on a survey, assume that 43% of consumers are comfortable having drones deliver their purchases. Suppose that we want to

lutik1710 [3]

Answer:

The probability that exactly three of them are comfortable with delivery by drones is 0.2583.

Step-by-step explanation:

Let X = number of consumers comfortable having drones deliver their purchases.

The probability of the random variable X is, P (X) = p = 0.43.

Then q is, q = 1 - p

A sample of n = 5 consumers are selected.

The random variable X follows a Binomial distribution with parameters n and p.

The pmf of X is:

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

Compute the value of P (X = 3) as follows:

$P(X=3)={5\choose 3}0.43^{3}(1-0.43)^{5-3}\\=10\times 0.079507\times 0.3249\\=0.258318\\\approx0.2583$

Thus, the probability that exactly three of them are comfortable with delivery by drones is 0.2583.

6 0

3 years ago

The circumference of circle A is twice the circumference of circle B. Which statement about the areas of the circles is true?

Troyanec [42]

The area of circle-A is four times the area of circle-B .

8 0

3 years ago

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Elena’s bedroom door is 0.8 m wide. How wide should the door be on the scale drawing, if the ratio is 1 to 50?

arlik [135]

We are given Elena’s bedroom door's width = 0.8 m.

Also the scale drawing is in the ratio of 1 to 50 that is 1/50.

In order to find the width of scale drawing, we need to multiply original width of the door by 1/50.

If we multiply 0.8 by 1/50, we get

0.8 × 1/50 = 0.8/50 = 0.016 meter.

So, we can say 0.016 meter wide should the door be on the scale drawing, if the ratio is 1 to 50.

7 0

4 years ago

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Evaluate a2b2c2 for a = 2, b = 3, and c = 4. 24 192 576

Bumek [7]

(2^2)(3^3)(4^2)=
(4)(9)(16)=
576

answer is 576

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3 years ago

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