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3 years ago

How many 3-digit numbers exist, whose digits are distinct even numbers.

Mathematics

2 answers:

skad [1K]3 years ago

7 0

Answer:

328

Step-by-step explanation:

If z is 0, then x has 9 choices. Therefore, z and x can be chosen in (1 × 9) + (4 × 8) = 41 ways. For each of these ways, y can be chosen in 8 ways. Hence, the desired number is 41 × 8 = 328 numbers 3-digit even numbers exist with no repetitions.

Dahasolnce [82]3 years ago

5 0

Answer:

100

Step-by-step explanation:

my teacher told me and I got it right

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An osprey flying horizontally 100 feet above a lake spots a fish below. It tilts its flight path downward by 45°. If the osprey

Ierofanga [76]

Answer: the rate at which its altitude is changing is -47 ft/s

Step-by-step explanation:

Given that;

ds/dt = 45 mph = 45 × 5280/3600 = 66 ft/sec

no we have to determine dx/dt

cos∅ = dx/dt / ds/dt

cos45° = dx/dt / 66

dx/dt = 0.7071 × 66

dx/dt = 46.6686 ≈ 47 ft/s ( as altitude is decreasing, its negative - )

so the rate at which its altitude is changing is -47 ft/s

7 0

3 years ago

17+36=z-37 what is z

sp2606 [1]

Answer:

The correct answer is 90

Step-by-step explanation:

17 + 36= z- 37 ADD 17 AND 36

53= z-37 BRING 37 OVER TO 53 AND ADD

z = 90 FINAL ANSWER

8 0

2 years ago

Two dance teams, the Roses and the Tulips, are perfectly matched so that their chances of winning are both set at 50%. What is t

shtirl [24]

Answer:

Step-by-step explanation:

Step 1

The fist step is to define the probabilities.

The events are independent from each other. Each team wins with probability $\frac{1}{2}$ and looses with probability $\frac{1}{2}.$ Let $P(W_R)$ be probability that Roses win and $P(L_R)$ be the probability that Roses loose.

Step 2

The second step is to calculate the probabilities by multiplying the probabilities with the first 3 terms in the product being the probability of a win and the last term being the probability of a loss.

The calculation is shown below,

$P(W_R)\times P(W_R)\times P(W_R)\times P(L_R)=\frac{1}{2} \times \frac{1}{2} \times\frac{1}{2} \times\frac{1}{2} =\frac{1}{16}$

Step 3

The last step is to convert this probability into a percentage. Converting this probability to a percentage is done as shown below,

$\frac{1}{16} \times 100\%=6.25\%.$

Step 4

The next step is to round down the percentage . The value of 6.25% rounded down is 6%. The correct answer is 6%.

3 0

3 years ago

Can anyone please tell me if this is correct? If not help explain me the answer? Thank you

iris [78.8K]

There is on equation to solve for x so I think it is wrong

6 0

3 years ago

I need help with this i don’t understand

Phoenix [80]

Answer:

measure of third side is = 25^2 - 20^2

= 625 - 400

= 225

= √225

= 15

hope it helps

7 0

3 years ago