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3 years ago

I am a whole number. When rounded to the nearest ten, the answer is 210. The sum of my digits is 4. What number am I?

Mathematics

1 answer:

Schach [20]3 years ago

4 0

i think the answer is 214 i am not sure but i think it is

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Solve for x. Enter your answer in interval notation using grouping symbols X^2 + 5x < 24

icang [17]

I think the correct answer would be : (-8,3）
I hope this helps !

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3 years ago

Question 4 options: Find the mean and standard deviation for a binomial distribution with 680 trials and a probability of succes

lys-0071 [83]

Answer:

Mean for a binomial distribution = 374

Standard deviation for a binomial distribution = 12.97

Step-by-step explanation:

We are given a binomial distribution with 680 trials and a probability of success of 0.55.

The above situation can be represented through Binomial distribution;

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

where, n = number of trials (samples) taken = 680 trials

r = number of success

p = probability of success which in our question is 0.55

So, it means X ~ $Binom(n=680, p=0.55)$

Now, we have to find the mean and standard deviation of the given binomial distribution.

Mean of Binomial Distribution is given by;

E(X) = n $\times$ p

So, E(X) = 680 $\times$ 0.55 = 374

Standard deviation of Binomial Distribution is given by;

S.D.(X) = $\sqrt{n \times p \times (1-p)}$

= $\sqrt{680 \times 0.55 \times (1-0.55)}$

= $\sqrt{680 \times 0.55 \times 0.45}$ = 12.97

Therefore, Mean and standard deviation for binomial distribution is 374 and 12.97 respectively.

3 0

3 years ago

What is 2 5/6 + 7/4 A. 2 2/5 B. 3 1/5 C. 3 4/5 D. 4 7/12

Mazyrski [523]

Answer:

Step-by-step explanation:

2 5/6=2 10/12

7/4=1 3/4= 1 9/12

2 10/12+1 9/12= 4 7/12

you can just change the denominators to the same which is 12. Hope you appreciate it!

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3 years ago

A train accelerates at an average rate of 0.33 meter per second squared, and the

ANTONII [103]

Answer:

I don't know

Step-by-step explanation:

please mark me as the brainlist

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3 years ago

Identify the property used in each step of solving the inequality 7x+4 <46.

ELEN [110]

Answer:

2.Addition Property

3.Multiplication Property

Step-by-step explanation:

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3 years ago