What would be 12.6 - 4.9 as an estimate?

2 answers:

8 0

The exact answer is 7.7 but an estimates answer would either be to round to numbers easy to use or whole numbers, so 12.5-5=7.5 or 13-5=8

-Dominant- [34]3 years ago

6 0

I would say 8.0 Because if you do 12.6-4.9 you get 7.7 ...hope that helped

You might be interested in

Which of the following question would use the calulation 7 x 1/8

Damm [24]

Answer: The answer is D: a pizza is cut into 8 slices Beth eats 7 of them. what fraction of the pizza did Beth eat.

Step-by-step explanation:

If there are 8 slices and 7 of them have been eaten, that means 7/8 have been consumed.

5 0

2 years ago

Bruce went to sleep at 9:00 pm and set old-shchool analog alarm clock to ring when he wanted to wake up the next morning: at 10:

Anni [7]

If he goes to bed at 9:00 pm, and wakes up at 10:00 am he will have slept 13 hours.

3 0

1 year ago

A random variable x follows a normal distribution with mean d and standard deviation o=2. It is known that x is less than 5 abou

Vaselesa [24]

Answer:

The mean of this distribution is approximately 3.96.

Step-by-step explanation:

Here's how to solve this problem using a normal distribution table.

Let $z$ be the

$\displaystyle z = \frac{x - \mu}{\sigma}$ .

In this question, $x = 5$ and $\sigma = 2$ . The equation becomes

$\displaystyle z = \frac{5 - \mu}{2}$ .

To solve for $\mu$ , the mean of this distribution, the only thing that needs to be found is the value of $z$ . Since

The problem stated that $P(X \le 5) = 69.85\% = 0.6985$ . Hence, $P(Z \le z) = 0.6985$ .

The problem is that the normal distribution tables list only the value of $P(0 \le Z \le z)$ for $z \ge 0$ . To estimate $z$ from $P(Z \le z) = 0.6985$ , it would be necessary to find the appropriate

Since $P(Z \le z) = 0.6985$ and is greater than $P(Z \le 0) = 0.50$ , $z > 0$ . As a result, $P(Z \le z)$ can be written as the sum of $P(Z < 0)$ and $P(0 \le Z \le z)$ . Besides, $P(Z < 0) = P(Z \le 0) = 0.50$ . As a result: