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3 years ago

Which is equal to 7(3.5x10^4)written in scientific nation

1 answer:

5 0

The answer is 2.45 x 10^5.

7 x 3.5 = 24.5

Move the decimal place over to the left until you have a number between 1 and 9 before the decimal point.

Add the number of times you moved the decimal point to the exponent (The 4 in the original equation).

2.45 x 10^5.

I hope this helps!

You might be interested in

The area of a rectangle is 36.8 square inches. The base of the rectangle is 4 inches. What is the height of the rectangle in inc

balandron [24]

Answer:

9.2 inches

Step-by-step explanation:

Given :

Area, A of rectangle = 36.8 in²

Base, b = 4 inches

height, h =?

The Area of a rectangle is given as :

A = base * height

36.8 = 4 * h

36.8 = 4h

h = 36.8 / 4

h = 9.2 inches

Height = 9.2 inches

3 0

3 years ago

Help help help help help help help help help help help plsss

pashok25 [27]

Answer:

480 miles

Step-by-step explanation:

*please stop titling your questions as: “Help help help help help help help help help help help plsss” thank you*

120/1.5 = 80

80 x 6 = 480

It can travel 480 miles in 6 hrs.

4 0

3 years ago

Read 2 more answers

What are the factors of x^2 + 3x – 4?

Delicious77 [7]

so the right answer is (x+4) and (x-1).

Look at the attached picture⤴

Hope it will help u...

6 0

3 years ago

I thought of a number, multiplied it by 2 1/2 , divided the result by 1 1/5 , subtracted 7/18 from it, and got 1 5/6 . What was

motikmotik

To figure out what the number is, just do the inverse operations in the opposite order:

Start by adding 7/18 to 1 5/6, which gives you 2 2/9.

Next, multiply 2 2/9 by 1 1/5, which gives you 2 2/3.

Finally, divide 2 2/3 by 2 1/2, which gives you 1.06666...

Therefore, the number you thought of is 1.06666...

Hope this helps! :)

8 0

3 years ago

A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviat

Mnenie [13.5K]

Answer:

B. Mean = 1.6 years, standard deviation = 0.92 years, shape: approximately Normal.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction of normal variables:

When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

35 gas ovens

A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviation of 4.2 years. This means that:

$\mu_G = 15, \sigma_G = 4.2, n = 35, s_G = \frac{4.2}{\sqrt{35}} = 0.71$