How many zeros are significant figures in a measured mass of 0.010010 g?

Mathematics

1 answer:

tekilochka [14]3 years ago

4 0

Answer: 3

The first two zeros are not sig figs, but the next three zeros are sig figs

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The smallest of three consecutive integers is 24 less than the sum of the two larger integers. Find the three integers.

harkovskaia [24]

Answer:

21, 22, 23

Step-by-step explanation:

Construct equations representing each piece of information.

Three consecutive integers are three numbers in a row, for example, 1, 2 and 3.

Let's let

Integer 1 = X

Integer 2 = Y

Integer 3 = Z

X = (Y + Z) - 24

We also know that

Y = X + 1

and Z = X + 2

We can now sub this information into the first equation. We do this so that we can have only one variable in the equation.

X = (X+1) + (X+2) - 24

now solve for x,

X = 2X + 3 - 24

X = 2X - 21

-X = - 21

X = 21

So, the integers are 21, 22, 23

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3 years ago

Charles has been assigned several chores around the house he washed the supper dishes every fifth day, he takes out the trash ev

ch4aika [34]

This question is about the GREATEST COMMON FACTOR.

Supper Dishes: 5 10 15 20 25 30 35

Trash: 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35

Vacuums the House: 7 14 21 28 35 42

He will have to do all three chores on the same day every 35 day.

5 0

3 years ago

A forestry researcher wants to estimate the average height of trees in a forest near Atlanta, Georgia. She takes a random sample

marusya05 [52]

Answer:

The margin of error for her confdence interval is of 0.3757.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 18 - 1 = 17

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 17 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.99}{2} = 0.995$ . So we have T = 2.8982