All categories

3 years ago

Round 0.0645 g to 2 significant figures: ___ g 0.064 0.06 0.065 0.1

Mathematics

2 answers:

Anna11 [10]3 years ago

6 0

0.065 as 0 doesn't count as a significant number

Mariulka [41]3 years ago

5 0

Answer:

0.065 g

Step-by-step explanation:

Given: 0.0645

Round the given decimal to 2 significant figures.

Round: To reduce the decimal digits which changes last digits.

If digits greater than 5 then previous digits increase by 1

If digit less than 5 then no change in last digit.

Round of 2 decimal place: Write two digits after decimal.

Significant figure: The number of digits from first digits 1 to 9 .

In the given decimal number. Number of digits after decimal is 4 and significant is 3

0.0645 Round off to 2 significant number.

0.0645 ⇒ 0.065 g

The unit of number doesn't change.

You might be interested in

Look at the image. (calculus)

mash [69]

<h3>Answer: Choice H) 2</h3>

=============================================

Explanation:

Recall that the pythagorean trig identity is $\sin^2 x + \cos^2x = 1$

If we were to isolate sine, then,

$\sin^2 x + \cos^2x = 1\\\\\sin^2 x = 1-\cos^2x\\\\\sin x = \sqrt{1-\cos^2x}\\\\$

We don't have to worry about the plus minus because sine is positive when 0 < x < pi/2.

Through similar calculations, $\cos x = \sqrt{1-\sin^2x}\\\\$

Cosine is also positive in this quadrant.

-------------

So,

$\frac{\sqrt{1-\cos^2x}}{\sin x}+\frac{\sqrt{1-\sin^2x}}{\cos x}\\\\\frac{\sin x}{\sin x}+\frac{\cos x}{\cos x}\\\\1+1\\\\2$

Therefore,

$\frac{\sqrt{1-\cos^2x}}{\sin x}+\frac{\sqrt{1-\sin^2x}}{\cos x}=2$

is an identity as long as 0 < x < pi/2

5 0

2 years ago

Read 2 more answers

Natalie started babysitting to earn money. The first week, she earned $10. Each additional week, Natalie earned $5 more than the

Evgesh-ka [11]

Answer:

x value: start with 0 and go up by 1

y value:start with 10 and each week is 5 more than previous week

Step-by-step explanation:

5 0

3 years ago

what do the following two equations represent? please help 4x+2y= 10 4x-2y= -10 a) the same line b) distance parallel lines c) p

sleet_krkn [62]

Answer:

d) intersecting, but not perpendicular lines

Step-by-step explanation:

Changing the sign of one of the variable terms causes the line to be reflected across one of the axes. The slope is the opposite of what it was. Since the original slope was not 1 or -1, the resulting line is not perpendicular to it. Lines with different slopes will be intersecting.

The two lines are intersecting, but not perpendicular.