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3 years ago

How many significant figures ? 0.002300

Mathematics

1 answer:

agasfer [191]3 years ago

6 0

Answer:

Step-by-step explanation:

Trailing zeros in a number with a decimal point are always considered to be significant. Leading zeros are not significant.

The significant digits are in bold. There are 4 of them.

0.002300

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help? My class is doing this,It's homework, Don't understand it the 2nd one is kinda the same here's the question for both of th

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1.5 that is the correct answer I know it is because I did this the same thing and got it right.

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3 years ago

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dolphi86 [110]

Answer:

y=-15

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3 years ago

How to solve and what is the answer

TiliK225 [7]

Two ways:
1) guess factors(trial and error)
2) use quadratic formula.
If you use this method then a = -3, b = -6 and c = -1

x = -b +/- [sqrt(b^2 -4ac)/2a]
substituting a, b, and c into our equation we get:
x = - (-6)+/- [sqrt ((-6)^2) - 4(-3)(-1))/2 (-3)]
x = + 6 +/- [sqrt (36 -4 (3)/-6)] if I didnt make a mistake in my signs
x = + 6 +/- [sqrt (36 -12)/-6)]
x = 6 +/- [sqrt (24)/-6] but sqrt 6 x sqrt of 4 = sqrt 24 hence
x = 6 +/- [ sqrt 6 x sqrt 4 /-6] that is:
x = 6 +/- [sqrt 6 x 2 /-6 ]
so x = 6 + [sqrt 6 x 2/-6] and x = 6 - [sqrt 6 x 2/-6]

7 0

3 years ago

One serving of trail mix has 67 grams of carbohydrates, which is 22% of the recommended daily amount. What is the total recommen

DaniilM [7]

For this case we propose a rule of three:

67 grams -----------> 22%

x grams --------------> 100%

Where:

The variable "x" represents the recommended amount of daily carbohydrates.

So, we have:

$x = \frac {100 * 67} {22}\\x = 304.5455$

Rounding we have the recommended amount, in grams, of carbohydrates: 305 grams

Answer:

305 grams

5 0

3 years ago

Read 2 more answers

Kenneth loaned $1,200 to his niece to buy a computer. Two years later, she paid him back the $1,200 along with an interest of $9

insens350 [35]

Answer:

The annual interest rate was 4%

Step-by-step explanation:

1. Let's review the data given to us for solving the question:

Loan to Kenneth's niece to buy a computer = US$ 1,200

Duration of the loan = 2 years

Niece paid back to Kenneth = US$ 1,296

Annual interest rate = x%

2. Let's find the annual interest rate after 2 years, using the following formula:

FV = PV * (1 + x)

PV = Loan to Kenneth's niece to buy a computer = US$ 1,200

FV = Niece paid back to Kenneth = US$ 1,296

rate (r) = x

Replacing with the real values:

1,296 = 1,200 * (1 + x)

1.296/1.200 = (1 + x) (Dividing by 1,200 at both sides)

1.08 = 1 + x

1.08 - 1 = x (Subtracting 1 at both sides)

0.08 = x

This is the interest rate for two years, for finding the annual interest rate we divide it by 2, this way:

0.08 / 2 = 0.04 * 100 = 4%

7 0

3 years ago