Mathematics High School

Hi.
I need to confirm if I am correct .

Approximate the following numbers to :
(I) 1 s.f (one significant figure)
(II) 2 s.f ( two significant figure)
(III) 3 s.f (three significant figure).

(a). 0.004816
(b). 50.00168
(c). 0.0009812​

Answers

Answer 1

Answer:

(a)

1 sig: 0.005

2 sig: 0.0048

3 sig: 0.00482

(b)

1 sig: 50

2 sig: 50.

3 sig: 50.0

(c)

1 sig: 0.0010

2 sig: 0.00098

3 sig: 0.000981

Step-by-step explanation:

Significant Figures Rules:

Any non-zero digit is significant.Any trailing zeros after the decimal is significant.Any zeros between 2 significant digits are significant.Zeroes before significant numbers in the decimal place are NOT significant; they are placeholders.

(a)

0.004816 - the zeros are placeholders, so they do not count as sig figs.

(b)

50.00168 - the zeros are between 2 significant figures, so they do count as sig figs.

(c)

0.0009812 - the zeros are placeholders, so they do not count as sig figs

Related Questions

does 55,808 have 2 as a factor ?
does 55,812 have 2 as a factor ?
does 55,814 have 2 as a factor ?
does 55,816 have 2 as a factor ?
does 55,818 have 2 as a factor ?
answer yes or no

Answers

Answer:

Yes.

Yes.

Yes.

Yes.

Yes.

Step-by-step explanation:

Yes for all of them because they are even numbers

Write a proportion for each situation. Then solve
c. 25 yards in 2 1/2 seconds 100 yards in y second

d. 480 heartbeats in 4 minutes z heartbeats in 1 minute​

Answers

Answer:

c. x = 10d. z = 120

Step-by-step explanation:

Given proportions

Equations as per ratio and solution for each

c. ..................................

25 ÷ 2 1/2 = 100 ÷ x25 ÷ 5/2 = 100 ÷ xx = 100×5/2÷25x = 10

100 yards in 10 seconds

d. ..................................

480 ÷ 4 = z ÷ 1120 = zz = 120

120 heartbeats in 1 minute

Answer:

c.   y = 10 secs.d.   z = 120 heartbeats

Step-by-step explanation:

c.  ratio and proportion:

25 yards   =    100 yards

  2.5 sec.             y sec.

cross multiply:

100 (2.5) = 25 (y)

simplify:

y = 250 / 25

y = 10 secs.

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

d.  ratio and proportion:

480 heartbeats =    z heartbeats  

     4 mins.                      1 min.

cross multiply:

4 (z) = 480 (1)

simplify:

z = 480 / 4

z = 120 heartbeats

Please Help will give Brainliest!!

Answers

Answer:

98 degrees .............

On Thursday, Maura and her grandmother planted a total of
21 flowers. The ratio of yellow flowers they planted to the total
number of flowers they planted was 2:7. How many yellow
flowers did Maura and her grandmother plant on Thursday?

Answers

D because it is d XDXD

Answer:could be 10

Step-by-step explanation:

Which one should I choose

Answers

Answer:

x<10

Step-by-step explanation:

WHOEVER CAN DO THIS CORRECTLY ILL LOVE U FOREVER!!


compare each pair of grocery items and work out which option is the better value for money.

a) 5kg of potatoes for $4.95 or 7.5kg for $7.15

b) a packet of four batteries for $3.88 or a packet of ten for $9.89

c) a 500 g tin of coffee for $9 or a 150 g had for $2.99​

Answers

Answer:

A

Step-by-step explanation:

i just know :)

PICNIC TABLE How do you know that the top of the picnic table is parallel to the ground?

Answers

Answer:

because the lines are parallel meaning they will never cross

Step-by-step explanation:

The sum of 2x and 3y is less than 16

Answers

Answer:

[tex]\huge\boxed{2x+3y<16}[/tex]

Step-by-step explanation:

The sum of 2x and 3y is less than 16

2x + 3y < 16

Answer:

2x+3y > 16

3y > 16-2x

y  > 16/3-2/3x

Step-by-step explanation:

please pass this on... ( #helpsavelives )

Who ever is reading this:

I love u.

U matter.

The world needs u

hang in there ik it may be bad but u deserve the world <3

ur beautiful no matter ur shape, size, color, gender.. anything

don't give up i need u to live.

i wish i could take everyones problems so yall wouldn't have to have em but i cant so just know ily and if anyone needs to talk u can talk to me

Pls pass this on. Everyone deserves to know this. ♥️♥️

just copy and paste its not hard pls this could save someones life

2) Eight is 5 less than
twice the number R.

Answers

Answer:

8-5 times R

Step-by-step explanation:

you subtract 8-5 to get that answer and then you do less than twice the number r i think this is correct hope it helps :)

How you would convert the repeating, nonterminating decimal to a fraction? Explain the process as you solve the problem.

0.1515

Answers

Answer:

5/33

Step-by-step explanation:

........... Explanation in pic ...........

Ryan has a shelf that is 64 over 3 inches wide. How many magazines can Ryan arrange on the shelf if each magazine is inches thick?

Answers

Answer:

21

Step-by-step explanation:

What is the percent of change from 5,000 to 8,000?

Answers

i’m trying to figure out the same thing

Step-by-step explanation:

% change = (new - original)/original × 100

= (8,000 - 5,000)/5,000 × 100

= 3,000/5000 × 100

= 60%

During February, Kevin will water has ivy every third day, and water his cactus every fifth day. On which date will Kevin first water both plants together?

Answers

Ok I’m bout to help you get this answer

Which terms are like terms in the following expression?
9x+6xy-4x+8x+6x squared

Answers

first off, (EXAMPLE) > 7x x -2x are all like terms because the variables are X.

ANSWER: 9x,-4x,8x,6x
^^ all like terms except 6xy

Answer:

9x and -4x

Step-by-step explanation:

Both 9x and -4x have the same variables? (Please correct if I am wrong..)

After a parade, a group of volunteers is helping to pick up the trash along a 2-mile stretch of a road.The group decides to divide the length of the road so that each volunteer is responsible for cleaning up equal-length sections.Find the length of a road section for each volunteer if there are 8 volunteers

Answers

Answer:

it is  .25                                                                                                                                             :)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~``

Answer:

0.08 mile or 422.4 feet

Step-by-step explanation:

Distance=2 miles

number of volunteers=25

Length for each volunteers

[tex]2\frac{2}{25} miles=0.08 mile\\[/tex]

= 422.4 feet (as mile =  5280 feet)

0.08 mile or 422.4 feet

Hudson has a balance of -$12.50 in his bank account. Daniel has a balance of $6.25 in his bank account. Use absolute value to find the difference between their balances. ​

Answers

Answer:

The absalute value is $6.25 because $12.50-$6.25=$6.25 and thats how much daniel has in his bank account.

Answer:

$18.75

Step-by-step explanation:

6.25 - negative 12.50 = 18.75

PLEASE HELP!! I'M VERY CONFUSED

Answers

See, when you have a fractional exponent, you can turn it into a square root. The 1/3 power is the same as the cubed root. As you can see in my example, I took the cubed root of 8 which is a perfect 2. I brought that to the outside.

Now this is the kind of tricky part. You have to break the exponents into 3rds. Turn the x^4 into x^3*x^1. The x^3 has a perfect cubed root of just x, now bring that out but keep the other x underneath the radical. Repeat this for the other exponents where it actually applies.

In the end, I brung all the perfect roots out and kept the rest underneath the radical. It turns out the two radicals are the same and they cancel. The 2’s also cancel. You’re stuck with:

xz^3

What is the equation of a line with a slope of -2 that passes through the point (6, 8)?
O 2x + y = 20
O y-2x = 4
O y-2x = 20
O 2x + y = 4

Answers

Answer:

2x + y = 20

Step-by-step explanation:

gradient = -2

x = 6, y = 8

y - 8 = -2(x - 6)

y - 8 = -2x + 12

2x + y = 12 + 8

2x + y = 20

Answer:

2x + y = 20

Step-by-step explanation:

hope that will help you

HURRY!! THIS ASSIGNMENT IS DUE IN 5MIN!!! THANK YOU!!!!!!


Find the discounted price.
flashlight: $18.00 discount: 25%

Answers

Answer:

You can also calculate how much you save by simply moving the period in 25.00 percent two spaces to the left, and then multiply the result by $18 as follows: $18 x . 25 = $4.50 savings.

BRAINLIST OPPORTUNITY

what is the slope of the line on the graph?

Answers

slope is represented by m, and to find it you have to pick 2 points. i picked (0,2) and (-2,1)
the answer is

m= 1/2

To find means to cover. Choose the missing prefix.
1. pre
2. dis
3. in
4. con​

Answers

2. (dis) is the prefix and cover is the middle between or after/ before a suffix/prefix.

it is B: Dis Hope this helps

Fill in each blank for the function f(x) = 3x - 6.

Answers

Answer:

IM SLOWWWWWWWWWWWWWWWWWWWWWw

Step-by-step explanation:

PLEASE ANSWER IM DESPERATE ⚠️⚠️

Answers

Y=x+2 this is the answer

Answer:

blue, y = x + 2

Step-by-step explanation:

Find the equation of this line.
(0,-2) (4,6)

Answers

Answer:

y=2x-2

you could use y=mx+b

Answer Fast Please and thank you

Answers

Answer:

128

Step-by-step explanation:

The number doubles each time

What is the sum of the first 21 even numbers? FAST!!!

Answers

Answer:

462

Step-by-step explanation:

Sum = n/2 x (a + Tn)

= 21/2 x (2 + 42)

= (21 x 44)/ 2

= 924/2

2 + 4 + 6 + 8 + 10 + 12 + . . . . + 42 = 462

A particular shade of orange paint has 2 cups of yellow paint for every 3 cups of red paint.According to the double number line, how many cups of red paint are required to make three batches

Answers

Answer:9 cups of red paint

Step-by-step explanation:1 batch = 3 cups of paint and you need to find the number of cups of paint for 3 batches so you multiply 3 x 3 and get 9. Hope this helped!!!:)

ben score 44 out of 60 marks in the math test.
what is his score as a percentage to 1 decimal place

Answers

Answer:

73.3%

Step-by-step explanation:

65.7 x 10^6 =

What is this answer

Answers

Answer:

65700000x

Step-by-step explanation:

thats the answer

Answer: 65700000

Step-by-step explanation:

65700000x

OK, this question is a little complicated. Solve v, 5/v=7.25

Answers

Answer:

Hope this helps you .....

Answer:

[tex]v=\frac{145}{8}[/tex]

Step-by-step explanation

[tex]\frac{5}{v}=\frac{2}{7.25}[/tex]

[tex]\frac{5}{v}=\frac{2}{\frac{725}{100}}[/tex]

[tex]v=\frac{2}{\frac{5^2*29}{2^2*5^2}}[/tex]

[tex]v=\frac{145}{8}[/tex]

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