What is 0.063 in scientific notation?

Answers

Answer 1

Answer: Remember that you must change this number so that it is between 1 and 10, and then multiply it by a power of 10.

So first, you have to move the decimal point over 2 places to the right.

Since you are moving to the right, the exponent on ten will be negative; since you moved 2 decimal places, you know the exponent will be -2.

The answer is 6.3 x 10^-2.

Hope this helps!

Answer 2

Answer: To put a number into scientific notation, we multiply or divide the number by 10 over and over until we have a number between 1 and 10. But we can't just change a number so we have to account for what we did by describing how many times we multiplied or divided with exponents.

Each time we multiply by 10 the decimal moves 1 place to the right. Each time we divide by 10 the decimal moves 1 place to the left. The exponent we use will describe the number of times we moved the decimal to the right or left. The exponent will be positive or negative to describe the direction we need to move the decimal to represent our original number.

I know... that sounds confusing, but it's really easy! Let's do yours...

0.063

Now we need to move the decimal to get a number between 1 and 10. So we move the decimal 2 places to the right to get 6.3

Now we have to describe how to get to the original number with the exponents. We moved the decimal 2 places right so to get our number back we would have to move it back 2 places to the left so negative exponent 2... Here's how we represent it..

6.3 x 10^-2

So what that says is if we take 6.3 and divide it by 10 twice we will get our original number.

Let's do another...

0.000000000623

We move the decimal 10 places to the right so our scientific notation is

6.23 x 10^-10

What about very large numbers...

650,000,000,000 = 6.5 x 10^11

(In that one the exponent is positive because we have to multiply to get back to the original number)

Hope this helps!

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What is the value of x?70°12x + 14

A cold front changes the temperature by -3 F each day. If the temperature started at 0 F, what will the temperature be after 5 days?

Answers

-15 F bc -3 x 5 is -15

When you complete a job, but use more time and effort than is truly necessary, how have you worked?a. Effectively, but not efficiently
b. Neither effectively nor efficiently
c. Efficiently, but not effectively
d. Both effectively and efficiently

Answers

a. effectively, but not efficiently
You completed the job, which means it was effective, however since it took so much time and effort, it could have possibly been done more efficiently.

The product of two consecutive positive integers is 27 more than 5 times the larger

Answers

X-smaller
x+1-larger

x(x+1)=5(x+1)+27
x^2+x=5x+5+27
x^2-4x=32
x^2-4x+4=32+4
(x-4)^2=36
x-4=6 X-4=-6
x=10 X=-2

Which number line shows the correct placement of -200, 75, and -150?

Answers

Answer:

in the explanation

Step-by-step explanation:

In the number line, the left most number would be -200 as it's the lowest, the middle would be -150, as this number is in between the other two, and the right most would be 75, as it's the greatest.

Hope this helps!

I NEED HELP!!!! WITH NUMBER 9, & 10??

Answers

Answer:

awnser one is 7 and question 2 is -10

Step-by-step explanation:

−12−2−−55=? question one

In the first fraction, the negative numerator and negative denominator cancel each other.

Since the the second fraction is negative and you are subtracting, remove the negative sign and switch the operation to addition.

The equivalent equation is

122+55=?

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(12/2, 5/5) = 10

Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

(122×55)+(55×22)=?

Complete the multiplication and the equation becomes

6010+1010=?

The two fractions now have like denominators so you can subtract the numerators.

Then:

60+1010=7010

Since 70 divided by 10 equals 7 then,

7010=7

Therefore:

−12−2−−55=7

Question 2

−81+6−3=?

In the second fraction, move the negative sign from the denominator to the numerator and the value remains the same.

The equivalent equation is

−81+−63=?

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(-8/1, -6/3) = 3

Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

(−81×33)+(−63×11)=?

Complete the multiplication and the equation becomes

−243+−63=?

The two fractions now have like denominators so you can add the numerators.

Then:

−24+−63=−303

Since -30 divided by 3 equals -10 then,

−303=−10

Therefore:

−81+6−3=−10

Solution by Formulas

Apply the fractions formula for addition, to

−81+6−3

and solve

(−8×−3)+(6×1)1×−3

=24+6−3

=30−3

=−10

-8b-32 what is the answer with work?

Answers

Well the LCM (lowest common multiples) for 8 and 32 would be 4. So plug 4 into "b" -8×4-32. -8×4=32. -32-32. Since you can't subtract 32 and 32 you add! Which gives you -64.

Hope this helps (:

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