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3 years ago

PLEASE HELP ME I DON'T GET THIS!!

Mathematics

2 answers:

miskamm [114]3 years ago

8 0

Answer:

the first one should be 5.28x10^-2 and the second one should be 3.2x10^6

Step-by-step explanation:

because with 0.0528 you move the decimal right twice. which makes it negative.

with 3,200,000 you assume that the decimal is at the end and move it between the three and the two. making it have 6 moves. since it moves left its positive

nika2105 [10]3 years ago

6 0

Answer:

0.0528=5.28*10^-2

Step-by-step explanation:

Scientific notation is a simpler way to write very large or very small numbers. In this case, you want to write a small number in simpler form. To write in scientific notation, the number being multiplied always has to be between 1 and 10. Here, it is 5.28, so we aren't breaking the rule. You can see that we moved the decimal two places to the right, which is going to make the exponent negative (the opposite applies for larger numbers). To convert to scientific notation, move the decimal place to the right or left until you get a number between 1 and 10. Then, if you moved to the right, multiply the number that is between 1 and 10 by 10 the the negative [# of spaces that you moved the decimal] power. If you moved it left, do the same but a positive exponent. To convert <em>from</em> scientific notation, write the number that is being multipied by 10 on a sheet of paper. if the exponent is negative, you'll have to move the decimal left for every number that the exponent is. For example, if the exponent was -5, you would move the decimal to the left 5 times. If it was just 5, you would move the decimal to the right 5 times. Then, there's your number.

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The distribution of ages of runners in a marathon is approximately normal. The oldest participant was 80 and the youngest was 13

igomit [66]

Answer: The mean is greater than the median

when finding the mean then add the numbers then divide them by the amount of numbers there are when finding the median find the middle number and if there is no middle number divide the 2 and that should be your mean

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3 years ago

A page should have perimeter of 42 inches. The printing area within the page

Tamiku [17]

Overall dimensions of the page in order to maximize the printing area is page should be 11 inches wide and 10 inches long .

<u>Step-by-step explanation:</u>

We have , A page should have perimeter of 42 inches. The printing area within the page would be determined by top and bottom margins of 1 inch from each side, and the left and right margins of 1.5 inches from each side. let's assume width of the page be x inches and its length be y inches So,

Perimeter = 42 inches

⇒ $2(x+y) = 42\\x+y = 21\\y = 21-x$

width of printed area = x-3 & length of printed area = y-2:

area = $length(width)$

$area = (x-3)(y-2)\\area = (x-3)(21-x-2)\\area = (x-3)(19-x)\\area = -x^{2} + 22x -57$

Let's find $\frac{d(area)}{dx}$ :

$\frac{d(area)}{dx}$ = $\frac{d(-x^{2}+22x-57)}{dx} = -2x +22$ , for area to be maximum $\frac{d(area)}{dx}$ = 0

⇒ $-2x+22 = 0\\2x =22\\x=11 inches$

And ,

$y = 21-x\\y = 21-11\\y = 10 inches$

∴ Overall dimensions of the page in order to maximize the printing area is page should be 11 inches wide and 10 inches long .

7 0

3 years ago

40% of 125 is what number?

Hatshy [7]

The answer is 32

Solution for 40 is what percent of 125:

40:125*100 =

( 40*100):125 =

4000:125 = 32

Now we have: 40 is what percent of 125 = 32

Question: 40 is what percent of 125?

Percentage solution with steps:

Step 1: We make the assumption that 125 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$x.

Step 3: From step 1, it follows that $100\%=125$100%=125.

Step 4: In the same vein, $x\%=40$x%=40.

Step 5: This gives us a pair of simple equations:

$100\%=125(1)$100%=125(1).

$x\%=40(2)$x%=40(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

$\frac{100\%}{x\%}=\frac{125}{40}$
100%
x%=
125
40

Step 7: Taking the inverse (or reciprocal) of both sides yields

$\frac{x\%}{100\%}=\frac{40}{125}$
x%
100%=
40
125

$\Rightarrow x=32\%$⇒x=32%

Therefore, $40$40 is $32\%$32% of $125$125.

7 0

4 years ago

Read 2 more answers

I need 1 more credit to pass my class!

katrin [286]

Answer:

the answer is 3

Step-by-step explanation:

you piece of garbage im tryna help why u report me

3 0

3 years ago

Tryrone purchased a container of juice that contains 150 calories. the label says that 70% of the calories are from carbohydrate

serious [3.7K]

The answer is 45 calories

3 0

3 years ago