A dust particle weighs 7.42 × 10-10 kilograms. What is the weight of 5 × 106 dust particles represented in scientific notation?
A.
3.71 × 10-4 kilograms
B.
3.71 × 10-3 kilograms
C.
37.1 × 10-3 kilograms
D.
37.1 × 10-4 kilograms

Answer:

correct answer is 7 years

Step-by-step explanation:

A+56=9(A)

56+9A

A=7

he will be 7 years old he is pretty old

Answer:

Kevin is 7 years old right now.

Step-by-step explanation:

Let x be Kevin's age right now, that's what we're trying to find.

In 56 years, he'll be 9 times older than he is now, so we can say:

x + 56 = 9x

Now we can get the x values on the right side of the equation so that:

56 = 8x

Now solve for x and you have his current age which is 7.

V=d/t

V1=1/8 × 12/1=12/8=3/2

V2=3/8 × 9/1 =27/8

Common denominator:

3/2=1 1/2 and 27/8= 24 3/8

so second pool because 24 3/8 is greater

I hope my answer is correct. sorry if not

Answer:

33/.08

Step-by-step explanation:

Step-by-step explanation:

0.5% of w is 12 is what they are asking

0.5% of w = 12. Only the first answer has the equation equal to 12, so the first part is

\(12 = 0.005 \times w\)

Now to solve it, we want to get W alone, we can do that by dividing 0.005 on both sides. Since right now it's being multiplied we must do the opposite

\(w = \frac{12}{0.005} = 2400\)

Answer:

0.5% of w is 12 is what they are asking0.5% of w = 12. Only the first answer has the equation equal to 12, so the first part isNow to solve it, we want to get W alone, we can do that by dividing 0.005 on both sides. Since right now it's being multiplied we must do the opposite

Step-by-step explanation:

Answer:

it's Zac Efron for sure, Leonardo DiCaprio is just not the same...

Answer:

15.5y+9ft if im not wrong

Step-by-step explanation:

Answer:

y= -6x+2

Step-by-step explanation:

Answer: 12 degrees or 11 5/5 or 60/5

Step-by-step explanation:

Since the temperature is rising 2 2/5 per 1/5 of an hour we just need to multiply 2 2/5 times 5 because 5/5 would equal the whole hour. In order to multiply easier you can change 2 2/5 to an improper fraction by multiplying the whole number with the denominator and then adding the numerator. Which you should get 12/5 next change 5 to a fraction which would be 5/1. 5 times 12 is 60 and 5 times 1 is 5. You get 60/5 which if divided is 12.

For the number line you just have to find 1/5 and 2 2/5 on it and mark it.

Answer:

-5  ,-4, -3,-2,-1,0,1,2,3,4

Step-by-step explanation:

I acnt draw anything put that in order of the number line

Answer:

not shoreeeeeeeeeeee

Step-by-step explanation:

i do apologize

Answer:

Step-by-step explanation:

18 quarts

Answer:

angle B = 168 degrees

Step-by-step explanation:

Supplementary means that the two angles add up to equal 180, so we know that B + C = 180.

We also know that B is 14 times C, so B = 14C.

We can replace B in the original equation with 14C, so we get 14C + C = 180. Simplify this to get C = 12.

Now we can multiply this by 14 to find B, so B = 168 degrees.

Answer:

1. Ratio A is equivalent to Ratio B.

2. Ratio A is not equivalent to Ratio B.

3. Ratio A is equivalent to Ratio B.

Step-by-step explanation:

1. 8 questions out of 10 (or ) and 4 questions correct out of 5 (or ) are equivalent: Dividing the numerator of each fraction by its denominator will result in 0.8: 8/10 = 0.8, 4/5 = 0.8.

2. 15 prizes won in 40 attempts (or 15/40) and 3 prizes won in 10 attempts (3/10) are not equivalent:  15/40 = 0.375, vs  3/10 = 0.3

3. 3 cats for every 6 dogs (3/6) and 1 cat for every 2 dogs (1/2) are equivalent:  3/6 = 0.5. 1/2 = 0.5

Answer:

grid number 3

Step-by-step explanation:

There's 9 bars so I think it's 0.9

Answer: The third grid

Step-by-step explanation:

0.3 x 3 is equal to 0.9.

0.9 can also be interpreted as 9/10.

The grids all have 10 columns.

So you are looking for the grid with 9 out of 10 columns shaded.

The third grid is the only grid with 9/10 columns shaded.

So the answer is the third grid.

Step-by-step explanation:

\(diameter \: = \sqrt{ { 24}^{2} + {7}^{2} } = 25 \)

\(shaded \: area \: = circle - tringle\)

\(shaded \: area = ( \frac{\pi}{4} \times {25}^{2} ) - ( \frac{1}{2} \times 7 \times 24)\)

\(shaded \: area \: = (490.6) - (84) = 406.6 \: = 407 \: {cm}^{2} \)

Answer:

49 i think

Step-by-step explanation:

10 times 4 = 40

area of triangle = b/2

3 * 6 = 18 (base)

18/2= 9

40 plus 9 = 49

Answer:

x is 5 

Step-by-step explanation:

Answer: If im not mistaken the answer is B

Answer:

B (1⅐)

Step-by-step explanation:

Change to improper fraction and remove bracket

= -65/7 + 73/7

= -65+73 / 7

= 8/7 or 1⅐

Answer: 257/16

Step-by-step explanation:

You are given the algebraic expression: m^4+ 1/m^4

if m− 1/m = 3

Solve for m by cross multiplying

m - 1 = 3m

Collect the likes terms

3m - m = -1

2m = -1

m = -1/2

Substitutes m into the algebraic expression above.

(- 1/2)^4 + 1/(- 1/2)^4

Open the bracket

1/16 + 1/(1/16)

1/6 + 16

16(1/16) or 257/16

Answer:

$2.15

Step-by-step explanation:

Let mango be m

Let avocado be a

10m + 12a = 23

5m + 4a = 10

Let's get rid of the mangos in the second equation

       10m + 12a = 23

-2 x (5m + 4a = 10)

Now we get:

10m + 12a =23

-10m -8a = -20

Add both the equations and we get:

4a = 3

a = $0.75

since we know that one avocado is for $0.75, we can use this value to find the cost of one mango.

5m + 4a = 10

5m + 4(0.75) = 10

5m + 3 = 10

5m = 7

m = 1.4

So, we now know that a mango cost $1.4

To find the cost of one mango and one avocado:

a + m = 0.75 + 1.4 = 2.15

Therefore, the cost of one mango and one avocado is $2.15

The required cost of one mango is 1.4 and cost of one avocado is 0.75.

An equation is a combination of different variables, in which two mathematical expressions are equal to each other.

Given that,

Cost of ten mangos and twelve avocados is $23,

And cost of five mangos and four avocados is $10.

Let cost of mangoes be represented as M and cost of avocados be represented as A,

The equation can be written as,

10 M + 12 A = 23          (1)

5 M + 4 A = 10           (2)

By solving equation (1) and (2),

M = 7/5 = 1.4

N = 3/4 = 0.75

The cost of one mango is 1.4 and cost of one avocado is 0.75.

To know more about Equation on:

brainly.com/question/187506

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Answer:

To find the correct selling price, we need to first find the cost of the item plus the markup. We can do this by multiplying the cost of the item by the markup percentage: $6 * 67% = $4.02. However, since the question asks us to round to the nearest dollar, we can round this number down to $4.

Therefore, the correct selling price is $4.

The manager's likely error was that they set the selling price at the cost (option C).

Step-by-step explanation:

The correct selling price is $10 and the manager set the selling price at the markup so option (A) is correct.

The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.

The percentage is also called the indicating hundredths. Thus, 2% is two-hundredth, which means 2%=2/100=0.02.

As per the given,

Cost of item = $6

Markup = 67%

67% of $6 ⇒ 0.67 x 6 = $4.02

Add the markup in the cost = $6 + $4.02 = $10.02

Round to nearest dollars = $10.2 ≈ $10.

The manager put $4 which is a markup instant of the selling price of $10.

Hence "The correct selling price is $10 and the manager set the selling price at the markup".

For more about the percentage,

brainly.com/question/13450942

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Answer:negative

Step-by-step explanation:

Rules

Answer:

Negative

Step-by-step explanation:

A negative multiplied by a positive will have a product of a negative. A negative multiplied by a negative will have a product of a positive. And of course a positive multiplied by a positive will have a product of a positive.

Answer:

34

Step-by-step explanation:

Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth

Hope my answer helps you✌️