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3 years ago

Why is scientific notation used?

2 answers:

6 0

The answer is the last one; to express very large or small numbers.
We use it so we can show big or very small numbers in an easier way.

Lady bird [3.3K]3 years ago

6 0

Answer: to express very large or very small numbers.c

Step-by-step explanation:

Scientific notation or scientific form is a way of expressing numbers that are too large or too small to be appropriately written in decimal form.

It is expressed as the product of a decimal form of number [commonly between 1 and 10] and powers of ten.

Hence, the scientific notation used to express very large or very small numbers.

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A local pizza shop has a membership program for frequent buyers. The membership costs $25 per month and members get a discounted

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Answer:

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2 years ago

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Write many equations that are equal to the equation 2x+4=x-4.

Jobisdone [24]

Answer:

x = -8

4x + 8 = 2x - 8

3x + 4 = 2x - 4

2x + 16 = x + 8

x - 1 = 2x + 7

17x + 36 = 16x + 28

13x + 2 = 12x + 11

.......

(this is infinite)

As long as it cancels out to x = -8

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2 years ago

Jessica has 48 coins, some of them are nickels and some are dimes. How many of each does she have if she has $3.25 total? 69 POI

Mrrafil [7]

Answer:

Nickels = 44.6

Dimes = 3.4

Step-by-step explanation:

We know that Jessica has 48 coins of which some are nickels and some are dimes so we can write it as:

n = amount of nickels

d = amount of dimes

$n+d=48$ --- (1)

We are to find the number of nickels and dimes if their total worth is $3.25.

Since a dime is worth 10¢ and a nickel is 5¢, so it should be:

$0.05n + 0.3d = 3.25$ --- (2)

From (1):

$n=48-d$

Substituting this value of $n$ in (2) to get:

$0.05(48-d) + 0.3d = 3.25$

$2.4-0.05d+0.3d=3.25$

$2.4+0.25d=3.25$

$0.25d=0.85$

$d=3.4$

Finding $n$ by substituting the value of $d$ :

$n=48-d$

$n=48-3.4$

$n=44.6$

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2 years ago

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2 ton of rocks cost $2,920.00. What is the price per pound?

horrorfan [7]

Answer: sorry dont know

Step-by-step explanation:

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3 years ago

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A car rental agency has 9 midsized and 16 compact cars on its lot, from which 6 will be selected. Assuming that each car is equ

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Answer:

$9C6 / 25C6$ = 84/177100

Step-by-step explanation:

Here 9 mid sized

16 compact cars

selected = 6

$9C6 / 25C6$ = 84/177100

for 3 mid sized

3 compact cars

then

3Cx/9Cx

divide by 3 we get

Cx/3Cxtaking Cx coomon

it become Cx =1/3 hence the probability is 1/3

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2 years ago