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il63 [147K]
3 years ago
7

( 3.42 x 10^-7 ) ( 7.5 x 10^-6 ) in standard form

Mathematics
1 answer:
shutvik [7]3 years ago
3 0

Answer:

2.565 × 10^-12

Step-by-step explanation

multiply 3.42 and 7.5

you will get 25.65

multiply that by 100

then after add the powers( index law) you will get -13

minus -13 to get -12 because you multiplied by 100

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A candy distributor needs to mix a 10% fat-content chocolate with a 40% fat-content chocolate to create 100 kilograms of 22% fat
muminat
Let n be the 40%, and 100-n be the 10%. Then:
.4n+.1(100-n)=.22(100)
.3n+10=22
.3n=12
n=40
The candy distributor needs 40kg of 40%, and 60kg of 10%
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4 0
4 years ago
Pls help, this is due tomorrow
Crank

Answer:

You have a higher chance of getting an even number than a multiple of three. There are 3 even numbers and only 2 multiples of three.

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4 years ago
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Lucinda works as a tutor. She made $600 this week, working 12 hours. How much does she charge per hour for her tutoring?
Cerrena [4.2K]

Answer:

$7.14

Step-by-step explanation:

First we need to find out how many hours she worked during the whole week. WE multiply 12 by 7 and get 84. To find out how ,much she charges per hour, divide 600 by 84 and you get this amount.

5 0
4 years ago
The sum of five and twice a number is 33
Alex777 [14]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
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4x + 2y = -12 3x + y = -10 please help system by substitution.
padilas [110]

Answer:

(-4, 2)

Step-by-step explanation:

4x+2y=-12

3x+y=-10

Start by dividing the first equation by 2 to simplify it...

2x+y=-6

Then, subtract -2x from both sides to isolate y...

y=-2x-6

Substitute -2x-6 for y in the second equation...

3x-2x-6=-10

Combine like terms...

x-6=-10

Add 6 to both sides

x-6+6=-10+6

x=-4

Plug -4 in for x to solve for y:

3(-4)+y=-10

-12+y=-10

Add 12 to both sides

-12+12+y=-10+12

y=2

(x,y)=(-4,2)

3 0
3 years ago
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