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3 years ago

Scientific notation is

Mathematics

2 answers:

adoni [48]3 years ago

8 0

Answer:

way of writing big nor small numbers

Step-by-step explanation:

____ [38]3 years ago

4 0

Is the way of writing a very large or very small numbers. A number is written in scientific notation when a number between 1 and 10

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Find the solution set of this inequality|10x+20| ≤10

Pavlova-9 [17]

Answer:

solution is

[-3,-1]

Step-by-step explanation:

we are given

$|10x+20|\leq 10$

Firstly, we will find critical values

so, let's assume it is equal

$|10x+20|= 10$

now, we can break absolute sign

For $|10x+20|= -(10x+20)$ :

$-(10x+20)= 10$

we can solve for x

$-10x-20= 10$

Add both sides by 20

$-10x-20+20= 10+20$

$-10x= 30$

Divide both sides by -10

and we get

$x=-3$

For $|10x+20|= (10x+20)$ :

$(10x+20)= 10$

we can solve for x

$10x+20= 10$

Subtract both sides by 20

$10x+20-20= 10-20$

$10x= -10$

Divide both sides by 10

and we get

$x=-1$

so, critical values are

$x=-3$

$x=-1$

now, we can draw a number line and locate these values

and then we can check inequality on each intervals

For $(-\infty,-3)$ :

We can select any random value from this interval and plug that in inequality

and we get

we can plug x=-5

$|10\times -5+20|\leq 10$

$|-50+20|\leq 10$

$30\leq 10$

so, this is FALSE

For $[-3,-1]$ :

We can select any random value from this interval and plug that in inequality

and we get

we can plug x=-2

$|10\times -2+20|\leq 10$

$|-20+20|\leq 10$

$0\leq 10$

so, this is TRUE

For $(-1,\infty)$ :

We can select any random value from this interval and plug that in inequality

and we get

we can plug x=0

$|10\times 0+20|\leq 10$

$|0+20|\leq 10$

$20\leq 10$

so, this is FALSE

so, solution is

[-3,-1]

7 0

3 years ago

Pass a brotha some help :(

nikitadnepr [17]

Answer and Step-by-step explanation:

Distribute the 1p to the y and -6 and distribute the 2 to the 3y and 6.

10y - 50 + 6y + 12

Now, combine like terms.

16y - 38

#teamtrees #PAW (Plant and Water)

7 0

3 years ago

What the percent change from 50; 35

il63 [147K]

50 -> 35=change by 15
change by 5=10%
so multiply by 3
3(5)=3(10%)
15=30%

5 0

3 years ago

What is the unit rate of $48 for 3 pairs of shoes?

forsale [732]

Answer:

$16

Step-by-step explanation:

48÷3= $16 per pair of shoe

7 0

3 years ago

Read 2 more answers

How much are these coins worth?

deff fn [24]

Answer:

Step-by-step explanation:

1.65

Things how much there worth

Hope it helps

3 0

2 years ago