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Nesterboy [21]
3 years ago
5

Does anybody know how to solve this please with work along with each one? Thank you

Mathematics
1 answer:
Allushta [10]3 years ago
5 0
What grade are u in.
You might be interested in
Please help me out and show work
lina2011 [118]

Answer:

s(x)=\frac{0.2}{x+5}

Step-by-step explanation:

In 5 liters, there is 4% salt.

Lets find liters of salt.

First, converting 4% to decimal (dividing by 100):

4% = 4/100 = 0.04

0.04 * 5 = 0.2

So, there is 0.2 liters of salt.

Now, x liters of water is added to total, so total is now:

5 + x

The concentration of salt will be amount of salt divided by amount of salt water solution.

Amount of salt = 0.2 (as seen above)

Amount of new salt water solution = x + 5

So,

Concentration of salt in new solution is  \frac{0.2}{x+5}

2nd choice is right.

4 0
3 years ago
Help!! I cant figure this out for some reason
Thepotemich [5.8K]

Answer:

x³ - 6x² + 18x - 10

Step-by-step explanation:

(f - g)(x) = f(x) - g(x)

= x³ - 2x² + 12x - 6 - (4x² - 6x + 4)

= x³ - 2x² + 12x - 6 - 4x² + 6x - 4 ← collect like terms

= x³ - 6x² + 18x - 10

6 0
3 years ago
How do you round the area of a circle with 3.14?
kirill115 [55]

Answer:

(This is a example since you don’t have anything to round to)

Example Answer if the radius is 4 - 50.24

Step-by-step explanation:

Example Radius : 4

Area : 3.14

We have the mulitiply 3.14 times The Example Radius 2 times because The diameter of a circle is 2 times its radius.

( 3.14 x 4 x 4) 50.24

If you know the diameter, it’s a half or 1/2 as large.

Therefore, if the radius was 4, it would be 50.24.

Youre welcome :)

7 0
2 years ago
Maria sells paintings in an art gallery. She earns $375 each week plus a commission equal to 2.5% of her sales. This week her is
Dennis_Churaev [7]

Answer:

im not 100% sure but i think its 9.375

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the solution set for 6x−9=15, given the replacement set {0, 1, 2, 3, 4}?
vfiekz [6]
6x-9=15
6x=24
x=4
Therefore the answer is A.

Hope this helps :)
6 0
3 years ago
Read 2 more answers
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