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bulgar [2K]
3 years ago
14

The answers are A.9 B.25 C.18 D.15 PLEASE HELPPPP

Mathematics
1 answer:
creativ13 [48]3 years ago
3 0

Answer:

9

Step-by-step explanation:

Because I don't know but I think I'm correct.

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A tank contains 100 kg of salt and 2000 L of water. A solution of a concentration 0.025 kg of salt per liter enters a tank at th
yawa3891 [41]

Answer:

Like yeah right

Step-by-step explanation:

5 0
3 years ago
Evaluate the expression 11C3
butalik [34]
Evaluating the expression 11C3 is very simple to do. 

If you are assuming that C is the notation for the combination. 
             11!
11C3= ____
     
            3!(11-3)!
3 0
3 years ago
Solve by completing the square
Sveta_85 [38]

\qquad\qquad\huge\underline{{\sf Answer}}☂

Let's solve ~

\qquad \sf  \dashrightarrow \:  {x}^{2} + 8x = 33

\qquad \sf  \dashrightarrow \:  {x}^{2} + 8x +16 = 33 + 16

\qquad \sf  \dashrightarrow \: (x + 4) {}^{2}  = 49

\qquad \sf  \dashrightarrow \: x + 4 =  \sqrt{49}

\qquad \sf  \dashrightarrow \: x + 4 =  \pm7

Hence, there are two solutions ~

  • 1. when x + 4 = 7

\qquad \sf  \dashrightarrow \: x + 4 = 7

\qquad \sf  \dashrightarrow \: x = 7 - 4

\qquad \sf  \dashrightarrow \: x = 3

  • 2. when x + 4 = -7

\qquad \sf  \dashrightarrow \: x + 4 =  - 7

\qquad \sf  \dashrightarrow \: x  =  - 7 - 4

\qquad \sf  \dashrightarrow \: x  =   - 11

I hope you understood ~

8 0
2 years ago
Suppose that the mean retail price per gallon of regular grade gasoline in the United States is $3.47 with a standard deviation
Dimas [21]

Answer:

Step-by-step explanation:

Your answer

94.5 % - 106.5 %

Mark it as Brainlist answer. Follow me.

8 0
3 years ago
Kenya plans to make a down payment plus monthly payments in order to buy a motorcycle. At one dealer
m_a_m_a [10]

Answer:

After 20 months the total amount paid would be same for both

The amount is $5500

Step-by-step explanation:

* Lets explain how to solve the problem

- Kenya plans to make a down payment plus monthly payments in

 order to buy a motorcycle

- There are two dealer

# 1st : she would pay $2,500 down and $150 each month

# 2nd : she would pay $3,000 down and $125  each month

- We need to know after how many months the total amount paid

 would be the same for both dealers

* Lets change the two dealer to two equations

- Let f(x) represents the total amount of the motorcycle in x months

∴ f(x) = 2500 + 150 x ⇒ 1st dealer

∴ f(x) = 3000 + 125 x ⇒ 2nd dealer

- Equate the two equations

∴ 2500 + 150 x = 3000 + 125 x

- Subtract 125 x from both sides and 2500 from both sides

∴ 150 x - 125 x = 3000 - 2500

∴ 25 x = 500

- Divide both sides by 25

∴ x = 20

* After 20 months the total amount paid would be same for both

- To find the amount substitute the value of x in one of the

  two equation

∵ f(x) = 2500 + 150 x

∵ x = 20

∴ f(x) = 2500 + 150 (20)

∴ f(x) = 2500 + 3000

∴ f(x) = 5500

∵ f(x) represents the total amount of the motorcycle

* The amount is $5500

8 0
3 years ago
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