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stiv31 [10]
2 years ago
14

Pleaseee help me on this question

Mathematics
2 answers:
frez [133]2 years ago
5 0

Answer:

B

Step-by-step explanation:

For every 1 liter of water, 0.07 kilograms of salt must be added. They are asking for 0.5 liters of water, which is half of 1 liter. So therefore, they need half of 0.07 kilograms of salt, which is 0.035 kilograms

SVETLANKA909090 [29]2 years ago
4 0

Answer:

0.035 kg.

Step-by-step explanation:

0.5 liter is 1/2 liter

0.07kilograms / 2 = 0.035kg

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5b ≤ −15 solve the inequality for b.
emmasim [6.3K]
Get the b all alone on one side of the inequality. To do this, we can divide both sides by 5.

5b / 5 ≤ -15 / 5
b ≤ -3

So, that means b has to be less than or equal to -3.

In interval notation it would look like [-3, -∞)

In a set builder notation: {x | x ∈ R, x ≤ -3}

Which is read as the set of all x, such that, x is a member of the real numbers and x is less than or equal to -3.
6 0
3 years ago
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Determine the type and number of solutions of 4x^2-5x+1=0
MA_775_DIABLO [31]

4x^2-5x=-1

\sqrt{4x^2-5x} = \sqrt{-1}4x^2-5x+1=0

4x+2.24x=1

6.24x=1

x= 0.16025641025641025641025641025641


7 0
3 years ago
The relationship between the selling price of an item and the cost of an item has been determined to be q=-20s+400 has been dete
MrMuchimi
We are given with the variable cost which is:
q = -20s + 400

The selling price is 's'. So, the profit can be represented by:
P = qs - q(12)

Subsituting:
P = (-20s + 400)s - 12 (-20s + 400)
P = -20s^2 + 640s - 4800

To optimize this, we must differentiate the equation and equate it to zero, so:\
dP/ds = -40s + 640 = 0
Solving for s,
s = 16

So, the selling price should be $16 to optimize the yearly profit.
7 0
3 years ago
You are planning to give you're a regale birthday surprise this coming 12 of July as she about to celebrate her 50th birthday. T
velikii [3]

All functions have an inverse expression.

  • The cost function is: \mathbf{C(x) = 40000 + 100x}.
  • The inverse function is: \mathbf{C'(x) = 0.01x - 400 }

From the question, we have the following observations:

  • Base fare = 50000 pesos for first 100
  • Additional guest = 100 pesos

So, the cost function would be:

\mathbf{C(x) = 50000 + (x - 100) \times 100}

Where: x represents the number of guests, and C(x) represents the cost function

Expand

\mathbf{C(x) = 50000 + 100x - 10000}

Evaluate like terms

\mathbf{C(x) = 40000 + 100x}

To calculate the inverse function, we have:

\mathbf{C(x) = 40000 + 100x}

Replace C(x) with y

\mathbf{y = 40000 + 100x}

Swap x and y

\mathbf{x = 40000 + 100y}

Subtract 40000 from both sides

\mathbf{x - 40000 = 100y}

Divide both sides by 100

\mathbf{\frac{x - 40000}{100} = y}

Rewrite as:

\mathbf{y= \frac{x - 40000}{100} }

Split

\mathbf{y= \frac{x}{100} - \frac{40000}{100} }

\mathbf{y= 0.01x - 400 }

Hence, the inverse function is: \mathbf{C'(x) = 0.01x - 400 }

Read more about functions and inverse at:

brainly.com/question/10300045

3 0
2 years ago
About 56% of the 2553 students are in rolled in at least one honors classes how many students are in rolled in an honors class
levacccp [35]

Answer:

1430 students

Step-by-step explanation:

5 0
3 years ago
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