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3 years ago

I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS CORRECTLY

Mathematics

2 answers:

vfiekz [6]3 years ago

5 0

Answer:

A. C + 364 = 500

Step-by-step explanation:

Tems11 [23]3 years ago

3 0

Answer:

D c+364=500

Step-by-step explanation:

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A jug has 1 litre of 10% strength cordial. How much pure cordial needs to be added to make the strength 20%?

garik1379 [7]

Answer:

The volume or amount of pure cordial to be added to the solution to make the strength 20% is 125 ml

Step-by-step explanation:

The given parameters, are;

The volume of cordial in the jug = 1 litre

The percentage strength of the cordial = 10%

The proportion of the cordial that contains pure cordial = 0.1

Therefore, the volume of pure cordial in the jug = 0.1 × 1 = 0.1 × 1000 ml = 100 ml

The volume of the solvent = The volume of the solution - The initial volume of pure cordial

∴ The volume of the solvent = 1000 ml - 100 ml = 900 ml

To increase the concentration of the cordial to 20% is given by the relation;

x/(x+900) = 0.2

Where;

x = The total volume of the pure cordial to be added to the pure solvent

Solving, gives;

x = 0.2×(x+900) = 0.2·x + 180

x -0.2·x = 180

0.8·x = 180

x = 180/0.8 = 225 ml

The total volume of the pure cordial to be added to the pure solvent = x = 225 ml

Therefore, the volume of pure cordial to be added to the initial volume of pure cordial in the solution, which is 100 ml, is therefore given as follows;

The volume or amount of pure cordial to be added = 225 ml - 100 ml = 125 ml.

The volume or amount of pure cordial to be added = 125 ml

8 0

3 years ago

Each set of ordered pairs represents a function. Write a rule that represents the function (0, 0), (1, 1), (2, 4), (3, 9), (4, 1

gulaghasi [49]

The function rule is y=x^2.

You can find y by multiplying x by itself twice. For instance, 4^2=4 x 4=16.

Hope this helps✨❤️

4 0

3 years ago

It the ratio 35 to 10 proportional to the ratio 7 to 5

ipn [44]

Response:

35 : 10 = 7 : 2

Therefore 35 : 10 ≠ 7 : 5

4 0

3 years ago

SinA=√1-x÷√1+X<br> Find the value of cosA

Irina-Kira [14]

The value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

<h3>Trigonometric ratios</h3>

It is important to note that

sin A = opposite/ hypotenuse

cos A = adjacent/ hypotenuse

Then,

opposite = $\sqrt{1} - x$

Hypotenuse = $\sqrt{1} + x$

Let's find the adjacent side using the Pythagorean theroem

$(\sqrt{1} + x)^2 = (\sqrt{1 -x } )^2 + x^2$

$1 + x^2 = 1 - x^2 + x^2$

$x = \sqrt{\frac{1 + x^2}{1 -x^2} }$

cos A = x/hypotenuse

$cos A = \frac{\sqrt{\frac{1+x^2}{1 -x^2} } }{\sqrt{1} +x}$

cos A = √(1 + x²)/ (1 - x²) /√1 + x

Thus, the value of cos A is √(1 + x²)/ (1 - x²) /√1 + x

Learn more about trigonometric identities here:

brainly.com/question/7331447

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6 0

2 years ago

Factor the expression 12x2 + 14x - 6. You must show your work.<br><br> please help me

aalyn [17]

All you have to do is right these steps and the answer is 2(19x-3)

4 0

4 years ago