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Pachacha [2.7K]
3 years ago
14

If 50% is 30 what is 75%​

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0

Answer:

50\% = 30 \\ 70\% = x \\  \\ 50\%x = 30 \times 70\% \\ x =  \frac{30 \times 70\%}{50\%}  \\ x = 42 \\ hence \: 70\% \: is \: 42

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Need help with this, simple but I don't understand/remember how to do it.
Lorico [155]

By using definition of proportionality and Pythagorean theorem, the values of x and y associated with the geometrical system formed by two right triangles are 36 / 5 and 104 / 5, respectively.

<h3>How to analyze a geometrical system formed by two proportional right triangles</h3>

Herein we find a picture of a geometrical system formed by two proportional right triangles with two variables: {x, y} These variables can be found by using the definition of proportionality and the Pythagorean theorem:

5 / 8 = 12 / (12 + x) = 13 / y

Then, we proceed to solve the system formed by two equations:

(12 + x) / 12 = 8 / 5

12 + x = 96 / 5

x = 96 / 5 - 12

x = 36 / 5

y / 13 = 8 / 5

y = 104 / 5

By using definition of proportionality and Pythagorean theorem, the values of x and y associated with the geometrical system formed by two right triangles are 36 / 5 and 104 / 5, respectively.

To learn more on right triangles: brainly.com/question/6322314

#SPJ1

7 0
2 years ago
(2)/(3) =( 4)/( 3+x) help give brainliest if correct and explanation please
Juli2301 [7.4K]

Answer:

(2)/(3) =( 4)/( 3+x)

Cross multiply

2*(3+x)= 4*3

Solve bracket

6+2x=12

Subtract 6 from both sides

2x=6

Divide both sides by 2

x=3

Hope it helps :-)

7 0
3 years ago
Read 2 more answers
Convert 175% to a fraction.<br> i did this 3 times and i keep getting it wrong :(
kumpel [21]

p\%=\dfrac{p}{100}\\\\175\%=\dfrac{175}{100}=\dfrac{175:25}{100:25}=\dfrac{7}{4}

3 0
3 years ago
1/16^3x=64^2(x+8)<br> Solve for x.
SSSSS [86.1K]

Answer:

x = -4

Step-by-step explanation:

16 = 4*4 = 4²

64 = 4 * 4* 4 = 4³

(\dfrac{1}{16})^{3x}=64^{2*(x+8)}\\\\\\(16^{-1})^{3x}=64^{2x + 16}\\\\\\16^{-3x}=64^{2x +16}\\\\(4^{2})^{-3x}=(4^{3})^{2x+16}\\\\4^{-6x}=4^{6x +48}

As bases are same, compare exponents

6x + 48 = -6x  

Subtract 48 from both sides

6x = -6x - 48

Add '6x' to both sides

6x + 6x = -48

12x = -48

Divide both sides by 12

x = -48/12

x = -4

3 0
2 years ago
3/4 divided by n = 24
Sophie [7]
The answer is n= 1/32

4 0
3 years ago
Read 2 more answers
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