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Mekhanik [1.2K]
3 years ago
5

Solve similar triangles (advanced) Solve for x

Mathematics
1 answer:
salantis [7]3 years ago
7 0

Answer:

4

Step-by-step explanation:

AD=4+8=12=DE thus angle EAD= angle AED=90÷2=45

angle ACB=90-45=45 thus CB=AB=4

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How do I solve quadratic equations for example,h(t) = – 0.07t2 + 0.007t + 5
g100num [7]

Answer:

  x ≈ -8.402, 8.502

Step-by-step explanation:

The usual methods of solving quadratic equations apply to this one. Any of them can be used: graphing, factoring, completing the square, quadratic formula.

<h3>Solution</h3>

Often, when the coefficients are non-integers and have no obvious relationship to each other, the most convenient method of solution is the quadratic formula. It tells you the solution to ax²+bx+c=0 is ...

  x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

Your equation has the coefficients, a = -0.07, b = 0.007, c = 5, so the solutions are ...

  x=\dfrac{-0.007\pm\sqrt{0.007^2-4(-0.07)(5)}}{2(-0.07)}=\dfrac{-0.007\pm\sqrt{1.400049}}{-0.14}\\\\x=0.05\pm\sqrt{\dfrac{200007}{2800}}=0.05\pm\sqrt{71.4310\overline{714285}}\\\\\boxed{x\approx\{-8.40169,\,8.50169\}}

5 0
2 years ago
Read 2 more answers
Determine the distance between points A (3, 5) and B (2, 1) rounded to the nearest tenth.
sasho [114]

Answer:

4

Step-by-step explanation:

gradient=vertical distance /Horizontal distance

G=V/H

G = -4/-1

G =4

3 0
2 years ago
the combined score for yakubu in geography, economics and science is 194. he scored twice as many marks in economics as in geogr
SVETLANKA909090 [29]

The scores of geography, economics and science are 38, 76, 80 respectively.

Let Yakubu scored x marks in geography.

Given that the score of him in economics is twice of the score of him in geography.

So, his score in economics = 2x

Again it is given that, the score in science is 4 more than the score in economics.

So the score in science = 2x+4

According to question the combined total score is 194. So the suitable equation is,

x+2x+2x+4 = 194

Solving the equation we get,

5x+4 = 194

5x = 194-4

5x = 190

x = 190/5

x = 38

So the score in geography = 38

the score in economics = 2x = 2*38 = 76

the score in science = 2x+4 = 2*38+4 = 76+4 = 80

Hence the scores of geography, economics and science are 38, 76, 80 respectively.

To know more about Equation refer to:

brainly.com/question/2972832

#SPJ9

4 0
2 years ago
Please help giving brainliest
pishuonlain [190]

Answer:

174

Step-by-step explanation:

give brainliest please

3 0
3 years ago
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A man cycles to a village at 18km/hr and returns at 12km/hr. If he takes 6 tahrs
Alex17521 [72]

Answer:

30km/hr

Step-by-step explanation:

18km/hr +12km/hr

6 0
3 years ago
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