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rusak2 [61]
3 years ago
10

Please help me out !

Mathematics
2 answers:
hjlf3 years ago
7 0

Answer:

a) \frac{-9}{-10}       b) \frac{-3}{5} , -\frac{3}{5}

Step-by-step explanation:

a) Since the fraction you are dealing with, \frac{9}{10} , is positive, we will need to find a fraction that has either two negative numbers or two positive numbers. The first option, -\frac{9}{10} , the entire fraction is negative, which does not match the given fraction. The second option, \frac{-9}{10} , only one number is negative, and that does not match either. The third option, \frac{9}{-10} , is the same as the second option, only one negative number. However the last option, \frac{-9}{-10} , has both a negative number in the numerator and denominator which both cancel out to \frac{9}{10}, making the fraction positive.

b) The fraction we are dealing with here, \frac{-3}{5} , is negative, so we need to find a fraction that has only one negative number. The first option, \frac{3}{5} , has no negative numbers, making it positive, which does not match. The second option, \frac{3}{-5} , has one negative number, which matches our fraction. The third fraction, \frac{-3}{-5} has two negative numbers making the fraction \frac{3}{5}, positive, which does not match. Then the last option, -\frac{3}{5} the whole fraction is negative which matches our fraction.

Ahat [919]3 years ago
3 0

Answer:

a) -9/-10 (4th)

b) -3/5 (4th)

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The statement If ∠A ≅ ∠C not prove that Δ ABD ≅ Δ CBD by SAS ⇒ C

Step-by-step explanation:

* Lets revise the cases of congruence  

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∵ AB = CB

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Step-by-step explanation:

The given equation of parabola is y= -x^{2} +8x-22

Simplifying the equation,

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On comparing the equations

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