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Aloiza [94]
3 years ago
11

Ay/b-by/a=a^2-b^2. find value of y

Mathematics
1 answer:
klemol [59]3 years ago
4 0
We can actually undsitribute the y

y( \frac{a}{b}- \frac{b}{a})=a^2-b^2
divide both sides by ( \frac{a}{b}- \frac{b}{a})
y= \frac{a^2-b^2}{ \frac{a}{b}-  \frac{b}{a}  }
times the right side by (ab/ab)
y= \frac{ab(a^2-b^2)}{ a^2- b^2  }
y=ab
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8i-(12-4i)+7√-9<br><br> show work please
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Answer:

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Step-by-step explanation:

8i - (12 - 4i) + 7 \sqrt{ - 9}   \\  = 8i - 12  + 4i + 7 \sqrt{9  \times ( - 1)}  \\ = 12i - 12 + 7 \times 3 \sqrt{ - 1}  \\ = 12i - 12 + 21i  \:  \: ( \because  \sqrt{ - 1} = i)\\  = 12i + 21i - 12 \\   \therefore \red{ \bold{8i - (12 - 4i) + 7 \sqrt{ - 9} }=  \purple{ \bold{33i - 12}}}

5 0
3 years ago
What is the area of an isosceles trapezoid, if the lengths of its bases are 16 cm and 30 cm and the diagonals are perpendicular
kicyunya [14]

Call the point of intersection of the diagonals point X.

Each base is the hypotenuse of an isosceles right triangle whose sides are the diagonals and whose 90° angle is at X. The altitude of that triangle (⊥ distance to the base from X) is half the length of the hypotenuse. Then the height of the trapezoid is half the sum of the base lengths.

The area of the trapezoid is the product of the height and half the sum of the base lengths, hence is the square of half the sum of the base lengths.

... Area = ((16 cm +30 cm)/2)² = (23 cm)² = 529 cm²

4 0
3 years ago
Round of 1,546 to the<br> nearest thousands
EleoNora [17]

Answer:

1,546 ≈ 2,000

Hope this helps :)

1. To round to nearest thousands, first look at the hundreds place if the number is 1,2,3,4 then round down. If the number is 5,6,7,8,9 then round up.

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1 year ago
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Lisa [10]

Answer: 26

Step-by-step explanation: The order of operations says to divided 8 and 2 first, which gives you 4. 18+4=22. Plus 4 again is 26

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A relation of the graphed below is NOT considered a function because of which pair of coordinates:
motikmotik
I think the answer is (-2,-1). 
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