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3 years ago

I really need help with this

Mathematics

1 answer:

Alex Ar [27]3 years ago

5 0

Answer:

A. x = 3, y = -3

B. a = -2, b = 5

C. try your best ill see u later

Step-by-step explanation:

Okay I'mma state some stuff first 3^a + 3^b = 3^(a+b)

and 3^a/3^b = 3^(a-b)

So first equation 3^3*3^-3=3^0

So second equation 3^3/3^-2 = 3^5

So third equation I dont really know the rule but I'mm just plug in a random number for g, like 2, then solve the thing like a normal equation.

So 3^-3 x f^-3 = 12^2 = 144, f^-3 = 144/(3^-3 or 1/27) = 144 x 27 = 3888

so f^-3 = 3888, f = well its an imaginary number according to calculator so u try your best on the last one

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3 years ago

The area of a trapezium is 147cm of the parallel sides and 5.3cm and 3.1cm long. Find the perpendicular distance between them.

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Answer:

35 cm

Step-by-step explanation:

A trapezoid is a convex quadrilateral. A trapezoid has at least on pair of parallel sides. the parallel sides are called bases while the non parallel sides are called legs

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It has 4 vertices and edges

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3 years ago

If in a right triangle, leg a = 15 and the hypotenuse, c = 22, what does the other leg, b equal?

Irina-Kira [14]

Answer:

$\sqrt{259}$ or approximately 16.09

Step-by-step explanation:

Using the pythagorean theorem, the formula would be $a^{2} + b^{2} = c^{2}$

insert 15 into a and 22 into c.

you will get $15^{2} + b^{2} = 22^{2}$

That simplifies into 225 + $b^{2}$ = 484

subtract the 225 from 484 to isolate the variable

then you will get $b^{2}$ = 259

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if you want the decimal version, fully square root the number and you will get approximately 16.09 (rounded to the nearest hundredth)

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3 years ago