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3 years ago

Help for geo. Please give explanation thanks.

Mathematics

2 answers:

likoan [24]3 years ago

8 0

The name of the shape is a trapezium, due to the fact that it has got two parallel lines and two lines that will meet.(Think of it as a triangle that has got its top cut off)

Angle ABC is 40, because BCD and ABC are alternating angles.

Angle ACB is 65.
To get this answer, you need to first of all workout angle CBD and to do that you need to substract 40+75 from 180, which would give you 65. You do this due to the fact that all the angles in any given triangle add up to 180.

Then, to work out ACB you use the alternating angles theory again, and therefore angle ACB is 65.

Slav-nsk [51]3 years ago

5 0

It’s a isosceles trapezoid or a quadrilateral. Either one should work. It has a line of symmetry bisecting one pair of opposite sides and both the legs and base angles are the same measure.

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Isaac drinks 8 glasses of water each day. He says he will drink 2,920 glasses of water in a year that has 365 days. Is the exact

Amiraneli [1.4K]

Yes because if you check with your math (or a calculator) 365 times 8 is 2,920. Therefore, Isaac's answer is reasonable. Another way you can maybe do it is round 365 days to 370 and 8 to 10 and then multiply. 370 times 10 is 3,700. Since 2,920 is close to 3,700, then the answer is reasonable.

Hope I helped!!

7 0

4 years ago

Y = f(x) = 16x Find f(x) when x = 1/2

Alina [70]

Answer:

The answer depends on what the problem really is.

f(1/2) = 8

f(1/2) = 4

See below.

Step-by-step explanation:

This is the problem as it was posted:

y = f(x) = 16x

Let x = 1/2

y = f(1/2) = 16(1/2) = 8

Perhaps the problem is this:

$y = f(x) = 16^x$

If x is an exponent of 16 and not a factor, then the answer is:

$y = f(\frac{1}{2}) = 16^\frac{1}{2} = \sqrt{16} = 4$

5 0

3 years ago

Find a formula for the inverse of the function: f(x) = 9–6/x^2, x>0.<br><br><br> f^-1(x)=

QveST [7]

9514 1404 393

Answer:

f^-1(x) = √(6/(9 -x))

Step-by-step explanation:

The inverse function is the solution to ...

x = f(y)

x = 9 -6/y^2

x +6/y^2 = 9 . . . . . add 6/y^2

6/y^2 = 9 -x . . . . . subtract x

6/(9 -x) = y^2 . . . . . multiply by y^2/(9 -x)

y = √(6/(9 -x)) . . . . take the square root

Then the inverse function can be written as ...

f^-1(x) = √(6/(9 -x)) . . . . . . x < 9

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2 years ago

Which expression is equal to 5^4⋅5^8 ? 512 54 52 5−4

KiRa [710]

Answer is 5^12 which is choice A (assuming you meant to put the ^ symbol)

The bases are the same (both are 5), so you add the exponents: 4+8 = 12. The base stays the same the entire time.

So, 5^4*5^8 = 5^(4+8) = 5^12

3 0

3 years ago

What is the selling price or the cost price depending on the information if the selling price is $21 and the game is 5%?

a_sh-v [17]

This should do the trick

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3 years ago