3 years ago

If z=15, what would the expression z2 – 2z + 15 be equal to?

Mathematics

1 answer:

sveticcg [70]3 years ago

8 0

None of those are correct.

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How many cylindrical can of bottles 12 cm high and with 6 cm diameter could be filled from a tank containing 125 liters of deter

Orlov [11]

Answer:

368 cans.

Step-by-step explanation:

Volume of 1 can = π r^2 h.

Here h (height) = 12 and r (radius) = 1/2 * 6 = 3 cm.

So V = π * 3^2 * 12

= 108π cm^3.

The tank hold 125 liters

= 125,000 cm^3, so:

Number of cans that could be filled = 125000/ 108 π

= 368.4.

4 0

3 years ago

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Imamu pays $30 each month for his gym membership. What is the change in the amount of money in his account after 2/3 of a year

Alchen [17]

The answer is $240 because 2/3 in a years have 8 month so just multiply 3*8 which give you 24 and just add a zero.

Your answer is: $240.

Thank you

Have a great day :).

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3 years ago

I need help figuring out this question

statuscvo [17]

Answer:

nre, nre

Step-by-step explanation:

Given

$4b^2 + 16 = 0$

Required

Solve

$4b^2 + 16 = 0$

Subtract 16 from both sides

$4b^2 +16 -16 = 0 - 16$

$4b^2 = - 16$

Divide both sides by 4

$b^2 = -4$

Take square roots of both sides

$b = \sqrt{-4$

$\sqrt{-4} \to$ Complex number

<em>Hence, no real root exist</em>

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3 years ago

Please answer with clear instructions so that i can apply this to other equations

Evgen [1.6K]

Answer:

x = 0.5

Step-by-step explanation:

2x - 3 = - 2 ( add 3 to both sides )

2x = 1 ( divide both sides by 2 )

x = $\frac{1}{2}$ = 0.5

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2 years ago

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Which of the following demonstrates the correct first step in copying a segment?

grandymaker [24]

Drawn ray

Answer: drawn ray

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3 years ago