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3 years ago

Ok here we go plz help me

Mathematics

1 answer:

Pepsi [2]3 years ago

5 0

Answer:

I don't have much time cause Zoom is gonna start but the answer to 8 is <u><em>B</em></u>

Step-by-step explanation:

The answer is <em>B</em> because since it's a triangle it will always add up to 180.

Triangles= 180 always

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Line I is parallel to line m. If the measure of <6 is 75, what is the measure of <2?

Tamiku [17]

Answer:

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2 years ago

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Find the center and radius for the circle defined by the equation: x2+y2+1/2x-2y-5=0.

iren2701 [21]

Answer:

(x + [1/4])2 + (y - 1)2 = (97/16)

Step-by-step explanation:

(x + [1/4])2 + (y - 1)2 = (97/16)

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2 years ago

Choose the correct expressions using the fewest number of bases possible that are equivalent to the current expression. Select A

rjkz [21]

<h3>2 Answers: Choice B, Choice C</h3>

The rule we use here is $\frac{a^b}{a^c} = a^{b-c}$

If the font size is too small, then it says (a^b)/(a^c) = a^(b-c)

We subtract the exponents when dividing exponentials like this. The bases must be the same.

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3 years ago

The hanger image below represents a balanced equation

kolezko [41]

Answer:

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Step-by-step explanation:

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3 years ago

17. A hemisphere of lead of radius 7 cm is cast into a right circular cone of height 49 cm. Find

Pavlova-9 [17]

Answer:

$r = 3.74cm$

Step-by-step explanation:

Given

Hemisphere

$Radius = 7cm$

Cone

$Height = 49m$

Required

Determine the radius of the cone

First, we calculate the volume (V1) of the hemisphere.

$V_1 = \frac{2}{3}\pi r^3$

Substitute 7 for r

$V_1 = \frac{2}{3}\pi * 7^3$

$V_1 = \frac{2}{3}\pi * 343$

$V_1 = \frac{686}{3}\pi$

Volume (V2) of a cone is:

$V_2 = \frac{1}{3}\pi r^2h$

Because the lead is cast into a cone, then they have the same volume.

So, we have:

$\frac{686}{3}\pi = \frac{1}{3}\pi r^2h$

$686 = r^2h$

Substitute 49 for h

$686 = r^2 * 49$

Divide both sides by 49

$r^2 = \frac{686}{49}$

$r^2 = 14$

$r = \sqrt{14$

$r = 3.74cm$

<em>Hence, the radius of the cone is 3.74cm</em>

5 0

3 years ago