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3 years ago

Please help me with this problem :) show ur work please

Mathematics

1 answer:

Marina CMI [18]3 years ago

7 0

Answer:

$\boxed{w = 14.9} \: or \: you \: can \: say \: \underline{\boxed{w = 15} }$

Step-by-step explanation:

$applying \: the \: pythagorean \: rule : \\ {(hyp)}^{2} = {(adj)}^{2} + {(opp)}^{2} : \\ {w}^{2} = {11}^{2} + {10}^{2} \\ {w}^{2} = 221 \\ w = \sqrt{221} \\ \boxed{w = 14.866068747}$

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Line segment AC where point B is located between A and C solve if AB=39 and AC=46 find BC

jeka94

Answer:

BC = 7

Step-by-step explanation:

AB + BC = AC

39 + BC = 46

BC = 46 - 39

BC = 7

6 0

3 years ago

triangle ABC has vertices at A (-12,-8) B (10,-6) and C (6,14. What is the midpoint of side AC of the triangle?

grigory [225]

Step-by-step explanation:

midpoint of AC=(x¹+x²/2,y¹+y²/2)

=(-12+6/2,-8+14/2)

=(-6/2, 6/2)

=(-3,3)

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3 years ago

What is 12+ n means in verbal expression

Mandarinka [93]

the sum of 12 and a number/n

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3 years ago

PLS HELP a) -3*2-9 b) 2+ -4*-3

alekssr [168]

Answer:

hope this will help you...

Step-by-step explanation:

$a) - 3 \times 2 - 9 \\ solution \\ - 3 \times 2 - 9 \\ - 6 - 9 \\ - 15 \\ \\ b)2 + - 4 \times - 3 \\ solution \\ 2 + - 4 \times - 3 \\ 2 + 12 \\ 14$

7 0

2 years ago

Work out the volume of the shape

pashok25 [27]

Answer:

$\large\boxed{V=\dfrac{1,421\pi}{3}\ cm^3}$

Step-by-step explanation:

We have the cone and the half-sphere.

The formula of a volume of a cone:

$V_c=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have r = 7cm and H = (22-7)cm=15cm. Substitute:

$V_c=\dfrac{1}{3}\pi(7^2)(15)=\dfrac{1}{3}\pi(49)(15)=\dfrac{735\pi}{3}\ cm^3$

The formula of a volume of a sphere:

$V_s=\dfrac{4}{3}\pi R^3$

R - radius

Therefore the formula of a volume of a half-sphere:

$V_{hs}=\dfrac{1}{2}\cdot\dfrac{4}{3}\pi R^3=\dfrac{2}{3}\pi R^3$

We have R = 7cm. Substitute:

$V_{hs}=\dfrac{2}{3}\pi(7^3)=\dfrac{2}{3}\pi(343)=\dfrac{686\pi}{3}\ cm^3$

The volume of the given shape:

$V=V_c+V_{hs}$

Substitute:

$V=\dfrac{735\pi}{3}+\dfrac{686\pi}{3}=\dfrac{1,421\pi}{3}\ cm^3$

7 0

3 years ago