2 years ago

Can some please help me I will mark u brilliant

Mathematics

1 answer:

brilliants [131]2 years ago

6 0

Question 2: -4/3

Question 3: -7/20

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The equation and answer

dolphi86 [110]

Answer:

The correct answer is 47 degrees.

Step-by-step explanation:

Use cosine.

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3 years ago

[Read attachment]

attashe74 [19]

Answer:

r=2.9cm

Step-by-step explanation:

we know the formula, mass= density*volume

as a result we can figure out the volume = mass/density

=485/8 cm^3

=60.625cm^3

here comes another formula of volume of cone = $\frac{1}{3}$ $\pi$ $r^{2}$ $h^{}$

we will use this to find the radius,

$\frac{1}{3}$ $\pi$ $r^{2}$ $h^{}$ =60.625

$\pi$ $r^{2}$ $h^{}$ =181.875

h is 70mm which we will turn to 7cm

$\pi$ $r^{2}$ *7=181.875

$r^{2}$ =8.27

r=2.875825cm

r=2.9cm

nice question. hope this helps

6 0

2 years ago