31 students do their homework every night
87g divided by 10 = 8.7
8.7 times 7 = 60.9
60.9g of sugar is needed to make 7 cakes
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By comparing all the options with the formula of sum of cubes and difference of cubes we get that
is sum of cubes
<h3>
What is formula of sum of cubes and difference of cubes?</h3>
Formula of sum of cubes and difference of cubes are following

(a)

by comparison with formula we can say that this is neither sum or nor difference of cubes.
(b)

by comparison with formula we can say that this is neither sum nor difference of cubes.
(c)

we can say that this is neither sum nor difference of cube as it's difference of squares.
(d)

by comparison with formula this is equal to

Hence this is sum of cubes
(e)

by comparison with formula we can say that this is neither sum nor difference of cubes.
By comparing all the options with the formula of sum of cubes and difference of cubes we get that
is sum of cubes
To know more about cubes visit: brainly.com/question/107100
Step-by-step explanation:
Angle EGF = 0.5(180° - 50°) = 65°.
Angle CGF = 180° - Angle EGF = 115°.
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