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Talja [164]
3 years ago
5

PLEASE HELPPPP How do I mark brainiest?

Mathematics
2 answers:
motikmotik3 years ago
7 0

Answer:

There should be a crown that you can press which represents a brainiest

Step-by-step explanation:

vesna_86 [32]3 years ago
3 0

Answer: To mark brainliest you have to press the crown icon on the users answer

Step-by-step explanation:

hope this helps lad have a great day :)

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Which 2 options are correct?
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Answer:

A,C

Step-by-step explanation:

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3 years ago
A company manufactures aluminum mailboxes in the shape of a box with a half-cylinder top. The company will make 1863 mailboxes t
forsale [732]

Answer:

3433 m²

Step-by-step explanation:

From the image, we have a rectangular box without cover and half a cylinder on top.

Formula for surface area of rectangular box with top is;

S = 2(lh + wh + lw)

From the image,

l = 0.6 m

w = 0.4 m

h = 0.55 m

Thus;

S = 2((0.6 × 0.55) + (0.4 × 0.55) + (0.6 × 0.4))

S = 1.58 m²

Now, since the top is not included for this figure, then;

Surface area of this rectangular box is;

S1 = 1.58 - (lw) = 1.58 - (0.4 × 0.6) = 1.34 m²

Surface area of a cylinder is;

S = 2πr² + 2πrh

r is radius and in this case = 0.4/2 = 0.2 m

h = 0.6

S = 2π(0.2² + (0.2 × 0.6))

S = 1.005 m²

Since it is half cylinder, then we have;

S2 = 1.005/2

S2 = 0.5025 m²

Total surface area; S_t = S1 + S2

S_t = 1.34 + 0.5025

S_t = 1.8425 m²

This is the surface area of one mail box.

Thus, for 1863 mailboxes, total surface area is;

S = 1863 × 1.8425 = 3432.5775 m²

Approximating to the nearest Sq.m gives;

S = 3433 m²

6 0
3 years ago
What is a negative minus a negative
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Answer:

It would be a negative or positive depending on the situation.

Step-by-step explanation:

A negative minus a negative would result in either a positive or negative. For example, -8 - (-9) would be 1 while -8 - (-7) would be -1. If the negative number your subtracting is greater than the number you're subtracting from then it will be positive, vice versa.

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Please answer the question
Liono4ka [1.6K]

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Step-by-step explanation:

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2 years ago
I need 3 multiples of 10 that has 3 as one of the digits
d1i1m1o1n [39]
3 multiples of 10 that have 3 in them are 30, 300, and 3000
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3 years ago
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