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vekshin1
2 years ago
6

All the students in a science class complete a 15-point

Mathematics
1 answer:
AfilCa [17]2 years ago
4 0

Answer:

first one is the answer

Step-by-step explanation:

if x + y =. y = x +15

mark me brainliest please

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HELPP PLEASE
umka21 [38]

Answer:

27.5 mm

Step-by-step explanation:

The game piece has the shape of two identical square pyramids attached at their bases. Given that the perimeters of the square bases are 80 millimeters, and the slant height of each pyramid is 17 millimeters.

Let the side length of each of the side of the base of the pyramid be b, hence:

perimeter = 4b

80 = 4b

b = 20 mm. half of the side length = b/2 = 20 / 2 = 10 mm

The slant height (l) = 17 mm, Let h be the height of one of the pyramid, hence, using Pythagoras theorem:

(b/2)² + h² = l²

17² = 10² + h²

h² = 17² - 10² = 189

h = √189

h = 13.75 mm

The length of the game piece = 2 * h = 2 * 13.75 = 27.5 mm.

6 0
3 years ago
Earth travels about 66,600 miles per hour as it revolves around the Sun. How far does Earth travel in 15 seconds?
o-na [289]

Step-by-step explanation:

Miles travelled in 1h=66600

Miles travelled in 1 sec=66600/3600

=18.5miles

Miles travelled in 15 seconds =18.5×15

=<em><u>277.5miles</u></em>

4 0
3 years ago
Read 2 more answers
(4x + 24)/x
solmaris [256]

Step-by-step explanation:

this is an integer of the interior comes from into juice

7 0
3 years ago
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What is the midpoint of AB?
BabaBlast [244]

Answer:

A picture of the problem might help

7 0
3 years ago
Help please. simplify your answer.
Lapatulllka [165]
3/8 * 6/7
6*3=18
8*7=56
18/56 simplified is 9/28
5 0
3 years ago
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