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Law Incorporation [45]
2 years ago
8

I don’t understand what to do on these question, some help would be nice (trigonometry)

Mathematics
1 answer:
Bumek [7]2 years ago
8 0

Step-by-step explanation:

> find the angle of center circle:

cos~¹ 5/(5+12) = cos~¹ 5/17 = 72°

so the sector area of the shaded

region =

(360-72)/360 × 3.14 × 5²

= 288/360 × 78.5

= 62.8

> the height of triangle (red Line) =

4×tan 72° = 4× 3.078 = 12.31

the height of pyramid (green

Line) = √12.31²-8.5² =√74.16

= 8.61

so the volume of pyramid =

⅓×(17×8)×8.61 = 390.32

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If y varies directly as x and y = 3 when x = 24, find y when x = -16​
HACTEHA [7]

Answer:

-2

Step-by-step explanation:

y/x=constant

3/24=y/(-16)

y=-2

6 0
3 years ago
Please help asap :((((
White raven [17]

Answer: A

Step-by-step explanation:

Focus on what it is saying. It is saying that 5x IS LESS THAN OR EQUAL TO 15.

So we are looking for smaller numbers, that is, values of x, in order to make this statement true.

So on a number line we are looking for the left part shaded in.

Furthermore... notice that the sign has "or equal to". Thus the circle is going to be shaded in. The circle is not going to be open and empty. Through this we have eliminated answers B and C.

So the answer is A because— remember— the left side of the number line is shaded. It encompasses negative numbers. A negative number times 5 will definitely be less than 15.

4 0
2 years ago
In october 2012, apple introduced a much smaller variant of the apple ipad, known as the ipad mini. weighing less than 11 ounces
Allushta [10]
F(x) = \left \{ {{1} \atop {3.5}} \right.                        8.5≤
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8 0
3 years ago
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Butoxors [25]
Here is the table with the filled in answers

4 0
2 years ago
Read 2 more answers
if there are 12 dogs that sell for $104 and 8 cats that sell for $25. At the end of the day there are 4 dogs left and 5 cats lef
Vinil7 [7]

Initially there were 12 dogs

dogs left at the end of day =4

number of dogs sold=12-4=8

price of one dog=$104

price of 8 dogs = 104*8= $832

initially there were 8 cats

cats left at the end of day =5

number of cats sold =8-5=3

price of one cat= $25

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ratio of sales for dogs to cats = 832/75

7 0
3 years ago
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