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Butoxors [25]
3 years ago
7

Jane incorrectly finds the volume of the cone using the following work. Explain Jan’s error and find the correct volume AND surf

ace area. Show all work

Mathematics
1 answer:
o-na [289]3 years ago
4 0

Answer:

V=39.25. the height is not 6.25, 6.25 is the slope. you have to use Pythagoras theorem to find the height, then you can find the volume.

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HELP PLEASE!!
Marizza181 [45]

Answer: (2.5, 5)


Step-by-step explanation:

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4 0
3 years ago
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What is 2.16 repeated as a decimal
Zarrin [17]
Ok, so what we want to do here is first remove the repeating decimal.

x=2.16 repeating
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Subtract 10x=21.6 repeating from 100x=216.6 repeating. This will get rid of the repeating numbers.

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__________________
90x=195

Divide both sides by 90.

x=195/90

Now you can simplify that into 13/6.


5 0
2 years ago
Type the correct answer in the box.<br><br><br> In this triangle cosA/cosB= blank
Elina [12.6K]

Answer:

1

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. The types of triangles are scalene triangle, equilateral triangle, right angled triangle and obtuse triangle.  

Trigonometric functions are used to show the relationship between the angles of a triangles and the sides of the triangle. For a right angled triangle, the ratio of the sides can be gotten using trigonometric functions such as:

cosθ = adjacent/hypotenuse, sinθ = opposite/hypotenuse, tanθ = opposite/adjacent

Given the right angle triangle:

cos(A) = adjacent / hypotenuse = 3 / 4.24

cos(A) = 3 / 4.25

cos(B) = adjacent / hypotenuse = 3 / 4.24

cos(B) = 3 / 4.24

cos(A) / cos(B) = (3 / 4.24) ÷ (3 / 4.24) = 1

cos(A) / cos(B) = 1

3 0
3 years ago
Evaluate f(x) = -4x - 5 for x = -1. <br><br> A. -9<br> B. -1<br> C. 1<br> D. 4
Nadusha1986 [10]
F(x) = -4x - 5

Subtitute the value of x to the equation:

f(-1) = -4 · (-1) - 5 = 4 - 5 = -1
7 0
3 years ago
Read 2 more answers
Please quickly answers thus
Margaret [11]

Answer:

i believe it's c. im not 100% sure though!

Step-by-step explanation:

please mark brainliest, give a thanks, and rate a five stars if this helped! feel free to ask anymore questions if you need any more help! thanks!

(lol optional): add my sc: tealyn337

5 0
3 years ago
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