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Sladkaya [172]
2 years ago
13

Can you all help me also answer this question 3 and 4

Mathematics
1 answer:
vladimir1956 [14]2 years ago
3 0

Step-by-step explanation:

The answer for third is D, you have multiple choice in fourth which I can't see at all...

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A triangle has sides 12cm, 9cm and 15cm. Is the triangle right-angled? Justify your answer
marusya05 [52]

Answer:

yes

Step-by-step explanation:

Yes this triangle is right angled and can be justified using the Pythagorean theorem. The theorem states that: a^{2} +b^{2} = c^{2}. Substitute using the given values:

(9^2)+(12^2)=15^2

81 + 144 = 255

255 = 255.

It satisfies the theorem therefore it is a right angle triangle.

3 0
2 years ago
Any help would be great
zhannawk [14.2K]

Answer:

V = 137.2

Step-by-step explanation:

We are given the volume equation. Simply plug in your <em>r</em> into the equation and calculate and you should get 137.189 as your answer.

7 0
2 years ago
(Look at the image attached!)
Romashka [77]

Answer:

180-80-55

then you got the answer

6 0
2 years ago
(7x^6+2x^5-3x^2+9x)+(5x^5+8^3-6x^2+2x-5)
Reil [10]

Answer:

Step-by-step explanation:

Combine like terms

7x^6

2x^5+5x^5= 7x^5

8x^3

-3x^2-6x^2= -9x^2

9x+2x= 11x

-5

Put back into order

7x^6+7x^5+8x^3-9x^2+11x-5

7 0
3 years ago
At Lorenzo's Hats, 60% of the 60 hats are baseball caps. How many baseball caps are there?
Troyanec [42]

Answer:

36

Step-by-step explanation:

60 times 60% (0.6) = 36

5 0
2 years ago
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