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Tpy6a [65]
3 years ago
12

PLEASE HELP ASAP! I have reposted this 2 times and no one will help me.:( please answer all 4 thank you so much!! i need this do

ne in an hour!!!​

Mathematics
1 answer:
erik [133]3 years ago
5 0

Answer:

5. DE

6. 3 cm

7. 20 in

8. ΔDCF

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Given the lengths of two sides of a triangle, find the range for the length of the third side (between what two numbers should t
frozen [14]

Answer:

The length of the third side of given triangle lies between 6.5 and 19.9.

Step-by-step explanation:

The law of cosine is as follows

 c^{2} =a^{2}+b^{2}+2abcos\alpha---------------1

⇒ a and b are the given sides of the triangle and c is the third side, and \alpha is the angle between a and b .

In equation 1 , the maximum and minimum values of cos\alpha are 1 and -1.

 so the value of c  lies in between

⇒ \sqrt{a^{2}+b^{2}-2ab   } and  \sqrt{a^{2}+b^{2}+2ab  }   = |a-b| and |a+b|

Given a=13.2 and b=6.7 so the the side lies in between  |13.2-6.7| and |13.2+6.7|

  so the third side lies between 6.5 and 19.9

3 0
2 years ago
The product of two factors is x2+ 6x + 8. If one of the factors is (x + 4), what is the other factor?
ch4aika [34]
(x + 4) (x + 2)
=x^2 +2x + 4x + 8
=x^2 + 6x + 8
the other factor is (x + 2)
6 0
3 years ago
9. Sophia and Lily went to Tacos Galore for lunch. Sophia ordered 3 tacos and 2 burritos and the total of her
Dimas [21]

Answer:

There is no way to know.

Step-by-step explanation:

You need to know how much either burritos cost or how much tacos cost to answer that, let your teacher know.

6 0
3 years ago
HELP???? PLEASE!!! HELP?????
saul85 [17]
.55 is the answer. I hope this helped a great deal!
5 0
3 years ago
HELPPPPPPPPPP
mrs_skeptik [129]

Answer:

5 1/3 gallons

Step-by-step explanation:

Equation: 8 1/6 - 2 5/6

8-2=6

1/6-5/6= -4/6

6-4/6=5 2/6

Simplify:

5 1/3 gallons

7 0
2 years ago
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