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Alenkasestr [34]
3 years ago
5

I need help on this math questions please. ​

Mathematics
1 answer:
Anettt [7]3 years ago
5 0

Answer:

(a)

perimeter = 2 + 8 + 4 + 7x + 4x

(b)

perimeter = 11x + 14

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How can I do this ???​
LuckyWell [14K]

Answer:

The triangle EFG can be constructed with the following specifications: EF = 8\,cm, FG = 7\,cm, EG = 12\,cm, E \approx 34.093^{\circ}, F \approx 106.068^{\circ}, G \approx 39.838^{\circ}.

Step-by-step explanation:

A triangle is formed by either knowing the lengths of its three sides or knowing two angles and the length of a side or knowing a angle and the lengths of two sides. By Geometry, we know that sum of internal angles in triangles equals 180°. In order to construct this triangle, we need to know the measures of angles E, F and G by means of the Law of Cosine:

Angle E

E = \cos^{-1}\left[\frac{(7\,cm)^{2}-(12\,cm)^{2}-(8\,cm)^{2}}{-2\cdot (12\,cm)\cdot (8\,cm)} \right]

E \approx 34.093^{\circ}

Angle F

F = \cos^{-1}\left[\frac{(12\,cm)^{2} - (8\,cm)^{2} - (7\,cm)^{2}}{-2\cdot (8\,cm)\cdot (7\,cm)} \right]

F \approx 106.068^{\circ}

Angle G

G = \cos^{-1}\left[\frac{(8\,cm)^{2}-(12\,cm)^{2}-(7\,cm)^{2}}{-2\cdot (12\,cm)\cdot (7\,cm)} \right]

G \approx 39.838^{\circ}

The triangle EFG can be constructed with the following specifications: EF = 8\,cm, FG = 7\,cm, EG = 12\,cm, E \approx 34.093^{\circ}, F \approx 106.068^{\circ}, G \approx 39.838^{\circ}.

4 0
3 years ago
I WILL GIVE BRAINLIEST YALL SEE THOSE POINTS!!!!!!
ICE Princess25 [194]

Answer: 2,72 and 72, 2

Step-by-step explanation:

5 0
3 years ago
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Which two values are irrational?
prisoha [69]
E is irrational as well as CV52
6 0
3 years ago
Help please, thanks.
Vladimir79 [104]

Answer:

B

Step-by-step explanation:

C = R/1.8 - 273

C + 273 = R/1.8

1.8 * (C + 273) = R

1.8 can also be read as the fraction 9/5.

9/5 * (C + 273) = R

Thus your answer is B. Hope I helped!

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3 years ago
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Match the equation to the graph where n is the Number of Burgers and C is the cost.
Softa [21]

Answer:

How did life during the Industrial Revolution differ in the North and the South?  

In what ways did the Industrial Revolution make life better?

How did it make life more difficult? How did life during the Industrial Revolution differ in the North and the South?  

In what ways did the Industrial Revolution make life better?

How did it make life more difficult?

Step-by-step explanation:

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