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astraxan [27]
3 years ago
12

Help with number 5 please

Mathematics
1 answer:
Goryan [66]3 years ago
6 0

Answer:

22,5 km

Step-by-step explanation:

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Classify the triangle by its sides and by its angles
VMariaS [17]

Answer:

Scalene obtuse.

Step-by-step explanation:

Scalene means that none of the sides are the same.  You can tell by looking at the triangle that none of the sides are the same.  An obtuse triangle is a triangle with one obtuse angle.  It is a close call between obtuse and right, but I believe that I can definitely say that the angle is a little more than 90 degrees, and is therefore obtuse.

7 0
2 years ago
Please help me with this math problem
givi [52]

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5 0
3 years ago
What is the area of 16 inches and 3 feet in square meters
Artyom0805 [142]
You just multiply 16 and 3 and it gives you 58
3 0
3 years ago
To get the x and the y
Roman55 [17]

Answer:

x = 16

y = 20

Step-by-step explanation:

the left part of the triangle can be solved first as it already has one angle and 1 side, we use trigonometry for this.

since we have 2 sides and 1 angle, to find the third side length we use the pythagoras theorem. a² + b² = c²

; 9² + 12² = c²

; 225 = c²

;√225 = c

; 15 = c

since we have all the lengths of the triangle, we can find out the angle opposite to the side length '9',

; \frac{Sin x}{9} = \frac{sin90}{15}

; \frac{Sin 90}{15} x 9 = Sinx

36.86 = x

now, we look at the triangle as a whole, the top angle being 90 degrees, we know that we have 36.86.

; 90 - 36.86 = 53.13

\frac{y}{Sin 90} = \frac{12}{Sin 36.86}

; \frac{12}{sin 36.86} x Sin 90 = 20

y = 20

again, since we have 2 sides of a right angled triangle we use a² + b² = c²

we arrange this formula since we have the hypotenuse

; 20² - 12² = 256

; √256 = x

; 16  = x

3 0
3 years ago
Simplify 12(c-3)+27+c-9c
sveticcg [70]
12c - 36 + 27 + c - 9c
= 4c - 9
7 0
3 years ago
Read 2 more answers
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