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Radda [10]
3 years ago
7

Classify the triangle with the given side lengths as acute, right, obtuse, or not a triangle:

Mathematics
2 answers:
slavikrds [6]3 years ago
8 0

Answer:

It is not a right triangles because 15^2 + 13^2 is NOT EQUAL to 19^2

let x, y, and z be the angles inside the triangle.

Law of cosines says:

19^2 = 13^2 + 15^2 - 2(13)(15)cos x

361 = 169 + 225 - 390 cos x

-33 = -390 cos x

-33/-390 = cos x

11/130 = cos x

x = inverse cosine (11/130)

= 85.14609471338569.....

Per law of sines:

sin x/19 = sin y / 13

(13/19)sinx = sin y

inverse_sine ( (13/19) sin x) = y

y = 42.9810733896016548....

Per law of sines

sin x/19 = sin z / 15

z = inverse_sine( (15/19) sin x)

= 51.8728352950227805....

So it is an acute triangle and yes, these angles add up to 180

Over [174]3 years ago
7 0

Answer:

acute

Step-by-step explanation:

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Alex_Xolod [135]
First you need to find the amount of students who voted.
80 + 160 = 240
160 students out of 240 students who voted, voted for a bulldog. To find the percentage, you need to divide 160 by 240.
160/240 = .6 repeated
You need to move the decimal over two spaces to get the percentage. So then you have 66.6666%. Since it says to round to the nearest whole percent, you need to round the number right after the decimal. 6 rounds the number before it up so you get 67.
So the amount of students that voted for a bulldog is 67%.
3 0
3 years ago
(e) The women on the Maryland field hockey team are not a random sample of all female college field
tia_tia [17]

Answer:

(e) The women on the Maryland field hockey team are not a random sample of all female college field

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3 0
2 years ago
PLEASE HELP ME PLEASE!!!!!!!!
tester [92]

Answer:

length measure of Pillow  = 1.4 m

Step-by-step explanation:

Volume of Wedge = (area of base triangle) * length

Volume of Wedge = (1/2) * base * height  * Length

base = 1 m

height = 0.5 m

Length = L m

Volume = 0.35 m³

=> (1/2) * 1 * 0.5 * L  = 0.35

=> (0.5/2)L = 0.35

=> (0.5/2)L * 2 = 0.35 * 2

=> 0.5L * 2 = 0.7

=> 0.5L / 0.5 = 0.7 / 0.5

=> L = 1.4

Learn more about Volume here: https://brainly.in/question/13396657

5 0
2 years ago
Solve for the base of a triangle where the height is 16cm and area is 104 cm2. What is the base?
Arturiano [62]

Answer:

13cm

Step-by-step explanation:

104 × 2 = 208

208 ÷ 16 = 13cm

(13 × 16) ÷ 2 = 104cm²

6 0
3 years ago
Read 2 more answers
If you know the ratio of inches to centimeters is 1 to 2.54, how can you find the number of centimeters equivalent to 9 inches?
Evgen [1.6K]
Centimeters  = inches * 2.54

9 inches is equivalent to 9*2.54 = 22.86 centimeters
7 0
3 years ago
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