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Nastasia [14]
3 years ago
7

Suppose a triangle has sides a,b, and c, and that a^2+b^2>c^2. Let theta be the measure of the angle opposite the side of len

gth c. Which of the following must be true?
Check all that Apply.

A. theta or delta is an acute angle.
B. The triangle is not a right triangle.
C. cos0>0
D. The triangle is a right triangle.

Mathematics
2 answers:
xenn [34]3 years ago
4 0
B
b 
b 
b i think it will be b
emmasim [6.3K]3 years ago
3 0

Answer with explanation:

It is given that , a triangle having side length , a , b and c follow the Inequality

 →→ a² + b² > c²

→c²-a²-b² <0 or, a²+b²-c²>0 -------(1)

Law of Cosines

c²=a²+b²-2 a b cos C

→ a²+b²-c²= 2 a b cos C

→ 2 a b cos C >0------[Using (1)]

Here, ∠C=theta

So, cos (Theta) > 0

B. The triangle is not a right triangle.

Option B and Option C

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HELLLLLLP!!!PLZ Any one know this?
Thepotemich [5.8K]

Answer:

- the angle at H is 120 degrees

- the missing segment is DC

Step-by-step explanation:

The "roof" FGH is bigger than 90 degrees because FG and GH are not acute. .

Without instruction we can assume FGH is 120 degree.

This means GHF is 30 degrees to complete the triangle FGH.

So the angle around H, or JHG is 90 + 30 = 120 degrees

For the ratio, we can simply look at the comparison between the small figure   DJHGF

and the large figure DCBAE, and we see that the denominator

DJ in the small figure is DC in the large figure.

8 0
3 years ago
The painted area of a rectangular canvas is 72 square inches and there is a 4 inch unpainted border on all sides. The dimensions
umka21 [38]

Painted Area: 72 in^2

Unpainted Border on all sides: ====> 4 in"

4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 = 72



Answer: =====> 66 inches



My Internet kept messing up on me here, but the Answer is 66 inches, Sorry I couldn't finish working out the problem, going to check out my internet. - Thanks - P.




Hope that helps!!!! : )

7 0
4 years ago
im going give 60 point please answer The temperature inside the command center is 21 degrees C. The temperature outside the comm
kolbaska11 [484]

Answer:

33 degrees

Step-by-step explanation:

It is 21 degrees inside the command center and negative 12 degrees outside.

You want to find the difference between these, which means you want to subtract.

That will look like:

21 - (-12) = ?

since you have two negative signs next to each other, they will cancel each other out.

Our new equation:

21 + 12 =

21 + 12 = 33

The difference between these two temperatures is 33 degrees.

4 0
3 years ago
8. Solve 10+ 6(-9 - 4x) = 10(x - 12) + 8.<br> A. X=-18<br> O B. x = 17<br> O C.x= 2<br> O D. X = -6
RUDIKE [14]

Your answer should be C. X = 12

Steps to --> 10+ 6(-9 - 4x) = 10(x - 12) + 8

10 + 6 (-9 - 4x)

= 10 - 54 - 24x

= -24x - 44

10 (x - 12) + 8

= 10x - 120 + 8

= 10x - 112

-24x = 10x - 68

-24x - 10x = 10x - 68 - 10x

-34x = -68

-34x/-34 = -68/-34

x = 2

5 0
3 years ago
HELP ME OUT PLS !!!! THIS IS EASY
MakcuM [25]

Answer:

C) 123 cm^2

Step-by-step explanation:

well if we find CD we can cut striat down C and do area of a triangle plus the area of the rectangle.

to find CD you need length of BC

BC^2 = AC^2-AB^2 --> BC^2 = 400-100 --> BC^2 = 300

BC = 300^2 --> about 17 causeing CD being 4

now we have info

triangle area is BxHx 1/2 --> 17x10x1/2 --> 85cm^2

Now we do the small rectangle area is BxH --> 4x10 --> 40cm^2

85 + 40 = 125cm^2

the only one close is 123cm^2

4 0
3 years ago
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