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Drupady [299]
3 years ago
6

Which of the following lengths will form a triangle?

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

9514 1404 393

Answer:

  C: 11.5 cm, 4.2 cm, 7.6 cm

Step-by-step explanation:

In order for the lengths to form a triangle, the sum of the shortest two must exceed the longest.

A. 5.4 +5.4 = 10.8 < 12.6

B. 1.3 +5.9 = 7.2

C. 4.2 +7.6 = 11.8 > 11.5 . . . . will make a triangle

D. 3.1 +6.6 = 9.7 < 10.4

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HELP IN NEED!
laiz [17]

Answer:

AB=12\sqrt{3}\ cm

Step-by-step explanation:

If AB is tangent to the circle, then angle ABO is right angle and triangle AOB is special 30^{\circ}-60^{\circ}-90^{\circ} triangle. In this triangle, the leg that is opposite to the angle of 30° is half of the hypotenuse. Thus,

AO=2BO=2\cdot 12=24\ cm.

By the Pythagorean theorem,

AB^2=AO^2-BO^2,\\ \\AB^2=24^2-12^2,\\ \\AB^2=576-144=432,\\ \\AB=12\sqrt{3}\ cm.

6 0
3 years ago
Select all the correct answers.
lara31 [8.8K]

Answer:

B i think

Step-by-step explanation:

i think its B because all the other ones don'e look right. hope its correct. :)

3 0
2 years ago
Read 2 more answers
Multiply. Write a the product as a mixed number
harina [27]

1. 7 1/2

2.5 1/3

3. 7 1/2

4.9 3/5

8 0
3 years ago
A triangular pyramid with a height of 9 inches has a volume of 63 cubic inches. If the height of the triangular base is 6 inches
Bond [772]

Option D: 21 in is the base length of the triangular base.

Explanation:

Given that a triangular pyramid with a height of 9 inches has a volume of 63 cubic inches.

The height of the triangular base is 6 inches.

We need to determine the base length of the triangular pyramid.

The base length of the triangular pyramid can be determined using the formula,

Volume =\frac{1}{3} \times Bh

Substituting Volume=63 and Height=9 in the above formula, we get,

63 =\frac{1}{3} \times B(9)

Simplifying the terms, we get,

63 =3B

Dividing both sides by 3, we have,

21=B

Thus, the base length of the triangular pyramid is 21 in

Hence, Option D is the correct answer.

3 0
3 years ago
Which equation can be used to find the length of ? (10)sin(40o) = AC (10)cos(40o) = AC = AC = AC
katovenus [111]
The complete question in the attached figure

we know that

sin40° = opposite side / hypotenuse
opposite side =AC
hypotenuse = AB-------> 10 in
so
sin 40=AC/AB---------> AC=AB*sin 40-------> AC=10*sin 40

the answer is
AC=10*sin 40

5 0
3 years ago
Read 2 more answers
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