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BARSIC [14]
3 years ago
9

A triangle can have sides of length 7, 9, and 18. true false

Mathematics
1 answer:
OleMash [197]3 years ago
5 0

Answer:

That is false.

The sum of any two sides in a triangle must be greater than the length of the third side.

We can see that: 7+9 = 16, and 16 is not greater than 18.

So, this is not a triangle.

Let  me know if this helps!

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Nadia bought 4 bags of popcorn at the movies. She shared the popcorn with her 7 friends. Each bag held 6 cups of popcorn. If eve
Ivanshal [37]
They got 3 cups each because nadia+7 make 8 ppl and theres 24 cups in total that we know of so 24÷3=8
3 0
3 years ago
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A train track through a mountain is 1600 feet long and makes an angle of 1.6 with the horizontal. What is the change in elevatio
Anna71 [15]

Step-by-step explanation:

law of sine :

a/sinA = b/sinB = c/sinC

with the sides and correlating angles being always opposite to each other.

we are dealing with a right-angled triangle here.

the train track is the Hypotenuse (the side opposite of the 90° angle) : 1600 ft.

the horizontal level "connection" from beginning to the end of the track is one leg, and the elevation difference at the end of the track is the second leg.

the 2 legs enclose a 90° angle, as the elevation goes straight up from the horizontal level.

so, we have

1600/sin(90) = elevation difference / sin(1.6)

sin(90) = 1

1600 = elevation difference / sin(1.6)

elevation difference = 1600 × sin(1.6) =

= 1600 × 0.027921639... =

= 44.67462196... ft

≈ 44.7 ft

3 0
2 years ago
Please solve it the answer is (a+b-2) (a-b+2) should be take out question a^2-b^2+4b-4
iVinArrow [24]

Answer:

see explanation

Step-by-step explanation:

Given

(a + b - 2)(a - b + 2)

Each term in the second factor is multiplied by each term in the first factor, that is

a(a - b + 2) + b(a - b + 2) - 2(a - b + 2) ← distribute the parenthesis

= a² - ab + 2a + ab - b² + 2b - 2a + 2b - 4 ← collect like terms

= a² - b² +4b - 4

3 0
3 years ago
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Can someone please help me on these two questions tysm
Rashid [163]
Plug them in:

x + 5y = 18 
x - 3y = 10

F. (1,13)
G. (13,1)
H. (-2,4)
J. (-2,-4)

1 + 5*13 = 18 is obliviously not true so that takes out the first option.
 
13 + 5*1 = 18 : This is true but we have to check the next one.
13 - 3*1 = 10 : This is also true so we know this is the answer. We don't really need to check the other 2 but u can if u want to.

Hope that helped :) <span />
8 0
3 years ago
Multiply <br> (5x-1)(6x^2+3x+7)<br><br> SHOW WORK
notsponge [240]

sorry for using printed paper, I tried my best to avoid the lines

4 0
3 years ago
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