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MissTica
3 years ago
9

Which two points are not on the graph 2x+3y-z-12=0

Mathematics
1 answer:
kvv77 [185]3 years ago
5 0
Plug all three answers in and see which one does not equal 0
A: 2(1)+3(1)-7-12≠0
B: 2(6)+0-0-12=0
C: 2(3)+3(3)-3-12=0

So A. I don't know why it says two (?) points?
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How do you find the length of both legs of a right triangle with only the hypotenuse
Lina20 [59]
If you had the hypotenuse  and one of the legs you could subtract the to using Pythagorean theorem. you cant answer the question unless you have another leg or a degree or a right triangle.  <span />
8 0
3 years ago
A triangular pyramid is formed from three right triangles as shown below.
Lady bird [3.3K]

ΔADC is a right angle triangle, we will use the Pythagorus Theorem to find the length CD.

Formula of the Pythagorus Theorem :  

⇒ a² + b² = c²

⇒ AD² + CD² = AC²

The value of AD is 54 and the value of AC is 90:

54² + CD² = 90²

Solve for CD:

54² + CD² = 90²

CD² = 90² - 54²

CD² = 5184

CD = √5184

CD = 72

ΔADC is also a right angle triangle, we will use the Pythagorus Theorem to find the length BD.

Formula of the Pythagorus Theorem :  

⇒ a² + b² = c²

⇒ BD² + CD² = BC²

The value of CD is 72 and the value of BC is 97:

BD² + 72² = 97²

Solve for BD:

BD² = 97² - 72²

BD² = 4225

BD = √4225

BD = 65

Answer: The length of BD is 65 units.

7 0
3 years ago
What is the solution to the following equation x^2+5x+7=0
Nat2105 [25]

Answer:

if ypu are looking for the minimum it is ( - 5/2 , 3/4) but if you are looking for the vertical intercept it is ( 0 , 7)

6 0
3 years ago
please help me I’m begging you. I need the right answers and an explanation how you got that right answer. thanks
Nat2105 [25]

Answer:

Step-by-step explanation:

I think its a normal 7 and a normal 3 then a -4 and a -9 and a -10

7 0
3 years ago
89.87 is 215% of what number
andre [41]
<span>215% of 89.87=193.2205</span>
4 0
3 years ago
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