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Evgesh-ka [11]
2 years ago
6

Which of the following is not an acceptable form of proof?

Mathematics
2 answers:
Arisa [49]2 years ago
5 0
I think its  <span>B. Two-column proof 
</span>
Molodets [167]2 years ago
3 0

Answer:

D: proof by contradiction

Step-by-step explanation:

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the perimeter of an equilateral triangle is 39 centimeters. What is the length of an altitude of the triangle ?​
victus00 [196]

Answer: h = 11.26cm

Step-by-step explanation:

Equilateral triangle has equal sides, let the side be xcm , then the perimeter is 3x

Therefore:

3x = 39

x = 39/3

x = 13cm

To find the altitude , we will apply Pythagoras theorem , that is

13^{2}=h^{2}+6.5^{2}

Therefore:

h^{2}=13^{2}-6.5^{2}

h^{2}=169-42.25

h^{2}=126.75

take the square root of both sides

h = 11.26cm

8 0
2 years ago
Plzzzzzzzzzzzzz help
bija089 [108]

Answer:

i think it's circumference

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
HELP ASAP PLZ ANSWER BOTH QUESTIONS!!! THXS
nata0808 [166]
1. adaption means to fiscally and mentally  changing your ways from an environment to a new environment. for an animal or plant to adapt to a new enviroment like the oil in the soil turns green plants red and green beetles red.

7 0
2 years ago
McKenzie makes and sells quilts at an art fair. The materials for each quilt cos t$30.50. She sells the quilts for $80. If "n" r
Nitella [24]

Answer:

Total profits = 49.50n

Step-by-step explanation:

Cost of each quilt = $30.50

Selling price of each quilt = $80

Profits = selling price - cost price

= $80 - $30.50

= $49.50

Profits = $49.50

If n = number of quilts she sells

which expression could be used to represent her total profits?

Total profits = profits of each quilt × number of quilt sold

= $49.50 × n

= 49.50n

Total profits = 49.50n

4 0
2 years ago
Can someone help me with this?
tatiyna
Yes because PROPORTIONAL means the lines start on the axis which is the zero and it also has to be in a even line so yes it is proportional
6 0
3 years ago
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