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Ierofanga [76]
3 years ago
8

3n+18= n² solve for n

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
7 0
It =6
i hope this helped you
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Which of the following uses logical deduction to prove the truth (or falsehood) of a specific statement?
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<span>Direct proof. A direct proof is a way of establishing the truth or falsehood of a given mathematical statement by a combination of established facts, usually axioms, lemmas and theorems. It assumes the hypothesis of a conjecture is true and then uses a series of logical deductions to prove that the conclusion as well.</span>
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4 years ago
For which nonnegative value of x is the expression 5+x/25-x^2
erica [24]

Answer:

Step-by-step explanation:

\frac{5+x}{25-x^2} >0\\=\frac{5+x}{(5+x)(5-x)} \\=\frac{1}{5-x} >0\\if~5-x>0\\or~5>x\\or x

8 0
3 years ago
I would really appreciate if someone would help me i don’t understand
alekssr [168]

Answer:

D. 48

Step-by-step explanation:

In the experiment, 16/40 landed exactly on heads. If you do 16/40 * 3/3 = 48/120.

This means that you can estimate 48 of the next 120 trials have 2 coins showing heads.

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3 years ago
An artist builds a sculpture out of metal and wood that weighs 14.9 kilograms.
Ira Lisetskai [31]

Answer:

Given is a sculpture that is built up of metal and wood, and the weight of this sculpture is 14.9 kilograms.

It says that three-fourth of the total weight is metal and says to find the weight of wooden part.

We can find the weight of metal part and then subtract it from the total weight to calculate the answer.

Step-by-step explanation:

Total weight = 14.9 kilograms.

Metal part = three-fourth of total weight =

Wooden part = 14.9 - 11.175 = 3.725 kilograms.

Hence, the wooden part is 3.725 kilograms.

8 0
3 years ago
Read 2 more answers
Work out the surface area of this cylinder.<br> Radius= 12 cm<br> Height= 35 cm
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3543.72 cm^2.

Hopefully it helped ya
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3 years ago
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