2 years ago

If 2a^2 +3^1a - 5a^2= 9, then a-a^2=

Mathematics

1 answer:

anygoal [31]2 years ago

5 0

Answer: 3.

Explanation:

1) Given expression: 2a² + 3a - 5a² = 9

2) Combine like terms: -3a² + 3a = 9

3) Division property of equalities (divide both sides by 3): - a² + a = 3

4) Rearrange: a - a² = 3

That is the answer requested.

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Suppose a1=12−12,a2=23−13,a3=34−14,a4=45−15,a5=56−16. a) Find an explicit formula for an: . b) Determine whether the sequence is

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2 years ago

Please help I need help ASAP

Inessa [10]

Answer:

a 2.68

b 2.01

Step-by-step explanation:

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2 years ago

In an apartment complex with 28 units, 19 of the renters keep a pet. What percentage does not keep a pet?

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Whenever you have a subset of some set, and you want to know which percentage of the set the subset represents, you simply have to compute

$\dfrac{\text{number of elements in the subset}}{\text{number of elements in the set}}\times 100$

So, in your case, you're wondering what percentage of 28 does 9 represent. So, the formula becomes

$\dfrac{9}{28}\times 100 = 0.32\overline{142857}\times 100 = 32.\overline{142857} \approx 32.14\%$

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1 year ago