Helppppppp what's the answer??????

Mathematics

1 answer:

Simora [160]3 years ago

3 0

Find the axis of symmetry.
x= 1/2

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(3) An estate was to be divided among five people. The first person received 1/8 of the estate. The next two people each receive

Anna35 [415]

Answer:

3/8

Step-by-step explanation:

An estate has to be divided among the 5 persons.

Given that the 1st person received 1/8 of the estate,

the 2nd person received 1/5 of the estate,

the 3rd person received 1/5 of the estate,

and the 4th person received 1/10 of the estate.

Let the 5th person received the x part of the estate.

The sum of all the fractional parts of one estate equals to 1, so

$\frac 1 8+\frac 1 5+\frac 1 5+\frac 1 {10}+x=1$

$\Rightarrow \frac 5 8 +x =1$

$\Rightarrow x =1-\frac 5 8 =\frac 3 8.$

Hence, the last person received 3/8 of the estate.

8 0

4 years ago

11. What is the third term of the recursive sequence below? a1=-6 an=1/2an-1-n<br> Hurryy plzzz

AlexFokin [52]

Answer:

Step-by-step explanation:

$a_{1} = -6\\\\a_{n}=\frac{1}{2}a_{n-1} - n\\\\a_{2}=\frac{1}{2}a_{1}-2\\\\ = \frac{1}{2}*(-6)-2\\\\ = -3 - 2\\\\= -5\\\\a_{3}=\frac{1}{2}a_{2}-3\\\\= \frac{1}{2}*(-5)-3\\\\=\frac{-5}{2}-3\\\\= \frac{-5}{2}-\frac{3*2}{1*2}\\\\=\frac{-5}{2}-\frac{6}{2}\\\\=\frac{-11}{2}$