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3 years ago

Help me please I don't get it

Mathematics

1 answer:

QveST [7]3 years ago

3 0

1 20

If you know the formula use it for every single one

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Jemina has 4 dogs, 8 cats and 12 fish as pets at her house.

eduard

Answer:

8:16

Step-by-step explanation:

6 0

2 years ago

What is the next term of AP : √2, √8, √18, .......?

solmaris [256]

Answer:

$\sqrt {32}$

Step-by-step explanation:

Next term of the given AP can be obtained by adding common difference (d) in the last term $\sqrt {18}$

$d = \sqrt{18} - \sqrt{8} = 3 \sqrt{2} - 2 \sqrt{2} = \sqrt{2} \\ next \: term = \sqrt{18} + \sqrt{2} \\ = 3 \sqrt{2} + \sqrt{2} \\ = 4 \sqrt{2} \\ = \sqrt{ {4}^{2} \times 2 } \\ = \sqrt{16 \times 2} \\ \huge \red{ \boxed{next \: term = \sqrt{32} }}$

8 0

3 years ago

You want to create a 99% confidence interval with a margin of error of .5. Assuming the population standard deviation is equal t

miss Akunina [59]

Answer:

Sample size minimum is 60

Step-by-step explanation:

given that you want to create a 99% confidence interval with a margin of error of .5.

The population standard deviation is equal to 1.5

i.e. $\sigma = 0.5$

Confidence level = 99%

Since population std deviation is known, we can use Z critical value for finding margin of error

Z critical value for 99% = 2.58

Margin of error = $2.58*\frac{1.5}{\sqrt{n} }$

Equate this to 0.5 and solve for n

$2.58*\frac{1.5}{\sqrt{n} }=0.5\\\sqrt{n} =7.74\\n =59.90\\n=60$

8 0

3 years ago

Find the zeros of the polynomial function and state the multiplicity of each.

Oksi-84 [34.3K]

Answer:

a) 8, multiplicity 2; 8, multiplicity 3

Step-by-step explanation:

Remember that a is a zero of the polynomial f(x) if f(a)=0 and has multiplicity n if the termn (x-a) is n times in the factorization of f(x).

We have that

$f(x)=3(x + 8)^2(x - 8)^3$

Observe that

1. $f(-8)=3(-8 + 8)^2(-8 - 8)^3=3*0*(-16)^3=0$

and (x+8) appear two times in the factorization of f(x). Then -8 is a zero of f(x) with multiplicity 2.

2. $f(8)=3(8 + 8)^2(8 - 8)^3=3*16^2*0^3=0$

and and (x - 8) appear three times in the factorization of f(x). Then 8 is a zero of f(x) with multiplicity 3.

Since f(x) has degree 5 and the sum of the multiplicities is 5 then f(x) hasn't more zeros.

7 0

3 years ago

Show that the equation x(3) + 4x = 1 has a solution between x = 0 and x = 1

denis-greek [22]

Answer:

x=0.24626...

Step-by-step explanation:

Hello. I am sure there is a more simple and ingenious way of answering this. However i tell you what i know still, hoping it helps you in your research.

3 0

2 years ago