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2 years ago

What are the 2 next terms: 1/3,2/3,1,4/3

1 answer:

7 0

Answer: 5/3, 2

It’s going up by 1/3 so just add 1/3 to 4/3 for the next term.

1/3 + 4/3 = 5/3

Now add 1/3 to 5/3 for the best term

5/3 + 1/3 = 6/3 = 2

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Mark is online buying songs to download to his smart phone. He has a $20 gift card. He sees that there is a one time fee of $10

Rashid [163]

Answer:

20 - 10 = 10 - 1.99 = 8.00

Step-by-step explanation:

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7 0

2 years ago

Find the product: -1(15)

luda_lava [24]

Answer:

-15

Step-by-step explanation:

It might help to factor out the expression further. You can factor it as:

(1)(15)(-)

7 0

2 years ago

Use the information from the polling agency to determine the sample size needed to construct a 95% confidence interval with a ma

Ber [7]

Answer:

the sample size n= 771

sample proportion is p = 1/2

Step-by-step explanation:

Step1:-

marginal error formula is $\frac{2S.D}{\sqrt{n} }$

but if 'n' is sample size then $n = \frac{1}{(margin error)^{2} }$

Given margin error is 36% = 0.036

$n= \frac{1}{(0.036)^2}$

on simplification , we get n= 777 polling agencies

Step 2:-

$Margin of error = \frac{2\sqrt{p(1-p)} }{\sqrt{n} }$

substitute values , we get

$\frac{36}{100} = \frac{2\sqrt{p(1-p)} }{\sqrt{771} }$

after simplification, we get

$\sqrt{p(1-p)} = \frac{1}{2}$

squaring on both sides, we get

$p(1-p) = \frac{1}{4}$

multiply 'p' inside

$p-p^{2} =\frac{1}{4}$

cross multiplication '4' and simplify

$4p^{2} -4p +1 =0$ ........(1)

finding 'p' value

The equation (1) is of the form $(a-b)^{2} = a^{2} -2ab+b^{2}$

$(2p)^{2} -2(2p)(1)+1^{2} = (2p-1)^2$

$(2p-1)^2 =0$

$p=\frac{1}{2}$

conclusion:-

The sample size is 771

the sample proportion is p = $\frac{1}{2}$

4 0

2 years ago

Arithmetic_Sequences

tatuchka [14]

Answer:

Step-by-step explanation:

4 0

3 years ago

How can I solve 16,18,20, and 22?

juin [17]

Problem 16 Begin by setting corresponding positions equal to each other.
9 = x + 2y and 13 = 4x + 1
The second equation only has one variable so you should solve it first.
13 = 4x + 1
13 - 1 = 4x + 1 - 1
12 = 4x (divide both sides by 4)
3 = x
you can use this value to find y in the other equation
9 = 3 + 2y
9 - 3 = 3 - 3 + 2y
6 = 2y
3 = y

3 0

3 years ago