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4 years ago

What is equal to 2/3

1 answer:

4 0

There are infinitely many values which are equal to 2/3. You can multiply it by any real fraction which is equal to one, ie 2/2, 3/3, π/π, √2/√2 for examples which would give you:

4/6, 6/9, 2π/3π, 2√2/(3√2), √(8/18)

You might be interested in

How many five digit codes can be formed using digits 0 through 9?

ella [17]

Answer:

100,000 combinations because if you have 5 digits, your equation is 10^5 which equals 100,000,

7 0

3 years ago

Plz answer both question 2 and 3 and i will give you brainliest

Vladimir [108]

Answer:

Step-by-step explanation:

Q. 2

- 4x + 2y = 16

y = 2x + 8

<em>( - 3, 2 )</em>

Q. 3

y = 2x + 3

<em>Not proportional</em>

4 0

3 years ago

A manufacturer of pharmaceutical products analyzes specimens from each batch of a product to verify the concentration of the act

Alisiya [41]

Answer:

$0.82-2.977\frac{0.048}{\sqrt{15}}=0.783$

$0.82+2.977\frac{0.048}{\sqrt{15}}=0.857$

So on this case the 99% confidence interval would be given by (0.783;0.857)

So then we can conclude that at 99% of confidence the true mean is between (0.783;0.857) and the specification is satisfied since the value of 0.8 is on the confidence interval

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X= 0.82$ represent the sample mean

$\mu$ population mean (variable of interest)

s=0.048 represent the sample standard deviation

n=15 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=15-1=14$

Since the Confidence is 0.99 or 99%, the value of $\alpha=0.01$ and $\alpha/2 =0.005$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,14)".And we see that $t_{\alpha/2}=2.977$

Now we have everything in order to replace into formula (1):

$0.82-2.977\frac{0.048}{\sqrt{15}}=0.783$

$0.82+2.977\frac{0.048}{\sqrt{15}}=0.857$

So on this case the 99% confidence interval would be given by (0.783;0.857)

So then we can conclude that at 99% of confidence the true mean is between (0.783;0.857) and the specification is satisfied since the value of 0.8 is on the confidence interval

5 0

3 years ago

3w + 6(w – 4) = 156, what does w equal?

RSB [31]

<h2>3w + 6 (w - 4) = 156</h2><h2 /><h2>3w + 6w - 24 = 156</h2><h2 /><h2>9w - 24 = 156</h2><h2 /><h2>9w = 180</h2><h2>÷9 ÷9 ← divide by 9 on both sides</h2><h2 /><h2> w = 20</h2>

3 0

3 years ago

How does simplifying a square root expression differ from simplifying a cube root expression?

Serga [27]

The square root contains two same numbers and the cubic root contains three same numbers.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The square root contains two same numbers and the cubic root contains three same numbers.

For an example:-

√9 = $\sqrt{3\times 3}$ = 3 as we can see in the example the value of the square root of 9 is 3 it consists of two threes in the roots.

∛27 = $\sqrt[3]{3\times 3\times 3}$ = 3 here we have found that 27 contains 3 times 3 so the cube root of 27 will be equal to 3.

Therefore square root contains two same numbers and the cubic root contains three same numbers.

To know more about Expression follow

brainly.com/question/723406

#SPJ1

5 0

2 years ago