Ask question

Ask question

All categories

White raven [17]

3 years ago

15

How would you classify the number 121 ?

1 answer:

Maslowich3 years ago

5 0

Answer:

$\boxed{121\: is \: a \: perfect \: square}$

Step-by-step explanation:

$the \: \sqrt[3]{121} \: is \: not \: a \: perfect \: cube \\ but \\ the \: \sqrt{121} = 11 \to \: is \: a \: perfect \: square \\$

You might be interested in

Please help!!!!!!!!!

MArishka [77]

Answer:

Step-by-step explanation:

The point means that 15 pounds of beans cost 12 dollars.

7 0

3 years ago

Someone please help! find x round to the nearest tenth! trigonometry!

TEA [102]

Answer:

<h2>x = 745.5 ft</h2>

Step-by-step explanation:

Look at the picture.

Use sine:

$sine=\dfrac{opposite}{hypotenuse}$

We have a measure of the angle and length of the opposite:

$\alpha=28^o,\ opposite=350\ ft$

$\sin28^o\approx0.4695$

Substitute:

$\dfrac{350}{x}=0.4695$

$\dfrac{350}{x}=\dfrac{4695}{10000}$ <em>cross multiply</em>

$4695x=3500000$ <em>divide both sides by 4695</em>

$x=\dfrac{3500000}{4695}\to x\approx745.5$

5 0

3 years ago

In class, Matthew stated, "I think that a negative is like an opposite. That is why multiplying a negative times a negative equa

Black_prince [1.1K]

Two negatives being multiplied DOES equal a positive
In my response to is that is a correct term to answer. <span />

3 0

3 years ago

Suppose a production facility purchases a particular component part in large lots from a supplier. The production manager wants

musickatia [10]

Answer:

We need a sample size of at least 1161.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error for the interval is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

For this problem, we have that:

$\pi = 0.22$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

How large a sample should she take?

We need a sample size of at least n.

n is found when $M = 0.02$

So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.02 = 1.645\sqrt{\frac{0.22*0.78}{n}}$

$0.02\sqrt{n} = 1.645\sqrt{0.22*0.78}$

$\sqrt{n} = \frac{1.645\sqrt{0.22*0.78}}{0.02}$

$(\sqrt{n})^{2} = (\frac{1.645\sqrt{0.22*0.78}}{0.02})^{2}$

$n = 1160.88$

Rounding up

We need a sample size of at least 1161.

7 0

4 years ago

ANSWER ASAP!!!!!!!! I'LL GIVE YOU BRAINLIEST!!!!!!!!!! 10x-8=2x+6

zaharov [31]

Answer:

x= 1.75

Step-by-step explanation:

I uhm *whispers* used mat hway

4 0

3 years ago

Read 2 more answers