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3 years ago

Is 5 a perfect square

Mathematics

2 answers:

Yuki888 [10]3 years ago

6 0

5 would not be a perfect square

frutty [35]3 years ago

5 0

5 would not be a perfect square. Because no whole number to the second power is 5

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Solve this equation.

baherus [9]

Answer:

y=2

Step-by-step explanation:

(y+7)÷3=3y-3

y+7=9y-9

7+9=9y-y

16=8y

2=y

7 0

4 years ago

Read 2 more answers

Find the sample size necessary in order to be 95% confident when determining the true mean weight within 2 units (EC2). Assume t

bogdanovich [222]

Answer:

Step-by-step explanation:

Given:

Margin of error (E) = 2

Sample variance $(s^{2})$ = 44

Confidence level = 95%

The z- value at 95% confidence level is 1.96.

The sample using the provided information can be calculated as:

$n=(\frac{z(s)}{E})^{2} \\n=\frac{z^{2} s^{2} }{E^{2} } \\n=\frac{1.96^{2} (44) }{2^{2} }\\n= 42.52\\n=43$

Hence, the correct option is (c) 43.

8 0

3 years ago

Can someone pls solve this

vredina [299]

Answer:

G=23/16

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Which equation is graphed?

anygoal [31]

Answer: I think it is b

Explanation:

6 0

3 years ago

The area of the circle is 144π m2<br><br> What is the diameter of the circle?

Over [174]

Answer:

Step-by-step explanation:

Remember that

Area of Circle = $\pi r^2$

$\pi = pi \\r = radius$

They told us that for this circle, the area is $144\pi m^2$

If you put it back into the formula for area of a circle we get:

Area of Circle = $\pi r^2$

$144\pi = \pi r^2$

Divide both sides by $\pi$ .

144 = $r^2$

Now we want to solve for r (r = radius).

You need to square root each side

$\sqrt{144} = \sqrt{r^2}$

$12 = r$

So now we know the radius, $r = 12$ metres

Also remember that

Diameter = $2r$

So,

Diameter = 2 times 12 = 24 metres

5 0

3 years ago