Help please! and explain

Mathematics

1 answer:

Mashutka [201]3 years ago

6 0

A square has four equal sides to find he area of a square multiply one side by the other. If the square is 2by2by2by2 multiply 2x2 to get the area. In this case you already have the area. The area of a square can be defined as x^2 x being the length of a side = the area x^2=A substitute the value of the are x^2=37 to simplify this expression you have to cancel out the x^2 to x. Do this by using the square root. Square root of x squared is x remember you have to do this on both sides of the equation so the square root of 37 is something like 6.081937474728774738 or something and you have to round to the nearest tenth of an inch so.. The length of a side would be approximately 6.1 inches

You might be interested in

30 minutes to 90 minutes as a fraction in lowest terms

Svetllana [295]

<h2>Answer: 1/3</h2>

Step-by-step explanation: 30:90 = 10:30 =1:3 = 1/3

6 0

3 years ago

The royal fruit company produces two types of fruit drinks the first type is 70% pure fruit juice and the second type is 95% pur

Ipatiy [6.2K]

This is a typical mixture problem where using a table is the best thing.
pints juice % juice = total % juice
juice A x .70 = .70x
juice B 60-x .95 = .95(60-x)
total 60 .75 = 60(.75)

The last row gives you a total that you need to use, so do that multiplication to get 45. You now to need to add the last columns together for rows 1 and 2 and set them equal to 45: .7x +.95(60-x) = 45. When you do that math, you'll get that x = 48. This means that you need 48 pints of juice A and 60-48 pints of juice B, which is 12 pints.

6 0

3 years ago

Ten samples of coal from a northern appalachian source had an average mercury content of 0.242 ppm with a standard deviation of

Dovator [93]

The confidence interval is from 0.2191 to 0.2649, given by

$0.242\pm0.0229$ .

The z-score we need is found by first subtracting the confidence level from 1:
1 - 0.95 = 0.05

Divide that by 2:
0.05/2 = 0.025

Subtract that from 1:
1 - 0.025 = 0.975

Look this up in the middle of a z-table (http://www.z-table.com) and we see that the z-score is 1.96.

Now our confidence interval is given by
$\overline{x} \pm z\times \frac{\sigma}{\sqrt{n}}
\\
\\0.242\pm 1.96 \times (\frac{0.037}{\sqrt{10}})
\\
\\0.242 \pm .0229
\\
\\0.242-0.0229=0.2191
\\
\\0.242+0.0229 = 0.2649$

5 0

3 years ago

Can someone help me will give brainlist

Levart [38]

Answer:

Step-by-step explanation:

If we roll a multiple of 5 we will get one of the following:

5, 10, 15 , 20.

None of these is a perfect square so they are mutually exlusive,

6 0

2 years ago

Factors of 9 simple question

dolphi86 [110]

the factors are 1, 3, 9 i hope it helps :)

Step-by-step explanation:

bc i saidsoooo:)

6 0

3 years ago