All categories

3 years ago

Can y'all help pleases like I need help

Mathematics

1 answer:

garik1379 [7]3 years ago

5 0

<span>1223.65 cm^2

You multiply base (20) X height (20) for the squares. and since you can see 5 squares, it's 20 x 20 x 5 = 2000

then you do 20 x 20 + 20 x the square root of [(20/2)^2 +(18^2) + (20^2)] TIMES the square root of [(20/2)^2 + 18^2)] so you get about 1223.65cm^2</span>

You might be interested in

If one root is the square of the other in the equation 8+mx+27x²=0,find the value of m

aleksklad [387]

Answer:

The value of $m$ is -30.

Step-by-step explanation:

Let $27\cdot x^{2}+m\cdot x +8 = 0$ , we notice that expression is a second order polynomials. We can rearrange the polynomial and use factorization to calculate all roots:

$x^{2}+\frac{m}{27}\cdot x + \frac{8}{27} = 0$ (1)

$-x^{2}-x = \frac{m}{27}$ (2)

$x^{3} = \frac{8}{27}$ (3)

From (3) we find the least root:

$x = \sqrt [3]{\frac{8}{27}}$

$x = \frac{2}{3}$

By (2) we have the value of $m$ :

$m = -27\cdot (x^{2}+x)$

$m = -30$

3 0

2 years ago

A statistic is said to be unbiased if

xxMikexx [17]

Answer:

A statistic is said to be unbiased if the mean of its sampling distribution is equal to the true value of the parameter being estimated.

Step-by-step explanation:

A parameter is a number that describes the population.

A statistic is a number that describes a sample.

A statistic used to estimate a parameter is unbiased if the mean of its sampling distribution is exactly equal to the true value of the parameter being estimated. For example, the mean of a sample is an unbiased estimate of the mean of the population from which the sample was drawn.

A statistic is biased if its expected value is not equal to the parameter.

8 0

2 years ago

The sales tax rate is 10%. If Kyle buys a digital camera priced at $579.25, what will be the total cost including tax? Round you

yanalaym [24]

Answer:

638.75

Step-by-step explanation:

Well you can actualy do this on a calculator If put in proporly use the 2nd button and push (sin) to get a tax percentage.

3 0

2 years ago

Read 2 more answers

After getting a job at the ice cream parlor, Mitzi put $20 in

RideAnS [48]

Answer: The answer is C

Step-by-step explanation:

7 0

2 years ago

The triangle has a base of 120 feet and a height of 115 feet. What will the area of the triangle be?

Serggg [28]

13,800, sorry, i cant explain it well, but that the answer

8 0

2 years ago