<img src="https://tex.z-dn.net/?f=4%28x%2By%29%5E%7B2%7D%20-20%28x%2By%29%5E%7B2%7D%20%2B25z%5E%7B2%7D" id="TexFormula1" title="

All categories

max2010maxim [7]

2 years ago

4(x+y)^{2} -20(x+y)^{2} +25z^{2}" alt="4(x+y)^{2} -20(x+y)^{2} +25z^{2}" align="absmiddle" class="latex-formula">

Mathematics

2 answers:

Iteru [2.4K]2 years ago

8 0

Answer:

Step-by-step explanation:

please make sure you indicate whether to factorize , simplify, fatorize by grouping , evaluate, or finding the derivative

vivado [14]2 years ago

7 0

Answer:

I am pretty sure that it is 625.

You might be interested in

________________hundredths = 0.80

bulgar [2K]

The answer is eighty.

6 0

3 years ago

A recipe requires 6.5 teaspoons of sugar to make a pie. Which equation shows the number of teaspoons of sugar, y, needed to make

kupik [55]

The equation to your answer is x = 6.5y

5 0

3 years ago

PLEASE HELP ME ASAP 20 POINTS PROMISE.

kotykmax [81]

Answer:

250 miles

Step-by-step explanation:

50+.4x=.6x

50=.2x

x=250 miles

5 0

3 years ago

A random sample of 130 students is chosen from a population of 4,500 students. The mean IQ in the sample is 120, with a standard

barxatty [35]

Answer:

$120-2.614\frac{5}{\sqrt{130}}=118.85$

$120+2.614\frac{5}{\sqrt{130}}=121.15$

Step-by-step explanation:

Information given

$\bar X= 120$ represent the sample mean

$\mu$ population mean (variable of interest)

s=5 represent the sample standard deviation

n=130 represent the sample size

For this case we can't set a margin of error just with a % since they not specify 1.13% respect to something for this case we can omit this value

Confidence interval

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

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

The degrees of freedom are given by:

$df=n-1=130-1=129$

The Confidence level is 0.99 or 99%, the significance would be $\alpha=0.01$ and $\alpha/2 =0.005$ , and the critical value would be $t_{\alpha/2}=2.614$

And replacing we got:

$120-2.614\frac{5}{\sqrt{130}}=118.85$

$120+2.614\frac{5}{\sqrt{130}}=121.15$

3 0

3 years ago

Please help will give Brianliest!!!

marshall27 [118]

Answer: y=2(x-3)-5

I hope this is good enough:

8 0

3 years ago