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LUCKY_DIMON [66]
3 years ago
10

I need help ,,, and tahnks☺

Mathematics
2 answers:
Mashcka [7]3 years ago
6 0
Pythagora: 20^2=(4x)^2+(3x^2)
400=16x^2+9x^2
x^2=400/25
x^2=16
x=4
Lubov Fominskaja [6]3 years ago
4 0
We can use the Pythagoras theorem:

leg 1² + leg 2² = hypotenuse²
(4x)² + (3x)² = 20²
16x² + 9x² = 400
combine like terms
25x² = 400

divide by 25 on both sides to isolate x²
\frac{25x^2}{25} =  \frac{400}{25}
25 and 25 cancels out

x² = 16

Take square root on either sides tot find the value
\sqrt{x^2} = \sqrt{16}
x = +/- 4

Cancels -4 because lengths cannot be in negative.

x = 4

check:
(4 × 4)² + (3 × 4)² = 20²
(16)² + (12)² = 400
256 + 144 = 400
400 = 400
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in 2012, the general social survey included a question that asked participants how many hours they worked a week. do males work
Agata [3.3K]

Using sampling concepts, it is found that this is an example of independent samples.

  • For dependent samples, there is a paired measurement for one set of items.
  • For independent samples, separate measurements are made on two different sets, that is, the value on one sample reveal no information about the values on the other sample.

In this problem, there are two samples, the sample composed of male workers and the one composed of female workers, and separate measurements are taken, hence, it is an independent sample.

A similar problem is given at brainly.com/question/23106151

4 0
2 years ago
Round to the nearest hundredth<br> 1.359.377
pashok25 [27]

Answer:

1.360.000

Step-by-step explanation:

I hope this is correct, but you take the number behind the nearest hundredth. If it's five and up you go up a number and if it's 4 or lower you go down

7 0
3 years ago
A person walked x feet and half that length again
hjlf

Answer:

3/2x

Step-by-step explanation:

x feet and half x = x+1/2x or 3/2x

Hope this helps plz hit the crown :D

4 0
2 years ago
Can someone help me understand the concept of finding the domain and range on a graph. I don’t understand it! Someone help me
juin [17]

Answer:

The Domain is where the line on your graph crosses the X axis.

The Range us where the line on your graph crosses the Y axis

And a arrow means it goes Into infinity

Step-by-step explanation:

Say you Have a line, it crosses the X axis at -3, your Domain would be -3!

Now say this line crosses the Y axis at -6, Your Range would be -6!

And now say if instead of the line ending at a dot after crossing -6 It has a arrow, that means you have infinity, Making your range instead of -6 it's be infinity! (If the arrow points up it's positive infinity, If the arrow points down it's negative infinity)

So for the first 2 numbers your answer would be [-3,-6] and in you have infinity itd be [-3, infinity) parenthesis isn't a error btw if you still don't get it I can just reply with a sheet I have on it

5 0
3 years ago
Please put these from greatest to least.
ziro4ka [17]

Answer:

Answer is below

Step-by-step explanation:

Idk if it 430 or 436 but if it is 436.051 that goes first

then 435.786

435.100

if it is 430.051 then it is in the order of

435.781

435.100

430.051

4 0
3 years ago
Read 2 more answers
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