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Tom [10]
3 years ago
15

All of the following are equivalent EXCEPT x < 2 x - 2 < 4 2x < -4 x - 2 < -4

Mathematics
1 answer:
Vlad [161]3 years ago
4 0

Answer:

solution

x<2,2x<-4,x-2<-4 are equvalent

but x-2<4 is not

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What is the equation of the line through (2,1) and (0, 5)
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Answer:

y=-2x+5

Step-by-step explanation:

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How to find domain and range of a function
lisabon 2012 [21]

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The domain is found depending on the information you're given. In a table, the domain is found by taking all the x values given and listing them least to greatest. Same with ordered pairs. In a graph, the domain is found by first seeing if there are any restrictions and then find the x values that work and have one output.

The range is found the same way, but with the y values.

Hope this helps!!

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2 years ago
If the perimeter of an equilateral triangle is 30cm, find its area. ​
lora16 [44]

Answer:

A ≈ 43.3 cm²

Step-by-step explanation:

the area (A) of an equilateral triangle is calculated as

A = \frac{s^2\sqrt{3} }{4} ( s is a side of the triangle )

given perimeter = 30 cm , then

s = 30 cm ÷ 3 = 10 cm

then

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7 0
2 years ago
The path followed by a roller coaster as it climbs up and descends down from a peak can be modeled by a quadratic function, wher
Romashka [77]

Answer:

y = -0.1x^2 + 250 ft

Step-by-step explanation:

Because this quadratic equation would have the curve-down form of:

y = -ax^2 + b

where a and b are positive coefficient.

If we let the peak (250 ft) of the curve be at x = 0. Then

y = -a0^2 + b = 250

b = 250

Also at the begins and ends, thats where y = 0, the 2 points are separated by 100 ft. So let the begin at -50 ft and the end at 50ft. We have

-a(\pm 50)^2 + 250 = 0

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a = 250/2500 = 0.1

Therefore, the model quadratic equation of our path would be

y = -0.1x^2 + 250 ft

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3 years ago
Which is true about the solution to the system of inequalities shown? y &lt; x – 1 y &lt; x – 3 All values that satisfy y &lt; x
Masteriza [31]
<span>solution of a system of linear equations</span>
7 0
3 years ago
Read 2 more answers
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