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2 years ago

A triangle has sides with lengths of 2 centimeters, 4 centimeters, and 5 centimeters. Is it a right triangle?

Mathematics

2 answers:

Akimi4 [234]2 years ago

7 0

Answer:

Step-by-step explanation:

Use Pythagorean to verify:

2² + 4² = 5²
4 + 16 = 25
20 = 25

As we see the equation is not true, so the answer is no

makvit [3.9K]2 years ago

3 0

Let's use Pythagorean theorem to verify

$\\ \sf\longmapsto H^2=P^2+B^2$

$\\ \sf\longmapsto 5^2=4^2+2^2$

$\\ \sf\longmapsto 25=16+4$

$\\ \sf\longmapsto 25\neq 20$

Not a right triangle

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Compare the two numbers using an inequality symbol square root of 25 and square root of 64

Gnoma [55]

The square root of 64 is greater than the square root of 25; (square root sign) 64 > (square root sign) 25

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3 years ago

If f(x)=2x^2+(1000/x), find the average rate of change of f(x) from x=a to x=a+h.

galina1969 [7]

Answer:

$\frac{\frac{1000}{x+h}-\frac{1000}{x}}{h}$ is your average rate of change,

Step-by-step explanation:

average rate of change is

$\frac{f(a+h)-f(a)}{a+h-a}$ , by slope formula

simplify this to get $\frac{f(a+h)-f(a)}{h}$ , which is the definition of the derivative as h goes to 0

$\lim_{h \to 0} \frac{f(a+h)-f(a)}{h}$

since you defined x=a, we can substitute a for x and vice versa to find our derivative.

$\lim_{h \to 0} \frac{(2x^2+\frac{1000}{x+h})-(2x^2+\frac{1000}{x})}{h}$

simplifying

$\lim_{h \to 0} \frac{\frac{1000}{x+h}-\frac{1000}{x}}{h}$ (your average rate of change)

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3 years ago

Which two-dimensional figure results from slicing the sphere with the blue plane?

alexgriva [62]

The answer is A parabola

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3 years ago

Anyone know what this means?

fgiga [73]

Answer:

It's an angle bisector and it was found using a compass

Step-by-step explanation:

First you use the compass to make a marking in the angle

Then you move the compass to the D and make another marking after that you move the compass to E (Make sure to use the same compass setting) and make a marking that intersects with the marking of D which creates F. Last you use a straight edge to make the angle bisector of ABC. (Sorry if you don't understand this it was difficult for me to explain)

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3 years ago

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Helen [10]

C. 28 is the answer
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Hope this helps!

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3 years ago