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Sauron [17]
4 years ago
10

Which expression can be written as k square root 3 where k is an integer

Mathematics
1 answer:
Damm [24]4 years ago
8 0

Answer:

A simple expression is \sqrt{48} = 4\sqrt{3}

Step-by-step explanation:

Surds are irrational numbers expressed with respect to a square root. There are some basic rules required when dealing with surd.

Integers are numbers that do not have a decimal or fractional part i.e whole numbers. So, a simple expression that can be written as k square root 3 where k is an integer is \sqrt{48}.

So that,

                            \sqrt{48} = \sqrt{16 * 3}

                                   = 4\sqrt{3}

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Se lanza un objeto desde una plataforma.
jasenka [17]

Answer:

6 seconds

Step-by-step explanation:

<u><em>The question in English is</em></u>

An object is thrown from a platform.

Its height (in meters), x seconds after launch, is modeled by:

h(x)=-5x^2+20x+60

How many seconds after the launch does the object reach the ground?

Let

x ----> the time in seconds

h(x) ---> the height of the object

we have

h(x)=-5x^2+20x+60

we know that

When the object hit the ground the height is equal to zero

so

For h(x)=0

we have

-5x^2+20x+60=60

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

-5x^2+20x+60=60

so

a=-5\\b=20\\c=60

substitute in the formula

x=\frac{-20\pm\sqrt{20^{2}-4(-5)(60)}} {2(-5)}

x=\frac{-20\pm\sqrt{1,600}} {-10}

x=\frac{-20\pm40} {-10}

x=\frac{-20+40} {-10}=-2

x=\frac{-20-40} {-10}=6

The solution is x=6 sec

The he object reach the ground at x=6 seconds

7 0
3 years ago
Evaluate the radical. 125−−−√3
VikaD [51]

Answer:

Answer should be 5

Step-by-step explanation:

3 0
3 years ago
Can someone please help me
Anettt [7]

Answer:

6, 12, 21, 10, then 4

Step-by-step explanation:

This is more difficult to answer than you would think, you can't actually see the picture when typing the answer

5 0
3 years ago
Read 2 more answers
How do you solve the equation 2x - 125 = 400
dedylja [7]
You add -125 by its opposite which is 125 so 2x(-125+125)=400+125
2x=525
You then divide both sides by 2 and you get
X=262.5
6 0
3 years ago
Read 2 more answers
What is 43 hundredths as a decimal
baherus [9]

Answer:

.43

Step-by-step explanation: you would right and move the decimal twice to get .43 hundreths


3 0
3 years ago
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