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2 years ago

I would like to use Brainly for my math

Mathematics

1 answer:

zmey [24]2 years ago

8 0

Thats... what people do here.

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What is a frequency table? Give details.

Elden [556K]

Answer:

A table divided into cells by category with counts for each category in each cell. For example, let's say you were counting the number of cars and trucks that drove down a road each day over a 5-day week. Your categories would be vehicle and day. You could summarise this as a frequency table:

Step-by-step explanation:

6 0

3 years ago

I need this answer asap please helppppp

trasher [3.6K]

Answer:

S^2 = r^2 + t^2

Step-by-step explanation:

Also you can write it as:

S=sqrt( r^2 +t^2)

according to the choices you have

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2 years ago

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X + 4y = 13 x - y = 3 systems of equations I need help on a couple of these like ASAP

lara31 [8.8K]

A.)
Slope:-1/4
Y intercept: (0,13/4)
X intercepts:(13,0)
B.)
X intercepts:(3,0)
Y intercepts:(0,-3)

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3 years ago

What is the area of this triangle?

fredd [130]

Answer:

i think it's 16

Step-by-step explanation:

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3 years ago

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Given that f(x) = 19x2 + 152, solve the equation f(x) = 0

telo118 [61]

Option A

The solution is:

$x = \pm 2i \sqrt{2}$

Solution:

$f(x) = 19x^2+152$

We have to solve the equation f(x) = 0

Let f(x) = 0

$0=19x^2+152$

Solve the above equation

$19x^2 + 152 = 0$

$\mathrm{Subtract\:}152\mathrm{\:from\:both\:sides}\\\\19x^2+152-152=0-152\\\\Simplify\ the\ above\ equation\\\\19x^2 = -152\\\\\mathrm{Divide\:both\:sides\:by\:}19\\\\\frac{19x^2}{19} = \frac{-152}{19}\\\\x^2 = -8$

Take square root on both sides

$x = \pm \sqrt{-8}\\\\x = \pm \sqrt{-1}\sqrt{8}\\\\\mathrm{Apply\:imaginary\:number\:rule}:\quad \sqrt{-1}=i\\\\x = \pm i\sqrt{8}\\\\x = \pm i \sqrt{2 \times 2 \times 2}\\\\x = \pm 2i\sqrt{2}$

Thus the solution is found

5 0

3 years ago