2 years ago

Write the following as an exponential expression

Mathematics

1 answer:

Taya2010 [7]2 years ago

3 0

Answer:

Step-by-step explanation:

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What is 20% of 55?<br> I need help PLEASE!

Assoli18 [71]

20% of 55 is 11

Convert your percentage into a decimal:
$\frac{20}{100} = 0.2$

Multiply your decimal by 55:
$0.2 \times 55 = 11$

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3 years ago

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Lilyworks for a florist. She worked 20hours last week and earned $200.00. At that rate, how much will she earn if she works for

aniked [119]

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Step-by-step explanation:

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parking garage has 5 floors. If 117 cars can be parked on each floor, how many total cars can park in the garage? Drag numbers t

mr Goodwill [35]

Answer:

585 cars

Step-by-step explanation:

Given

$Floors = 5$

$Cars = 117$ per floor

Required

Determine the total number of cars

This is calculated by multiplying number of cars per floor by number of floors.

$Total = Floors*Cars$

$Total = 5 * 117$

$Total = 585$

<em>Hence, there are 585 cars in total</em>

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3 years ago

Which equation does the graph below represent <br> !!!NEED HELP ASAP!!!

ella [17]

Answer:

im pretty sure its -4

Step-by-step explanation:

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2 years ago

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Solve the equation in the complex number system. x^2-12x+40=0

mylen [45]

solving the equation $x^2-12x+40=0$ we get $x=6+2i\,\,and\,\,x=6-2i$

Step-by-step explanation:

Solve the equation:

$x^2-12x+40=0$

We can solve using quadratic Formula:

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

a= 1, b = -12, c = 40

Putting values:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\x=\frac{-(-12)\pm\sqrt{(-12)^2-4(1)(40)}}{2(1)}\\x=\frac{12\pm\sqrt{144-160}}{2}\\x=\frac{12\pm\sqrt{-16}}{2}\\We\,\,know\,\,\sqrt{-1}=i\\ x=\frac{12\pm4i}{2}\\ x=\frac{12+4i}{2}\,\,and\,\, x=\frac{12-4i}{2}\\ x=\frac{4(3+i)}{2}\,\,and\,\, x=\frac{4(3-i)}{2}\\x=2(3+i)\,\,and\,\,x=2(3-i)\\x=6+2i\,\,and\,\,x=6-2i$

So, solving the equation $x^2-12x+40=0$ we get $x=6+2i\,\,and\,\,x=6-2i$

Keywords: Solving quadratic equation

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3 years ago