A microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus has a diameter of of 2 x 10`-7 meter. how large will the diameter of the virus appear when it is viewed under the microscope.

Answers

Answer 1

Answer: $2\cdot10^(-7)\ meter\ \rightarrow\ \ the\ actual\ size\n\nscale=4\cdot10^2\n\nthe\ size\ under\ the \ microscope\ \n\n=4\cdot10^2\cdot2\cdot10^(-7)\ meter=8\cdot10^(-5)\ meter\n\nAns.\ the\ size\ under\ the \ microscope\ is\ 8\cdot10^(-5)\ meter.$

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Write the equation in function form then graph the equation

3x-y=5

Answers

$3x-y=5 \n \n -y=-3x+5 \ \ /*(-1)\n \ny=3x-5 \n \n the \ graph\ of \ a \ linear \ equation \ is \ a \ straight \ line$

3x-y=5

-3x -3x

-y = -3x+5

*divide -1

y= 3x-5

Help help help help help help help

Answers

Answer: 7x-56

Step-by-step explanation:

Multiply (x-8) by 7

If You Have To Pay Someone $279 In Denominations Of $20 Or Less, What Is The Least Number Of Bills You Could Use?

Answers

You can use 27 $10 bills which gets your at a total of $270 then you can use 1 $5 bill so now you're at $275 then you can use 4 $1 bills that gets you at your total of $279. The least number of bills you can use is 32.

Is 7 x (6 x t) equivalent to (7 x 6) x t

Answers

Yes the associative property of multiplication allows this to be true

In other words, you can multiply in different groupings and still get the same result

Example: (2*3)*5 = 6*5 = 30 or 2*(3*5) = 2*15 = 30

7 x (6 x t)= 7 x 6t= 42t
(7 x 6) x t = 42 x t= 42t
yes they're equivalent

-104=8x what is x ????

Answers

$-104=8x \n \n - (104)/(8) = x \ / \ divide \ each \ side \ by \ 8 \n \n -13 = x \ / \ simplify \n \n x = -13 \ / \ switch \ solution \ around \n \n$

The final result is, x = -13.

-104 = 8x. The x is being multiplied by 8, so to undo the multiplication divide both sides of the equal sign by 8. 8x/8 = x and -104/8 = -13 so x = -13.

Write and solve a system of equations that represents each situation. Interpret the solution. Neil has a total of twelve $5 and $10 bills in his wallet. He has 5 times as many $10 bills as $5 dollar bills. How many of each does he have?

Answers

x - $5 bills
y - $10 bills

x + y = 12
y = 5x

x + (5x) = 12
6x = 12
x = 2

y = 5(2)
y = 10

10 $10 bills and 2 $5 bills

Let $5 bills be denoted by x and $10 bills be denoted by y.

$x + y = 12 \n y = 5x \n \n x + (5x) = 12 \n \n 6x = 12 \n \n => x = 2 \n \n y = 5x \n \n or, y = 5(2) \n \n => y = 10$

Thus, there are 2 5$ bills and 10 10$ bills.

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