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Vera_Pavlovna [14]
3 years ago
8

1c) What is 25% of 40? 8.5

Mathematics
1 answer:
grin007 [14]3 years ago
8 0

<em>2</em><em>5</em><em>%</em><em> </em><em>of</em><em> </em><em>4</em><em>0</em>

<em>=</em><em>2</em><em>5</em><em>/</em><em>1</em><em>0</em><em>0</em><em>×</em><em>4</em><em>0</em>

=<em>0</em><em>.</em><em>2</em><em>5</em><em>×</em><em>4</em><em>0</em>

<em>=</em><em>1</em><em>0</em><em> </em><em>answer</em><em>.</em>

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The diameter of a human red blood cell is 0.000009 m The diameter of a cold virus is 0.00000003 m. Approximately how many times
Lera25 [3.4K]

Answer:

Red Cell is 300 times larger than the virus

Step-by-step explanation:

Size in scientific Notation

  • Red Cell = 9 * 10^-6
  • Virus = 9 * 10^-8

Procedure.

  • Count the number of zeros in the decimal
  • Red Cell = 5 ; virus = 7
  • And one more to each
  • Red Cell = 6; virus = 7
  • change the numbers to minus
  • Red Cell = -6 ; virus = - 7
  • The last row is the powers as shown above.

Answer

9*10^-6/3 * 10^-8

3*10^(-6 - - 8)

3*10^(-  6 + 8)

3^10^2 or 300 times larger

4 0
3 years ago
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If g(x) is the inverse of f(x)=4x+12 and f(x)=, what is g(x)
Nitella [24]
Hello,
f(x)=y=4x+12

x=4y+12
==>4y=x-12
==>y=x/12- 3

g(x)=x/12 -3


6 0
3 years ago
Read 2 more answers
Calculate the perimeter of a regular pentagon which has a side of 9cm
Alisiya [41]
The answer is 45. there are 5 sides. each one is 9cm. 9*5= 45. 
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8 0
3 years ago
Please answer this correctly without making mistakes
Makovka662 [10]
12%

The fraction is 12/100, which is the same as 12%

Hope this helps!
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Select the correct answer from each drop-down menu.Complete the following proof.Given: WXYZ is a parallelogram with diagonals XZ
ohaa [14]

GIVEN:

We are given a parallelogram WXYZ with diagonals WY and XZ.

Required;

Prove that XZ bisects WY.

Explanation;

From the diagram provided, we can draw the following conclusion;

\begin{gathered} \angle WXY\cong\angle YZW \\  \\ \angle WXZ\cong\angle YZX \\  \\ Alternate\text{ }interior\text{ }angles \end{gathered}

Also, we have;

\begin{gathered} \Delta WZV\cong\Delta YXV \\  \\ SAS\text{ }congruency\text{ }criteria \end{gathered}

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