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lbvjy [14]
3 years ago
10

What is the age of the oldest rock that has been found and dated?

Biology
2 answers:
inna [77]3 years ago
8 0
The answer is actually 4.4 billion years, but i guess you can estimate to 4.5
Oksanka [162]3 years ago
4 0
The answer is D
,....,.,.,.
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PLZ HELP!!!!
bija089 [108]

Answer and Explantion

Collect data-This should be the first step in coming up with a design of an instrument to measure a certain property. The data should comprise of the air temperatures, the wind speed values and recorded peak times for the ocean currents.

Build a prototype-This is sample equipment built from the data obtained to be used as a test instrument in predicting the catastrophic weather .The prototype is a mini design of the actual design.

Evaluate the result of their system-The results obtained from the prototype can be used for evaluation to determine the working of the designed devise. The results produced should show a connection that can be used to predict the weather according the values of temperature, wind speed and ocean current values.

Modify their design-After analyzing the results according to the parameters set for the design, the prototype can be improved to obtain a final design which will indeed produce the required results.


6 0
3 years ago
1.solve for p
Mnenie [13.5K]
<h3>1. <u>Answer;</u></h3>

<em>p =-3/2p</em>

<h3><u>Solution;</u></h3>

To solve for P  in the equation;

= 3(p + q ) = p

We open the brackets;

= 3p + 3q = p

Then, we combine the like terms together, we get;

 <em>  3p - p = -3q</em>

<em> Therefore; 2p = -3q</em>

<em>   hence;  p = -3/2q. </em>


<h3>2. <u>Answers</u>;</h3>

<em>b = 19/2</em>

<h3><u>Solution;</u></h3>

To solve for b when the value of a = 3

4a = 2b - 7

we substitute 3 with a in the equation

<em>( 4 × 3 ) = 2b -7</em>

<em>12 = 2b -7</em>

<em>Then, make b the subject</em>

<em>19 = 2b</em>

<em>b = 19/2</em>


<h3>3. <u>Answer;</u></h3>

<em>r =d/t</em>

<h3><u><em>Solution;</em></u></h3>

To solve for r 

d= rt.

In order to get r, we divide both sides by t

<em>d/t = rt/t</em>

<em>r =  d/t</em>


<h3>4. <u>Answer;</u></h3>

<em>Width = 30 units</em>

<h3><u>Solution;</u></h3>

The width of a rectangle with a given perimeter of 90 and length is 15.

The perimeter of a rectangle is given by;

Perimeter= 2(Length + Width)

Thus;<em> Perimeter = 90 , length=15 </em>

<em> 90 = 2 (W + 15)</em>

<em>Dividing both sides by 2,</em>

<em>45 = w + 15 </em>

<em>Subtracting from both sides;</em>

<em>W = 45 -15 </em>

<em>W = 30 </em>

Therefore,<em><u> the width of the rectangle is 30 units</u></em>

5 0
3 years ago
Read 2 more answers
What is an insoluble component of plasma that forms a meshwork of strands and is considered the structural basis of clot formati
almond37 [142]

Fibrin is an insoluble component of plasma that forms a meshwork of strands and is considered the structural basis of clot formation.

<h3>What is clot formation?</h3>
  • Blood turns from a liquid to a gel during coagulation, which results in the formation of blood clots.
  • Possible outcomes include haemostasis, which stops blood loss from a broken vessel, followed by repair.
  • The activation, adhesion, and aggregation of platelets, as well as the deposition and maturation of fibrin, are all components of the coagulation process.
<h3>What is fibrin?</h3>
  • A fibrous, non-globular protein called fibrin is necessary for blood to clot.
  • It is created when fibrinogen undergoes polymerization due to the protease thrombin.
  • A haemostatic plug or clot is formed over a wound site by platelets and polymerized fibrin.

To learn more about fibrin visit:

brainly.com/question/3105041

#SPJ4

6 0
1 year ago
Tectonic plates can affect __________________ environmental changes, which might be a cause for species extinction
laila [671]

Answer:

I believe it is long term.

Explanation:

did it in edge 2020

3 0
3 years ago
Does a vaccine work on someone who is already sick? Why?
Mariana [72]
No, because the immune system is already battling with the virus or disease
4 0
3 years ago
Read 2 more answers
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