The points a b c and d lie on a straight line ab:bd = 1:4 are A line that extends to infinity on both sides and has no curves is called a straight line.AB:BC=3:4.
<h3>What do you call a straight line? </h3>
A line is simply an object in geometry denoted as an object with no width that extends on both sides. A straight line is just a line with no curves.
- AC=AB+BC=3+4=7; AC:CD=2:1, i.e. AC=2; because we get 2 different lengths for AC, we change the given ratio AC:CD to an equivalent one with AC=7 .
- As follows: AC:CD = 2 : 1 = 7 : 3.5 (multiply both sides by 3.5 ) Now we have AC:CD = 7 : 3.5 and AD = AC+CD= 7+3.5 = 10.5,, and the answer is: the ratio BC:AD = 4:10.5.
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Mobile phones transmit and receive signals using electromagnetic waves, that is, wireless signal are electromagnetic waves which can travel through a vacuum, they do not need a medium or matter.
<h3>What are electromagnetic waves?</h3>
They are generated by electrical and magnetic particles moving at the same time (oscillating).
<h3>Characteristics of electromagnetic waves</h3>
- Network waves are electromagnetic waves.
- A mobile phone has coverage when it receives electromagnetic waves from at least one base station.
- They do not necessarily require a material medium for their propagation.
Therefore, we can conclude that electromagnetic waves are those that do not need a material medium to propagate and include, among others, radio, television and telephone waves.
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Answer:
The formula to enter in E14 is as follows:
=DAYS(D14,$E$10)
Explanation:
Required
Formula to calculate the number of days between E10 and D14
The syntax to do this is:
=DAYS(end_date,start_date)
So, we have:
=DAYS(D14,E10)
The question requires a mix of relative and mixed references because cell E10 will be constant in calculating the difference for dates in other cells.
In other words, the initial date is constant for all
So, the update formula is:
=DAYS(D14,$E$10)
Notice the $ between in E10; this represents mixed referencing
When dragged to E15 till E68, the formulas in the respective cells will be:
=DAYS(D15,$E$10) .............................. =DAYS(D68,$E$10)
A- White. shows all wavelengths of light.
