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0.15^2 x (1-0.15)^3 to 2 s.f

BIDMASFirst must donwhat is inside the brackets1-0.15 = 0.85Next must do the indices 0.85^3= 0.6141250.15^2 =0.0225Then multiply0.0225 x 0.614125 = 0.01381781shorten to 2 s.f0.014

FM
Answered by Francesca M. Maths tutor
2465 Views

Why is the bond angle in an amide ion smaller than the bond angle in a molecule of ammonia?

The nitrogen atom in both NH3 and NH2- has 8 outer shell electrons. In NH3, 3 pairs of these electrons are used in covalent bonding to hydrogen atoms and the re...

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Answered by Anna G. Chemistry tutor
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The population of a town in 2014 was 80058. This was a 65% increase on its population in 1994. What was the population in 1994?

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Answered by Clare M. Maths tutor
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How does Priestley present the character of Sheila in 'An Inspector Calls'?

Sheila Birling is arguably one of the strongest and most complex characters in 'An Inspector Calls', due to her depth of feeling, and the change that her character undergoes throughout the play.
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AM
87250 Views

The equation of Line 1 is y= 3x-2, and the equation of Line 2 is 5= 9x- 3y. Are the two lines parallel?

The equation of a line is given by the formula y= mx + c. Here, 'm' is the gradient of the line, and 'c' is the y intercept: where the line crosses the y axis. If two lines are parallel, then they must ha...

EM
Answered by Emily M. Maths tutor
3992 Views

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