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There are 300 passengers on a plane, 7/20 of them are men, 30% are women, the rest are children. Work out the number of children.

300 x (7/20) = 300/20 x 7 = 15 x 7 = 105 = number of men on the plane.

300 x 0.3 = 90 (Or 300/10 x 3) = number of women on the plane.

105 + 90 = number of adults on the plane = 195.

3...

HT
Answered by Hannah T. Maths tutor
4734 Views

Put the next fractions in an increasingly order: 1/2, 3/4, 2/3, 5/6

To solve the problem, we will have to find the maximum common denominator (mcd). We decompose the denominator of every fraction obtaining, 2=2; 3=3; 4=22; 6=2x3. Now, we take the common factors...

LA
Answered by Lucia A. Maths tutor
6822 Views

Find the derivative of the next function using the implicit method: x^2 sin(x+y)-5 y e^x​​​​​​​=0

Using the implicit form derivative rule: y'=-Fx' / Fy' :

y'=-(2 x sin(x+y)+xcos(x+y)-5 y ex) / (xcos(x+y)-5 ex)

LA
Answered by Lucia A. Maths tutor
1541 Views

When performing differentiation in core 3, in what circumstances do I apply the chain, product and quotient rule?

You must apply the chain rule whenever you see a function contained within another function. For example, if you were to differentiate (sin x) you would apply the chain rule as the sin functi...

JS
Answered by James S. Maths tutor
2864 Views

2x + 4 > 16

Step 1- Get all the numbers on one side of the inequality sign and all the letters on the other side. Remember when a number is moved to the other side of an inequality, the sign infront changes from eith...

GW
Answered by Gemma W. Maths tutor
2624 Views

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