Top answers

The formula to convert from degrees Fahrenheit to degrees Celsius is C=(F-32)*(5/9). If it is 32 degrees Celsius, what is the temperature in Fahrenheit?

This question involves rearranging the equation to make F, the temperature in Fahrenheit, the subject of the formula. We'll start by writing out the original formula, and then we will move the elements of th...
SB
Answered by Sarah B. • Maths tutor
14621 Views

Calculate the concentration in mol/dm3 of 8.0 g of sodium hydroxide (NaOH) in solution with a volume of 50 cm3. (Note Ar(Na) = 23, Ar(O) = 16, Ar(H) = 1)

Calculate Mr(NaOH): Mr(NaOH) = 23 + 16 + 1 = 40, Calculate NaOH moles: n= m/Mr, n= 8.0/40, n= 0.2 moles, Calculate NaOH concentration:(converting from cm 3 to dm 3 by /1000) c= n/v, c= 0.2/(50/1000), c= 4.0 ...
IC
Answered by Imogen C. • Chemistry tutor
10681 Views

i) Factorise x^2 – 7x + 12 ii) Solve x^2 – 7x + 12

i) STEP 1: Make 2 brackets and put an x in each one: (x )(x ) STEP 2: Find 2 numbers when multiplied together make 12 and when added together they make -7 Multiples of 12: 1 x 12 --> 1+12=13 2 x 6 --> ...
HC
Answered by Hashir C. • Maths tutor
4885 Views

Please expand the brackets in the following equation to get a quadratic equation. Then, please show using the quadratic formula that the solutions to the equation are x=3 and x=5. Here is the starting equation: (x-3)(x-5)=0

(X-3)(x-5)=0Use F.O.I.LFirst x multiplied by x gives x 2 outer x multiplied by -5 gives -5xinner x multiplied by -3 gives -3xlast -5x-3 gives +15combining we get x 2 -8x+15=0the quadratic equation ax 2 +bx+c...
JG
Answered by Jacob G. • Maths tutor
4413 Views

‘Transnational corporations (TNCs) only bring advantages to the host country.’ Do you agree with this statement? Justify your decision.

TNCs bring both advantages and disadvantages to host countries, this has a more profound impact in LEDCs, such as Nigeria. Nigeria has approximately 40 TNCs operating within it and one of the biggest is Roya...
AD
Answered by Amber D. • Geography tutor
33445 Views