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Solve (4x10^-3)x(9x10^4)

The answer is 1.3x10^2. To solve this you need to multiply the integers first to get 13. The exponents (x10^4 for example) are then multiplied, since it is multiplication the powers are simply added to give ...
PR
Answered by Philippe R. • Maths tutor
7377 Views

Factorise x^2 + 2x - 3

This is in the form Ax^2+Bx +C where A=1 B=2 and C=-3 We need to find two numbers (let's call them p and q) which multiply to equal C and add to equal B. Since C is negative we need a positive number and a n...
CG
Answered by Catherine G. • Maths tutor
8804 Views

What is the correct order of the reflex arc?

Students must select 1 of the following: a) Motor - Sensory - Relay b) Effector - Relay - Motor c) Sensory - Relay - Motor d) Relay - Motor - Sensory The correct answer is C. When a stimulus is detected by a...
BS
Answered by Beth S. • Biology tutor
15952 Views

Solve the following equation. (x)^2-8x+15=0

Factors of 15 that add together to make -8: -3 and -5 Factorise: (x-3)(x-5)=0 Solve: x=3 x=5
AC
Answered by Amelia C. • Maths tutor
4112 Views

When nitrogen and hydrogen react in the Haber process the reaction can reach a dynamic equilibrium. Explain what is meant by the term dynamic equilibrium.

In a dynamic equilibrium the rate of the forward reaction is the same as the rate of the reverse reaction and there is no overall change in the amount of each product.
AC
Answered by Amelia C. • Chemistry tutor
4428 Views