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Complete the square on this equation: 2x^2 + 20x + 15 = 0.

First you need to remove the coefficient on the x^2. We do this by factorising the 2x^2 + 20x and placing the 2 from the x^2 outside a set of brackets. This looks like:2(x 2 +10x) +15 = 0Then we get half of ...
RL
Answered by Robyn L. • Maths tutor
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Can a man with haemophilia pass it onto a) his son or b) his grandson?

Haemophilia is a sex-linked recessive condition that causes serious bleeding problems. In the human genome there are 22 autosomal chromosome pairs and 1 sex chromosome pair. Males are always XY and females a...
HC
Answered by Heather C. • Biology tutor
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Conjugate the verb COMER in the future tense

COMER yo - comeré - I will eat tu - comerás - You will eat el/ella/es - comerá - he/she/it will eat nosotros - comeremos - We will eat vosotros - comeréis - You all will eat ellos - comerán - They will eat
GF
Answered by Georgia F. • Spanish tutor
3128 Views

How do I know if I need to make the adjective agree with the noun in the masculine or feminine way?

In french, every noun has a "gender". House would be la maison, the determinant la indicates that the noun is "female". So if you were to use an adjective to describe this house, for exam...
EK
Answered by Emilie K. • French tutor
4437 Views

What are the differences between the effects of a catalyst vs reactant concentration on the position of equilibrium/ why?

An increased concentration of reactant will shift equilibrium to the right, because the reactants will react to form more product in order to decrease concentration again. However, while a catalyst will incr...
PS
Answered by Pryanka S. • Chemistry tutor
2316 Views