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Solve the simultaneous equations: 2x+5y=25, x=y+2

using our second equation, we can see that x=y+2. Therefore we can sub x into the first equation. This will give us 2*(y+2)+5y=25. We can go ahead and expand the brackets, which gives us 2y+4+5y=25. We can c...
LW
Answered by Louis W. • Maths tutor
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How successful was Nixon's foreign policy regarding Vietnam?

Nixon's policy regarding Vietnam was characterised by his rhetoric 'Peace with honor'. He was determined to not be the first American to lose a war, but also realised that US withdrawal was necessary. Nixon ...
JP
Answered by Jake P. • History tutor
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Colour blindness is a recessive trait caused by an error in the X chromosome. A couple without color blindness are expecting their second child. Their first child was born colour blind. What is the probability of their second child being colour blind?

Colour blindness is recessive, which implies that the child needs to have both chromosomes carrying the genetic error to be born with this condition. We know this is linked to the sex chromosome X so we will...
SR
Answered by Sabela R. • Biology tutor
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Decline the verb "to go" in the preterit tense. What other Spanish verb follows the same conjugation in this tense?

To go in Spanish is ir . It is very irregular verb so the normal rules for conjugating do not apply to it. It is easier to consider that the root for the preterit tense is fuir , although the pattern is not ...
SR
Answered by Sabela R. • Spanish tutor
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Name two ways in which meiosis produces genetic variation.

Independent segregation (of homologous chromosomes) Crossing over Random assortment
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Answered by Daisy L. • Biology tutor
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