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Solve algebraically the simultaneous equations 2x+y=5 and 3x+y=7, for x and y.

Assign 2x+y=5 to be 'Equation 1,' and 3x+y=7 to be 'Equation 2.'The steps to solving for x and y are: 1.get rid of one variable (being either x or y) 2.solve for the other variable 3.substitute the now known...
NK
Answered by Natalie K. • Maths tutor
5452 Views

Two parents are both carriers for a genetic condition which is recessive. What is the percentage chance they will have a child affected by the condition?

I would approach explaining the answer to this question in a manner which was appropriate to the stage and understanding of the student. First I would check understanding of the meaning of the question and i...
TD
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How do I conjugate regular verbs in the imperfect tense?

When conjugating regular verbs in the imperfect tense, use this rule: Take the ' nous' form of the word, e.g. for avoir, take: nous avons Remove the 'nous' and the 'ons' from the end of the verb, so that you...
ER
Answered by Emily R. • French tutor
2168 Views

A is the point with coordinates (5, 9) B is the point with coordinates (d, 15). The gradient of the line AB is 3. Work out the value of d.

gradient is calculated using the change in y coordinates divided by change in x coordinates. so, (15-9)/(d-5)=3 => 6/(d-5)= 3rearrange this equation to get d on one side (6/3)+5 = d therefore d= 7
EC
Answered by Eve C. • Maths tutor
4543 Views

What is the difference between the imperfect and the perfect tense?

Spoken french uses different kinds of tenses to talk about the past. The main two which are used are the imperfect (l'imparfait) and the perfect (le passé composé). The imperfect tense, which is formed with ...
AP
Answered by Alice P. • French tutor
2228 Views