Top answers

Solve 3x^2+7x-13=7 to find x.

Firstly, you need to get the equation to equal zero, so that you can use the quadratic formula to solve. Therefore you subtract 7 from both sides, meaning the equation becomes: 3x^2+7x-20=0. Recall the quadr...
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Answered by Ellie M. • Maths tutor
4170 Views

What is a tone row?

A tone row is a series of notes in a fixed order, like a melody or riff but with no rhythmic values assigned to the pitches. Most commonly it contains all 12 tones of the chromatic scale just once, such as i...
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Answered by Leo T. • Music tutor
5732 Views

How do you know whether to use « er » or « é/ée/és/ées » at the end of a verb ?

This is a common mistake even for native French speakers ! The difference is that « er » is the infinitive form of some verbs whereas verbs ending with -é (for masculine, or -ée for feminine, -és for masculi...
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Answered by Julien M. • French tutor
15235 Views

What types of words are these: ponies, sheep, mountains, bushes

A) abstract nounsB) proper nounsC) common nounsD) collective nouns E) pronouns Answer- C
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Answered by Rochelle S. • English tutor
9507 Views

In DNA, what bonds form between the nitrogenous bases

Hydrogen bonds.
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Answered by Rochelle S. • Biology tutor
3067 Views