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Maths

Asked by Youcef

What's the nth term for 7,10,13,16?

So first we need to find the term to term rule You can see that to get from 7 to 10 we add 3, to get from 10 to 13 we add 3, etc This becomes are coefficient of n (3n) Next we need to find out what we need to add to this number to get to the sequence 3*1+4= 7 3*2+4=10 So the nth term is 3n+4 where n is how far through the sequence you are

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Lauren Holland
·

423 students helped

Maths

Asked by Chloe

Mary invests £12000 in a savings account. The account pays 1.5% compound interest per year. Work out the value of her investment after 2 years.

Start with finding your decimal multiplier Because she earns 1.5% interest per year, we have the decimal 0.015 Because we are adding this to our original amount our decimal multiplier is 1.015 Now use this formula (Original amount) * (decimal multiplier)^(number of ywars) This gives us 12000*1.015² =12362.70 This formula works for any compound interest scenario Hope this helps!

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Lauren Holland
·

423 students helped

Maths

Asked by Youcef

What's the nth term for 7,10,13,16?

3n + 4 Explained: 1. This sequence jumps up in 3's. 2. The three times table has a formula of '3n' 3. The terms in this sequence are four more than the terms in the three times table. 4. The answer would therefore be '3n+4'

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Florence Craig
·

32 students helped

Maths

Asked by Baylee

$58 bill; 20% tip

Maths

Asked by James

3n-2

Maths

Asked by Youcef

What's the nth term for 7,10,13,16?

We can see that each term in the sequence we add 3. Also if we think about what number would come before 7, we can see 7-3=4. This tells us that the nth term is given by: 3n+4

Luke's profile picture
Luke Brooke
·

116 students helped

Maths

Asked by Chloe

At the start of 2014 Tim's house was worth £ 100 000 The value of the house increased by 10% every year. Work out the value of his house at the start of 2018.

Hey Chloe, To start this off, we can write 10% as 0.1. To find the increase of the value after one year you would do £100000 × 1.1. Therefore if we want 4 years we would do £100000 × 1.1^4

Saad Ahmed chowdhury
·

64 students helped

Maths

Asked by Lilly

Is 602 in the sequence 3n+2

Yes We can find the value of n by equating our nth term to 602 3n+2=602 3n. =600 N=600/3 =200 So this is true for n=200

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Lauren Holland
·

423 students helped

Maths

Asked by Milan

Find x x^2 * 3x^-2 = 79

There must be a typo in this question.

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David Mageller
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9.5k students helped

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