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1. (a) Find the sum of all the integers between 1 and 1000 which are divisible by 7. (b) Hence, or otherwise, evaluate the sum of (7r+2) from r=1 to r=142

1a) 1000/7=142.8.... Therefore there are 142 multiples of 7 between 1 and 1000 Therefore the sum of series from 1 to 142 is 1/7th of the solution Calculation:7 0.5 142 143=71071 1b) The sum of (7r+2) from r=...
JF
Answered by Jack F. • Maths tutor
6353 Views

Was machst du am liebsten in deiner Freizeit? Folgefragen: Warum macht es dir Spaß? Wo machst du es? Sind andere Leute dabei? etc.

The answer is different for every student - and that is what I like about open questions like this. They are a great starter for a session, but also great to get to know the student and their interests. The ...
JP
Answered by Johannes P. • German tutor
4489 Views

Describe why a person with type 2 diabetes would struggle to control their blood sugar

Insulin resistance
AR
Answered by Ahmed R. • Biology tutor
2631 Views

Given that x : y = 7 : 4 and x + y = 88, calculate x - y.

From x : y = 7 : 4 work out an expression for x: x = y (7/4) and substitute into x + y = 88: y(7/4 + 1) = 88y( 11/4) = 88 y = 88 (4/11) = 8 x 4 = 24substitute this into x + y = 88 to get x = 88 - 24 = 64. x ...
TD
Answered by Tutor157746 D. • Maths tutor
4021 Views

What is meant by the term "economies of scale" and what types of EOS exist?

Economies of Scale are defined as the reductions in the cost per unit produced that are a result from the increase in the overall scale of production. In other words, as the business produces more and more u...
AK
3275 Views