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3 years ago

Find the common difference for the arithmetic sequence. 1.7, 2.7, 3.7 4.7.....

Mathematics

1 answer:

Anni [7]3 years ago

5 0

Answer:

Step-by-step explanation:

You do not need to where the formula comes from but, just for fun, here’s a hint

To add up the numbers 1 to 10

Write out the numbers

1 2 3 4 5 6 7 8 9 10

Write them backwards

10 9 8 7 6 5 4 3 2 1

Add up both lists

11 11 11 11 11 11 11 11 11 11

This is 10 × 11 = 110

But this is twice the sum as two lots were added together

So the sum of the numbers 1 to 10 is 110 ÷ 2 = 55

ArSeqSum Notes fig4, downloadable IGCSE & GCSE Maths revision notes

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2 years ago

Madeline uses a mirror on the ground to measure the height of her school building. She walks a distance of 9.5 m from the buildi

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The height of the building is 5.33m.

<h3>How to calculate the height?</h3>

The question is to calculate the height of the building.

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2 years ago

Determine whether the congruence is true or false.<br> 12 ≡ 10 mod 5

dolphi86 [110]

Answer:

The given congruence is false.

Step-by-step explanation:

Given : Expression $12 \equiv 10 \mod 5$

To find : Determine whether the congruence is true or false ?

Solution :

The congruence is in the form $x\mod y\equiv r$

where, x is the dividend

y is divisor

r is the remainder

So, We find $10 \mod 5$

We know, 10 is completely divide by 5 and we get quotient is 2 and remainder is 0.

$10 \mod 5=0$

As $0\neq 12$

Therefore, The given congruence is false.

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3 years ago

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3 years ago