It is just the multiplication of vectors. We'll multiply corresponding pairs together. The general formula for the pairs of (

;

) and (

;

) is

*

+

*

= (-6)*(-3)+4*6=18+24=42
The probability of rolling a sum of six or two even numbers.
is P = 1/3
<h3>
How to find the probability?</h3>
Here we are rolling two dice, and each dice has 6 possible outcomes, then the total number of outcomes is:
6*6 = 36
Now, the outcomes that given a sum of 6 are:
dice 1 dice 2.
1 5
5 1
2 4
4 2
3 3
We have 5 outcomes there.
The outcomes where both numbers are even are:
dice 1 dice 2.
2 2
2 4
4 2
4 4
4 6
6 2
6 4
6 6
We have 8 outcomes here (such that 2 are in the ones we counted before).
Then the total number of outcomes that either add to 6 or have both even numbers are:
5 + 8 - 2 = 12
Then 12 out of 36 outcomes either add to 6 or have both even numbers, this means that the probability is:
P = 12/36 = 1/3
If you want to learn more about probability:
brainly.com/question/25870256
#SPJ1
ANSWER
250g of Roquefort cheese will cost
£2.8
EXPLANATION
If 150g of roquefort cheese cost £1.68, we can write the ratio,

Let 250g of Roquefort cheese cost £x.
Then we can again write the ratio,

We can equate the two ratios and solve for x.

We rewrite the ratios as fractions to obtain,

We cross multiply to get,

This implies that,

Divide both sides by 150 to get,


Therefore 250g of Roquefort cheese will cost
£2.8
237% move the decimal twice