Let the cost of 1 notebook be x and the cost of 1 binder be y.
4 notebooks and 3 binders would cost 23.5
Therefore, 4x + 3y = 23.5 (1)
7 notebooks and 6 binders would cost 44.5
Therefore, 7x + 6y = 44.5 (2)
Multiply the first equation by 2.
8x + 6y = 47 (3)
(3) - (2) gives
x = 2.5
Substitute the value of x in (1), we get,
4(2.5) + 3y = 23.5
10 + 3y = 23.5
3y = 23.5 - 10
3y = 13.5
y = 13.5/3
y = 4.5
Hence, cost of 5 notebooks and 3 binders is:
5x + 3y = 5(2.5) + 3(4.5)
= 12.5 + 13.5
= 26
Hence, cost of 5 notebooks and 3 binders is $26.
In hypothesis testing the claim that we have to test always goes into alternative hypothesis. The null hypothesis is negation of claim.
Here the claim to be tested is James bond can taste the difference between a martini that is shaken and one that is stirred.
So negation of this claim is James bond can not taste the difference between a martini that is shaken and one that is stirred.
So the null hypothesis for given experiment is
Null hypothesis: James bond can not taste the difference between a martini that is shaken and one that is stirred.
Alternative hypothesis: James bond can taste the difference between a martini that us shaken and one that is stirred.
Answer:
7.9
Step-by-step explanation:
Multiply both sides of the equation by 11. This cancels out the fraction so 11 * 5/7 = x
lmk if I misunderstood the question or need to elaborate
Answer:
1/15
Step-by-step explanation:
1/5+3+2 all of the marbles
2/10 odds of drawing an orange marble(bc 2 orange marble)
3/9 because to get 3 green and 1 marble is removed and 9 is total marbles left
2/10*3/9=1/15 muliply odds because 2 draws of marbles
multiplying both sides by x^2
simplifying
dividing by 7
