3 years ago

Sally and Ann share £30 in the ratio 3:2. Sally keeps the biggest share. How much does she get.

1 answer:

4 0

3x+2x=30
5x=30
x=5
3(5)= 15

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mylen [45]

(10/12) / (4/6)...when dividing with fractions, flip what u r dividing by, then multiply

10/12 * 6/4 = 10/8 which reduces to 5/4 or 1 1/4

4 0

2 years ago

pishuonlain [190]

Answer:

So, we conclude that the best estimate for the difference in the proportion of smokers is 4.4%.

Step-by-step explanation:

We know that 27 of the 193 males in the sample smoke while 16 of the 169 females in the sample smoke.

We have the following proportion:

$27:x=193:100\%\\\\193x=27\cdot 100\\\\193x=2700\\\\x=\frac{2700}{193}\\\\x=13.9\%$

So we get that 13.9% of men smoke.

We have the following proportion:

$16:x=169:100\%\\\\169x=16\cdot 100\\\\169x=1600\\\\x=\frac{1600}{169}\\\\x=9.5\%$

So we get that 9.5% of women smoke.

We get: 13.9%-9.5%=4.4%.

So, we conclude that the best estimate for the difference in the proportion of smokers is 4.4%.

6 0

3 years ago

ycow [4]

The ones with ✓ signs are irrational the rest are rational. note this is not generally true but it is for this particular set

7 0

3 years ago

tatuchka [14]

??? Do you mean 17 divided by 2 cuz that's 8.5

3 0

3 years ago

GalinKa [24]

6 divided by 6n equals 14
6/6n = 14 (6/6 = 1)
n = 14

6 0

3 years ago