mbonham481
07.05.2021 •
Mathematics
Sarah has £135
gemma has £70
beth has £35
sarah gives some of money to gemma and beth.
the ratio of the amount of moneu sarah, gemma and beth have now is 3:2:1.
How much money did sarah give to gemma???
pls help i so stuck and i need the answer quick!
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Ответ:
£10 pounds
Step-by-step explanation:
135+70+35 = 240 pounds between all 3
3:2:1 ratio means 6x represents all of them
6x=240
x=£40 each 1
3(40) = £120 Sarah
2(40) = £80 Gemma
1(40+ = £40 Beth
Gemma received 10 pounds.
Ответ:
-4.5
Step-by-step explanation:
We will use a graphing calculator to find the line of best fit and the corresponding regression equation.
First we enter the x values into the first list. Then we enter the y values into the second list.
We pull up the graph (attached). Next we calculate the linear regression (screenshot attached). In the regression, we can see that the slope is -4.5 (rounded to the nearest tenth).