3 years ago

If 11 pens cost £1.32, find the cost of 7 pens

Mathematics

1 answer:

german3 years ago

4 0

Step-by-step explanation:

£1.32/11=.....a

...a*by7

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Answer:

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3 years ago

Which equation goes with the table?

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let's use engineering notation for the sake of brevity.

1 trillion is 1,000,000,000,000, or just 1E12, twelve zeros.

1 million is then 1E6, six zeros.

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if there are 200million inhabitants in A, namely 200E6 or 2E8 inhabitants, how many gallons per inhabitant from all those 6E11 gallons?

$\bf \begin{array}{ccll} gallons&households\\ \cline{1-2} 6E11&2E8\\ x&1 \end{array}\implies \cfrac{6E11}{x}=\cfrac{2E8}{1}\implies 6E11=2E8x \\\\\\ \cfrac{6E11}{2E8}=x\implies \cfrac{600000000000}{200000000}=x\implies 3000=x$

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3 years ago

a bowler knocks down at least 6 pins 70% of the time. Out of 200 rools, how many times can you predict the bowler knock down at

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