2 years ago

The total cost of 1 pencil and 2 erasers is £8, and the total cost of 2 pencils and 4 erasers is £20, as shown below:

Mathematics

1 answer:

Paul [167]2 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

The 2 equations are

x + 2y = 8 → (1)

2x + 4y = 20 → (2)

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What’s is 13.75 of 2/5

ivanzaharov [21]

Answer:

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Step-by-step explanation:

Of means multiply

13.75 * 2/5

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5.5

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2 years ago

A 46 gram sample of a substance that is used to sterilize surgical instruments has a k-value of 0.1374. Find the substance's hal

mars1129 [50]

Answer:

$t=5.0days$

Step-by-step explanation:

Using the formula for the exponential decay that is $N=N_{0}e^{-kt}$ , we have N= $\frac{1}{2}{\times}46=23$ , $N_{0}=46$ and k=0.1374.

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2 years ago

Write 47 and 1000 as a decimal

Marrrta [24]

47 is equal to .47 and 1000 is equal to 1

have a great day ♡

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Here’s the answer you need to know

vovikov84 [41]

Thank you sooo much Maddi441

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