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Marina CMI [18]
3 years ago
13

Write an equivalent expression for 4(a+5)

Mathematics
1 answer:
Drupady [299]3 years ago
8 0

\huge \boxed{4a+20}

We can do this using the distributive property, which states that a(b+c)=ab+ac.

Distribute the 4 to the a and the 5. 4a+4(5)

Multiply. \displaystyle \boxed{4a+20}

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Iodine-131, a radioactive substance that is effective in locating brain​ tumors, has a​ half-life of only 8 days. A hospital pur
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The mass of substance left after 7 days is 13.09 g

The mass of substance left, N is given by

N = N₀exp(-λt) where λ = decay constant and N₀ = initial mass of substance present = 24 g and t = time

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So, λ = 0.693/t'

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Since the mass of substance left is N = N₀exp(-λt) and we require the mass of substance after t = 7 days,

N = N₀exp(-λt)

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N = 13.09 g

So, the mass of substance left after 7 days is 13.09 g

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brainly.com/question/23705307

7 0
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Chef Johnson used 4 1/2 cups of flour of flour to make 4 fruitcakes.How many cups of flour are needed for 1 fruitcake?
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6 0
3 years ago
The measure of three angles of a triangle are in the ratio 4:5:6, find the measure of each
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