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2 years ago

Cost of fuel is $1.45/L. How much is saved after 4 cents per litre are taken off the price ?

Mathematics

1 answer:

OverLord2011 [107]2 years ago

8 0

Answer:

The answer can be calculated by the following steps;

Step-by-step explanation:

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What are the x-coordinates of the solutions to this system of equations?

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X equals 4 because 2 times 2 equals 4 and then 4 times 4 =16

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2 years ago

The half-life of Radium-226 is 1590 years. If a sample contains 200 mg, how many mg will remain after 1000 years?

adell [148]

Answer: 129.33 g

Step-by-step explanation:

$$$Let $p=A \cdot e^{n t}$ \\$(p=$ present amount, $A=$ initial amount, $n=$ decay rate, $t=$ time)$

$\begin{aligned}&\Rightarrow \text { Given } p=\frac{A}{2} \ a t \ t=1590 \\&\Rightarrow \frac{1}{2}=e^{1590n} \Rightarrow n=\frac{\ln (1 / 2)}{1590}=-0.00043594162\end{aligned}$

$If $A=200 \mathrm{mg}$ and $t=1000$ then,$$\begin{aligned}P &=200 e^{\left(\frac{\ln \left(1/2\right)}{1590}\right) \cdot 1000} \text \\\\&=129.33 \text { grams}\end{aligned}$

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2 years ago

Question1, shop A normal price £85 1/3 off and shop B normal price £80 30% off

ser-zykov [4K]

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3 years ago

The most common source of income is employment.<br> true or false?

Bond [772]

Answer:

The most common source of income is business ownership. A. True.

Step-by-step explanation:

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2 years ago

(8p+7)-(5p+1) subtract

Blizzard [7]

Answer:

Step-by-step explanation:

8p+7−(5p+1)

=8p+7+−1(5p+1)

=8p+7+−1(5p)+(−1)(1)

=8p+7+−5p+−1

=(8p+−5p)+(7+−1)

=3p+6

and thats how you get the answer

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2 years ago