3 years ago

April has 5 milligrams of zinc and 0.25 milligrams of copper.

Mathematics

1 answer:

GREYUIT [131]3 years ago

7 0

Answer:

It's 4.75

Step-by-step explanation:

If you subtract 5-.25=? The answer would be 4.75. Hope this helps.

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8.27 x 10^7

Step-by-step explanation:

Move the decimal over 7 times

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3 years ago

A train is traveling at a constant speed. The diagram represents the train's distance and time. What is the speed of the train?

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Step-by-step explanation:

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Step-by-step explanation:

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Help and explain explain !!!!!!!!!!

tigry1 [53]

Answer:

$x=-1\text{ or }x=11$

Step-by-step explanation:

For $a=|b|$ , we have two cases:

$\begin{cases}a=b,\\a=-b\end{cases}$

Therefore, for $18=|15-3x|$ , we have the following cases:

$\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}$

Solving, we have:

$\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}$ .

Therefore,

$\implies \boxed{x=-1\text{ or }x=11}$

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3 years ago