2 years ago

What is 5,678.321 in word form

Mathematics

1 answer:

grandymaker [24]2 years ago

4 0

Five thousand six hundred seventy eighty and three hundred twenty one

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An element with mass 130 grams decays by 22% per minute. How much of the element is remaining after 7 minutes, to the nearest 10

shepuryov [24]

22.8 grams of element will be remaining after 7 minutes

Further explanation:

Given

$Mass\ of\ element=130g\\Percentage\ of\ reduction=22\%$

The element reduces (1-22%) in one minute.

The process will be repeated 7 times for 7 minutes

If we have to calculate the amount of element after 7 minutes

then the total reduction will be: (1-22%)^7

$Remaining\ amount=130*(1-22\%)^7\\=130*(1-0.22)^7\\=130*(0.78)^7\\=130*0.18\\=22.84g\\Rounding\ off\ to\ nearest\ tenth\\=22.8g$

22.8 grams of element will be remaining after 7 minutes

Keywords: Decay, Percentage

Learn more about percentage at:

#LearnwithBrainly

6 0

3 years ago

I don't know how to do this please help

AveGali [126]

5z>15-----subtract 2 on both sides
z>3----divide by 5
therefore, z must equal -10, or -4

8 0

3 years ago

Pleaseeeeeeeeeeee helpppppppppppppppp

gulaghasi [49]

Answer:

hirap naman yan basahin mo kasi directions

7 0

2 years ago

416/8 long division

Ganezh [65]

The answer for that question is 52

3 0

3 years ago

What is 142% of 469?

arsen [322]

$\begin{array}{ccc}100\%&-&469\\\\142\%&-&x\end{array}\\\\\\cross\ multiply\\\\100x=142\times469\\\\100x=66598\ \ \ \ |divide\ both\ sides\ by\ 100\\\\\boxed{x=665.98}$

8 0

2 years ago

Read 2 more answers