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valina [46]
4 years ago
9

0.142857 rounded to the nearest tenth

Mathematics
2 answers:
eimsori [14]4 years ago
7 0

0.142857 rounded to the nearest tenth is 0.1

artcher [175]4 years ago
3 0

Answer:

0.1

Step-by-step explanation:

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Element X is a radioactive isotope such that every 5 years, its mass decreases by half.
Verdich [7]

Answer: 24 grams of element would remain.

Step-by-step explanation:

Exponential function for decay:

f(x)=Ab^{\frac{x}{n}} ....(i) , where A = initial value , b = decay factor, x = time , n= time per period

As per given,

A = 569 grams , b=\dfrac12

n= 5 years, t = 23 years

Put all values in (i) , we get

f(23)=590(\dfrac12)^{\frac{23}{5}}\\\\\\=590\times 0.0412346222117\\\\=24.3284271049\approx 24

Hence, after 23 years , 24 grams of element would remain.

6 0
3 years ago
Help for Geometry #6 and 7
Arturiano [62]
Find the area of the rectangle and the 1/2 circle, then subtract the half circle's area from the rectangle's.
Area of the rectangle is 30in.
Area of the 1/2 circle is 19.625.
Subtract
30-19.625
10.375
(Round it to 10.4 in this case)
8 0
4 years ago
Please help i am stuck with this problem please help
Masteriza [31]

Answer:

  C

Step-by-step explanation:

The first number on the mechanic's list is the one that is most negative. The negative numbers on the list are ...

  -3/16, -1/4, -1/16

These are easier to compare if they have a common denominator:

  -1/4 = -4/16

So, the numbers are ...

  -3/16, -4/16, -1/16

The one that is most negative is -4/16 = -1/4. Only one answer choice has this listed first. (No further work is necessary.)

8 0
3 years ago
8/x=4/x+10<br><br> What's this proportion
user100 [1]
2 ways:
1. solve for x
2. simplify the 10 so it can add to the 4/x

if you use 1. solve for x

8/x=4/x+10
subtract 4/x from both sides
4/x=10
multiply both sides by x
4=10x
divide both side sby 10
0.4=x

proportion is 8/0.4=4/0.4+10


if you use 2. make 10 addable to 4/x

4/x+10/1
multiply 10/1 by x/x
4/x+10x/x=(4+10x)/x
8/x=(4+10x)/x
multiply both sides by x to clear fraciton
8=4+10x
subtract 4
4=10x
divide 10
0.4=x
6 0
3 years ago
What is the area and circumference of a circle if r=2 1/2​
Georgia [21]

Answer:

Area= 19.63

Circumference= 15.71

Step-by-step explanation:

Area:

  • A= πr^2
  • A=π(2.5)^2
  • A=5π
  • A= 19.63

Circumference

  • C= 2πr
  • C= 2π2.5
  • C=5π
  • C=15.71

7 0
4 years ago
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