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irakobra [83]
3 years ago
15

A sample of a radioactive isotope had an initial mass of 700 mg in the year 1991 and decays exponentially over time. A measureme

nt in the year 1996 found that the sample's mass had decayed to 210 mg. What would be the expected mass of the sample in the year 2003, to the nearest whole number?
Mathematics
1 answer:
zvonat [6]3 years ago
6 0

Answer: 678

Step-by-step explanation:

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Line AB contains points A(4, 5) and B(9.7). What is the slope of AB?​
Serggg [28]

Answer: 2/5

Step-by-step explanation:

line up the points and label them XYX2 and Y2. Then subtract X2 minus X1 below Y2 minus Y1 then you will get the slope. In this case it is 2/5 .

7 0
3 years ago
John withdraws $40.00 from her savings account each month. What integer represents the net effect on her balance after 5 months?
lina2011 [118]

Answer:

The net effect of amount in John account after 5 months is  $A - $200

Step-by-step explanation:

Given as :

The amount of money withdraws by John each month from his account = $40

Let The total amount of  money did John had in his account = $A

Let the amount left in John account after 5 months of withdraw = $x

<u>So, According to question</u>

∵ Each month the money withdraw from account = $40

∴ In 5 months , the money withdraw = $40 × 5

I.e In 5 months , the money withdraw = $200

So, The left money in account after withdraw in 5 months = $A - The amount withdraw in 5 months

I.e x = $A - $200

So, The balance in account after 5 months = x =  $A - $200

Hence, The net effect of amount in John account after 5 months is             $A - $200  Answer

6 0
3 years ago
3 is the characteristic in the logarithm of the number
Nady [450]

Answer:

<h2>Since log 3 = 0.4771 and log 10 = 1, so the characteristic of log 3 is 0 and the mantissa of log 10 is 0.</h2>

Step-by-step explanation:

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6 0
3 years ago
A small class has 10 students, 4 of whom are girls and 6 of whom are boys. The teacher is going to choose two of the students at
Vinil7 [7]

Answer:

1/3

Step-by-step explanation:

Dividing the amount of boys (6) by the amount of students (10), and then reiterating that, subtracting 1 from both, you get:
(6/10) x (5/9) which equals a third.

7 0
2 years ago
For each formula,rearrange so a is by itself:
vichka [17]

Step-by-step explanation:

a) 6-9b=3a

First:Subtract

3b=3a

Second: Devide

3b/3a

=(3÷3)(b÷a)

=1b/a

= b/a

B) 6b+2a=3a

First:Transpose (Group the like terms. signs will change.)

-3a+2a=-6b

=-1a=-6b

Second:Divide

=-1a/-6b:(-1÷-6)(a÷b)

=1a/6b

=a/6b

C)a/3=b+2

First: Transpose

a=3+2+b

=a/6+b

6 0
3 years ago
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