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ziro4ka [17]
3 years ago
6

Element X is a radioactive isotope such that every 81 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 1800 grams, how much of the element would remain after 28 years, to the nearest whole number?
Mathematics
1 answer:
Ksenya-84 [330]3 years ago
3 0

Answer:

1426

Step-by-step explanation:

this question has been asked before and answered incorrectly but people corrected them in the comments.

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What is the value of x in 5x + 5 = 8 3/4
Anton [14]

。☆✼★ ━━━━━━━━━━━━━━  ☾  

5x + 5 = 8 3/4

- 5 from both sides

5x = 15/4

/5 on both sides

x = 3/4

Have A Nice Day ❤    

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5 0
3 years ago
Given ΔABC with A(–4, –2), B(4, 4), and C(18, –8), write the equation for the line containing median segment The term is line se
Monica [59]
Here we want to find the equation of the line containing the median CP.

P, being the midpoint of AB can be found using the midpoint formula as:

\displaystyle{ P=( \frac{-4+4}{2} ,  \frac{-2+4}{2} )=(0, 1).


The slope m of the line through CP can be found by the slope formula using points C(18, -8) and P(0, 1):

\displaystyle{ m= \frac{y_2-y_1}{x_2-x_1}= \frac{-8-1}{18-0}= \frac{-9}{18}= \frac{-1}{2}.


Now, we can write the equation of the line with slope -1/2, passing through
P(0, 1):

y-1= \frac{-1}{2}(x-0)\\\\y= -\frac{1}{2}x+1.


Answer: y=-\frac{1}{2}x+1
5 0
4 years ago
The hour of a clock moves from 10 to 1 o'clock. Through how many degrees does it moves?
wolverine [178]
Since each interval of the hours of the clock is 30 degrees, the movement of the hand of the clock from 10 to 1 clockwisely is 90 degrees. the answer is 90 degrees
4 0
3 years ago
4x+17/8-13x-2/17x-32+x/3=7x/12-x+16
Dahasolnce [82]

Answer:

4063/1274

Step-by-step explanation:

I suggest using photo math app after update it has improved

6 0
3 years ago
Which represents the solution(s) of the system of equations, y = x2 – 2x – 15 and y = 8x – 40? Determine the solution set algebr
Helga [31]
Eliminate 'y' by equating 
<span>8x - 40 = x^2 - 2x - 15 </span>
<span>x^2 - 2x - 8x - 15 + 40 = 0 </span>
<span>x^2 - 10x + 25 = 0 </span>
<span>(x - 5)(x - 5) = 0 </span>
<span>(x - 5)^2 </span>

<span>Hence x = 5 is the only solution for 'x'. </span>

<span>Substitute in to the linear eq;n for 'y' </span>
<span>y = 8(5) - 40 </span>
<span>y = 40 - 40 </span>
<span>y = 0 </span>

<span>Hence the solution in ( x,y) form is ( 5,0).

Shoutout to @lenpol7 


Have an amazing day and stay hopeful!

</span>
4 0
4 years ago
Read 2 more answers
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