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oksian1 [2.3K]
2 years ago
10

The half-life of Radium-224 is

Mathematics
1 answer:
Sholpan [36]2 years ago
8 0

Answer:

10.98 days is 10.98/3.66 = 3 half life periods and half of the mass is lost at each half life. You can do this in your head. I have!!

Step-by-step explanation:

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F I sold 3 coffees for $2.50 each, how much change do I give the customer from the following amounts?
ehidna [41]
The change to the customer is £1.25
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3 years ago
EVALUATE THE FUNCTION REQUESTED. WRITE YOUR ANSWER AS A FRACTION IN LOWEST TERMS
Kryger [21]

Answer:

• From trigonometry ratios:

{ \boxed{ \rm{ \sin(A)  =  \frac{opposite}{hypotenuse} }}} \\

  • opposite → 28
  • hypotenuse → 35

{ \rm{ \sin(A)  =  \frac{28}{35} }} \\  \\ { \boxed{ \boxed{ \rm{ \:  \sin(A) =  \frac{4}{5}  \:  }}}}

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3 years ago
Solve this system of equations using elimination. <br> X-6=-17<br> -2x+12y=7
AfilCa [17]

Answer:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Point Form:

(−11,−5/4)

Equation Form:

x=−11,y=−5/4

8 0
3 years ago
Jenny and Hanan are collecting clothes for a clothing drive. Hanan collected 1/2 as many bags of clothes as Jenny did. If Jenny
kozerog [31]

Answer:

3/8

Step-by-step explanation:

3/4 is the same as 6/8.

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6 0
3 years ago
Which equation represents the line that passes through the points (6,-3) and (-4,-9)?
Citrus2011 [14]
I will give in y=mx+b and ax+by=c form

using point slope form
y-y1=m(x-x1)
where the slope is m and a point on that line is (x1,y1)

slope between 2 points (x1,y1) and (x2,y2) is (y2-y1)/(x1-x1)

given
(6,-3) and (-4,-9)
slope=(-9-(-3))/(-4-6)=(-9+3)/(-10)=-6/-10=3/5
a point is (6,-3)

y-(-3)=3/5(x-6)
y+3=3/5(x-6)
y+3=3/5x-18/5
y=3/5x-33/5
-3/5x+y=-33/5
3x-5y=33


equation is
y=3/5x-33 or
3x-5y=33 or
y+3=3/5(x-6) or
y+9=3/5(x+4)
7 0
3 years ago
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