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defon
3 years ago
13

Approximately how long does it take a sample of francium-223 to decay by 50%?

Mathematics
1 answer:
valentina_108 [34]3 years ago
6 0
B. 100 minutes correct me if i’m wrong
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What is adding 40 percent to 1540.00​
Ludmilka [50]

Answer:

Addition but... 40/100x1540 = 616.00

Step-by-step explanation:

edit: i goofed

8 0
3 years ago
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Complete explanation of water the graph represents a proportional or a non-for pusher liner relationship
faust18 [17]

Answer:

Porportional

Step-by-step explanation:

Its a straight line.

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3 years ago
Two angles are supplementary. One angle
Shkiper50 [21]

The measures of both the angles are 163 degrees and 17 degrees

<h3><u>Solution:</u></h3>

Given that two angles are supplementary

Let one of the angle be "x"

Let the other angle be "y"

Two angles are supplementary when add up to 180 degrees

x + y = 180 ----- eqn 1

Given that One angle  measures 10 more than 9 times the other

x = 10 + 9y ----- eqn 2

Substitute eqn 2 in eqn 1

10 + 9y + y = 180

10 + 10y = 180

10y = 180 - 10

10y = 170

<h3>y = 17</h3>

Substitute y = 17 in eqn 2

x = 10 + 9(17)

x = 10 + 153

<h3>x = 163</h3>

Thus the measures of both the angles are 163 degrees and 17 degrees

6 0
3 years ago
What is 276 over 11 in a decimal
alekssr [168]
Just put it in a calculator!

276/11

25.09090909....

The answer is 25.09 repeating

Hope this helps!
3 0
3 years ago
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I need help. I need help. I need help. I need help. I need help. I need help. I need help. I need help. I need help. I need help
Dominik [7]

Answer:

y = -3/2x + 3

Step-by-step explanation:

To figure out the equation, it is very simple:

First you must find the y-int

The y-int is the point where the line touches the y-axis

The only point that touches the y-axis is (0,3)

so the y-int is 3

Next we need to find the slope, which is rise over run

we must find how far one point is from another point

so we start from the point (0,3) on the y-axis, then we go down 3 and to the right 2 and we are on the point (2,0)

so the slope is -3/2, because the line is going downwards, not upwards

now we just put the equation together, in the slope intercept form

y-int = b = 3

slope = m = -3/2

y = mx + b

y = -3/2x + 3

3 0
3 years ago
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