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AnnyKZ [126]
2 years ago
8

A radioactive isotope decays. The mass of the daughter atom is 4 less than the parent. What type of decay occurred? *

Mathematics
1 answer:
Anettt [7]2 years ago
6 0

Answer:

<em>I dont know</em>

Step-by-step explanation:

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I don’t really understand this type of stuff so please help.
ohaa [14]

For 1 and 2, you plot both lines, and wherever they intersect is the solution to the system. Given the equation of a line, I think the easiest way to plot it is to find two points on the line, then draw a line through them. For example, if y=5x-1, then when x=0, you get y=-1; when x=1, you get y=4. So plot the points (0, -1) and (1, 4), then strike a line through.

1. Notice that dividing both sides of 2y=10x-2 by 2 returns y=5x-1, same as the first equation. So the system of equations reduces to one equation, which can have an infinite number of solutions. (This is because for any choice of x or y, you can always find a corresponding value for the other variable.)

2. See attached image. 3x-y=2 is given by the purple line.

For 3-6, you have several options. The two simplest methods of solving them are by substitution or elimination.

3. Like with (1), notice that dividing both sides of the first equation by 2 gives x+3y=9, so there will be an infinite number of solutions.

4. (by substitution) Since y=-7x+3, we can replace y in the second equation:

-7x+3+7x=10\implies3=10

but this is false, so there are no solutions to this system.

5. (by substitution) Since x=2y+2, in the first equation we have

-5(2y+2)+3y=-10y-10+3y=-7y-10=11\implies-7y=21\implies y=-3

Then back in the second equation we find

x=2(-3)+2=-6+2=-4

So (-4, -3) is the only solution here.

6. (by substitution) Notice that the left hand sides of both equations are the same, so we end up with 7 = 12, but this is false, so no solution exists.

5 0
3 years ago
Sammy bought a pair of shoes priced at $47.99. The sales tax was $2.88.Sammy gave the clerk $60.00. How much money should he get
artcher [175]
$47.99+$2.88=$50.87 (total cost)

$60.00-$50.87=$9.13

he should get back $9.13

5 0
3 years ago
Read 2 more answers
What is the area of the white region? Steps please and thank you!
DIA [1.3K]

Answer:the ANS to 4 significant figures is 51.92

Step-by-step explanation:u first find the area of the whole chord which is 150 divided by 360 multiplied by the π × 7^2 subtracted from the area of The triangle by doing 1/2×7×7sin150. I hope it helps

5 0
3 years ago
What is the domain and range of the relation [(1, -8), (-7,8), (-3, 7). (-3, -5]?​
Nadusha1986 [10]

Step-by-step explanation:

domain = {-7, -3, 1}

range ={-8, -5, 7, 8}

6 0
3 years ago
How can I find the volume of L shape blocks
Anvisha [2.4K]
The formula for volume is length multiplied by width multiplied by height
I hope this helps sorry if it doesn't :)
8 0
3 years ago
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