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gulaghasi [49]
4 years ago
13

Which of the following represents alpha decay?

Mathematics
1 answer:
Brilliant_brown [7]4 years ago
6 0

The correct answer is the third option. I just got it correct.

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Find the exact solution of x.<br><br> 4x3 = 500<br> a. 3√5<br> b. ±5<br> c. -5<br> d. 5
sergey [27]
A because I do not know what the problem is
7 0
3 years ago
Read 2 more answers
Three consecutive even integers have a sum of 36. Find the integers.
marissa [1.9K]

first integer=x

second integer=x+1

third integer= x+2 (x + 1 + 1)

x + (x + 1) + (x + 2) = 36

5 0
3 years ago
What is the value of this expression when x=-1 and Y=2?<br> 4x^3 y^2
RSB [31]

Answer:

-16

Step-by-step explanation:

4x^3*y^2=

4(-1)^3*(2^2)=

4(-1)^3*(4)=

4*-1*4=

16*-1=

-16

8 0
3 years ago
Which is the equation of a parabola with a directrix at y = −3 and a focus at (5, 3)?
kramer

Answer:

y = 1/12 (x − 5)²

Step-by-step explanation:

We can solve this graphically without doing calculations.

The y component of the focus is y = 3.  Since this is above the directrix, we know this is an upward facing parabola, so it must have a positive coefficient.  That narrows the possible answers to A and C.

The x component of the focus is x = 5.  Since this is above the vertex, we know the x component of the vertex is also x = 5.

So the answer is A. y = 1/12 (x−5)².

But let's say this wasn't a multiple choice question and we needed to do calculations.  The equation of a parabola is:

y = 1/(4p) (x − h)² + k

where (h, k) is the vertex and p is the distance from the vertex to the focus.

The vertex is halfway between the focus and the directrix.  So p is half the difference of the y components:

p = (3 − (-3)) / 2

p = 3

k, the y component of the vertex, is the average:

k = (3 + (-3)) / 2

k = 0

And h, the x component of the vertex, is the same as the focus:

h = 5

So:

y = 1/(4×3) (x − 5)² + 0

y = 1/12 (x − 5)²

3 0
3 years ago
1/4 long divison work
Ilia_Sergeevich [38]

Answer:

0.25

Step-by-step explanation:

8 0
3 years ago
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