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Free_Kalibri [48]
2 years ago
12

A 78 gram sample of Uranium loses half of its mass each year. What is the exponential equation? Please explain why A is the corr

ect answer
A. y=78(0.5)^x


B. y=78(1.5)^x
Mathematics
1 answer:
Fiesta28 [93]2 years ago
8 0

Answer:

A

Step-by-step explanation:

The first answer is correct because we have a decay factor.

The sample is losing mass, so the number that is being multiplied by a power of x must be less than 1.

If the second answer were used, then the sample would be gaining mass.

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A company wants to select 1 project from a set of 4 possible projects. Which of the following constraints ensures that only 1 wi
Elza [17]

Given:

A company wants to select 1 project from a set of 4 possible projects.

Consider the options are:

a. X_1+X_2+X_3+X_4=1

b. X_1+X_2+X_3+X_4\leq 1

c. X_1+X_2+X_3+X_4\geq 1

d. X_1+X_2+X_3+X_4\geq 0

To find:

The constraints that ensures only 1 will be selected.

Solution:

It is given that the company wants to select 1 project from a set of 4 possible projects. It means the sum of selected projects must be equal to 1.

X_1+X_2+X_3+X_4=1

Therefore, the correct option is (a).

8 0
3 years ago
1 in = 12 ft
harkovskaia [24]

Answer:

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8 0
2 years ago
The y-intercept of the line whose equation is 7x - 4y = 8 is what
Anni [7]
The y intercept is when x is 0. So, we have to plug in 0 for x. You can do this in many different ways as well.
7(0)-4y=8
-4y=8
Divide both sides by -4.
Y=-2
So, the Y intercept is -2 (0,-2).
6 0
2 years ago
Find x using the Law of Cosines. Round to the nearest tenth.
Bad White [126]
The Answer for "X" is going to be  25.63201, rounded to the nearest tenth would be 25.6.
 

I hope this helped :)
 
5 0
3 years ago
What is the line of SYMMETRY for they PARABLLA who’s equation is y=3x2+24x-1?
Arada [10]

Answer

The line of symmetry x = -4

Step by step explanation

Here we have to use the formula.

The symmetry of a parabola x = -b/2a

Now compare the given equation y = 3x^2 + 24x -1 with the general form y = ax^2 + bx + c and identify the value of "a" and "b"


Here a = 3 and b = 24. Now plug in these values in to the formula to find the line of symmetry.

x = -24/ 2(3)

x = -24/6

x = -4

Therefore, the line of symmetry x = -4.

Thank you.

6 0
3 years ago
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