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belka [17]
3 years ago
12

HELP PLEASE FAST Thanks xoxo!

Mathematics
1 answer:
eimsori [14]3 years ago
3 0

Answer:

3rd Choice

Step-by-step explanation:

The third answer choice is correct, remember that a shape is not a rectangle or square if it doesn't have four 90 degree angles.

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A sample of radioactive isotope of an element contains 60 millions atoms and is found to have a decay rate of 5 hundred atoms pe
kotegsom [21]

Using a linear function, it is found that the half life of the isotope is of 6,000 years.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

Considering the quantity and the decay rate, the function for the amount of the isotope is given by:

A(t) = 60,000,000 - 5,000t

The half-life is when the amount is half of the initial amount of 60 millions atoms, hence when A(t) = 30,000,000, so:

30,000,000 = 60,000,000 - 5,000t

5,000t = 30,000,000

t = 30,000,000/5,000

t = 6,000.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

8 0
2 years ago
Which equations and/or functions represent the graphed line? Select three options.
BlackZzzverrR [31]

The equations of the graphed line and function can be written as:

f(x) = 1/2x + 2

y - 3 = 1/2(x - 2)

y - 1 = 0.5(x + 2)

<h3>What is the Equation of a Graphed Line?</h3>

Equation of a graphed line can be expressed in:

Slope-intercept form as y = mx + b, where m = slope, b = y-intercept; or

Point-slope form as y - b = m(x - a), where (a, b) is a point and m = slope.

Find the slope (m) of the line:

Slope (m) = change in y / change in x = 1/2 = 0.5

y-intercept (b) = 2

To express the graphed line in slope-intercept form, substitute m = 1/2 and b = 2 into f(x) = mx + b:

f(x) = 1/2x + 2.

Using the point-slope form, write the equation by substituting m = 1/2 and (a, b) = (2, 3) into y - b = m(x - a):

y - 3 = 1/2(x - 2)

Or substitute m = 0.5 and (a, b) = (-2, 1) into y - b = m(x - a):

y - 1 = 0.5(x - (-2))

y - 1 = 0.5(x + 2)

Learn more about the equation of a graphed line on:

brainly.com/question/11490660

#SPJ1

7 0
2 years ago
3x - 5y = 10 6x + 3y = -6 Marybeth is going to solve this problem by multiplying the top equation by -2. If she does this and co
mezya [45]
Nothing, x=0 and y=-2
5 0
4 years ago
Read 2 more answers
What is 6k + 7 when k = 5
Ulleksa [173]

Answer:

37

Step-by-step explanation:

6×5+7

30+7

Answer is 37

7 0
3 years ago
Read 2 more answers
Which expression is equivalent
luda_lava [24]
The correct answer is A
6 0
4 years ago
Read 2 more answers
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