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3 years ago

Plz helppp I need help on this

Mathematics

2 answers:

a_sh-v [17]3 years ago

4 0

Answer:

36π in^2

Step-by-step explanation:

The formula for calculating area of a circle is π×r^2

since the radius is given as 6

π × 6^2 = 36π in^2

maksim [4K]3 years ago

3 0

Answer:

The answer is 3rd point, 36π in²

Step-by-step explanation:

Given that thr formula of area of circle is A = π×radius². Then you can substitute the following values into the formula:

radius = 6 in

A = π × 6²

= 36π in²

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A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)e^kt, where m(0) is the initial mass and k is a n

forsale [732]

Answer:

mean life = 8264.5 s

Step-by-step explanation:

k = - 0.000121

The relation is given by

$m = mo e^{kt}$

Now, the mean life is the life time for which the sample retains.

The mean life is the reciprocal of the decay constant.

The relation between the mean life and the decay constant is

$\tau =\frac{1}{k}\\\\\tau = \frac{1}{0.000121} = 8264.5 seconds$

5 0

3 years ago

Algebra 2 help please ASAP

Burka [1]

Answer:

The option A,D and E are correct.

Step-by-step explanation:

Given: 2x^3-250x^2

Factor : 2x^2(x-125)

So, GCF = 2x^2

Now a = 1 and b= 5

we know that a^3-b^3 = (a-b)(a^2+ab+b^2)

(x)^3 - (5)^3 = (x-5)(x^2+5x+25)

So, the option A,D and E are correct.

3 0

3 years ago

The distance between -2 and 4 on the number line can be found by which expression

Dahasolnce [82]

4 - -2

,...........................

6 0

3 years ago

Read 2 more answers

Samantha sends her son, Barry, to a preschool center on certain days. The cost of preschool is $45 per day along with a fixed mo

Hatshy [7]

Answer: Option D

D. 880 = 45d + 70; 18 days

Step-by-step explanation:

We know that the cost of preschool is $ 45 per day plus a monthly fee of $ 70.

We also know that a total of $ 880 was paid last month

To write an equation that represents this situation, let us call d the number of days that Barry attends school

So the cost was:

$45d + 70 = 880$

Now we solve the equation for the variable d

$45d= 880-70$

$45d= 810$

$d= \frac{810}{45}$

$d= 18\ days$

The answer is the option D

6 0

3 years ago

How to do this problem

insens350 [35]

Answer:

multiply 2 with the parenthesis

19-2m<7+8m-8

then you put a dot between -2 amd 3

Step-by-step explanation:

5 0

3 years ago