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scoundrel [369]
3 years ago
10

The number of bacteria in a Petri dish triple every month. If the dish started with 2500 bacteria, how many will there be in 10

months? Write an equation and show how you know?
Mathematics
1 answer:
diamong [38]3 years ago
7 0

Let m be time in months.   When m=0 we have 2500, when m=3 we have double that.  That makes our equation

A = 2500 \cdot 2 ^{m/3}

For 10 months we get

A = 2500 \cdot 2^{10/3}

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5 0
4 years ago
Find the center and radius of this circle (x+13)^2+(y+2)^2=81
dezoksy [38]

Answer:

center (-13,2)   radius=9

Step-by-step explanation:

(x+13)^2+(y+2)^2=81

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8 0
3 years ago
Determine the perimeter of the triangle to the nearest whole unit .
Monica [59]

Answer:

14

Step-by-step explanation:

To find the perimeter, you need to add the lengths of each side.

In order to find the length of each side, imagine each side of the given triangle is the hypotenuse of an imaginary triage and use the Pythagorean Theorem (a² + b² = c²).

For the top side, I see an imaginary triangle with one side of 3 and the other side of 1. This means the length of the top of the given triange is √10:

3² + 1² = c²

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For the left side, my imaginary triangle has one side of 5 and the other is 1. The length of this side is √26:

5² + 1² = c²

25 + 1 = c²

26 = c²

√26 = c

For the right side, I see a triange with two sides of 4 and the hypotenuse is √32.

This means the triangle in our question has side of √10, √26, and √32

If I add all of these up on a calculator, I get 13.918 which rounds up to 14 because the question wants the nearest whole unit.

8 0
3 years ago
What are the values of x and y?<br> Figure and answers shown below.
pshichka [43]

Answer:

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4 0
2 years ago
Read 2 more answers
Question 3: Marla bought one necklace and two bracelets for $67.50. Use the following information to determine the amount she pa
Lera25 [3.4K]
Each bracelet was approximately 20.25

Here is my work:

67.50 - 27 = 40.5

40.5 divided by 2 = 20.25

Hope this helps!
6 0
3 years ago
Read 2 more answers
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