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Vika [28.1K]
3 years ago
13

Help fast I’m giving 20 points’ The number of bacteria in a petri dish is 42 and is tripling every month

Mathematics
2 answers:
nadya68 [22]3 years ago
7 0

Answer:

its 1944

Step-by-step explanation:

i just took the test

N76 [4]3 years ago
5 0

Answer:

3402

Step-by-step explanation:

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Trey runs each lap in 6 minutes. He will run at least 30 minutes today. What are the possible numbers of laps he will run today?
vlada-n [284]

Answer:

5 laps

Step-by-step explanation:

30 ÷ 6 = n

n=5

8 0
2 years ago
A car moved at a speed of 90km/hr for 3 minutes.What distance did it cover?​
aniked [119]

Answer:

270kilometers

Step-by-step explanation:

To find the distance, all you have to do is the speed · time

In these types of distance time and word problems, you multiply the other factors, 90 and 3, The time(T) · The speed(S)

So. 90(S) · 3(T) = 270(D)

5 0
3 years ago
Please help me thanks please <br> Will give you brainlest
Akimi4 [234]

Answer:

224

Step-by-step explanation:

<u>Base:</u>

A = Bh

A = 8(8) = 64

<u>Sides:</u>

A = 1/2 Bh

A = 1/2 8(10)

A = 40

<u>Then you do 40(4) because there are 4 sides:</u>

40 (4) = 160

<u>Then you add up the base and the sides:</u>

160 + 64 = 224

(I think this is the right answer)

7 0
2 years ago
PLZ HELP, DUE TONIGHT!! Find the values of a and b such that f(x) is continuous at x=1
Sedaia [141]

Answer:

  • a = 2, b = -4

Step-by-step explanation:

<u>To make the given piecewise function continuous we need:</u>

  • ax² - b = 6 and 5ax + b = 6 at x = 1

<u>It gives us the system:</u>

  • a(1²) - b = 6 ⇒ a - b = 6
  • 5a(1) + b = 6 ⇒ 5a + b = 6

<u>Sum of the two:</u>

  • a - b + 5a + b = 6 + 6
  • 6a = 12
  • a = 2

<u>Then b is:</u>

  • 2 - b = 6
  • b = -4
6 0
3 years ago
Safari isn’t helping so plz help!!
aleksandr82 [10.1K]

Answer:

f(x)=2 cos(x)-1

Step-by-step explanation:

that is the answer

6 0
3 years ago
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