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Rudik [331]
3 years ago
5

Scientists can estimate the number of bacteria in a refrigerated food using the formula 0.26=

Mathematics
1 answer:
monitta3 years ago
3 0

Time is C. 50 seconds

Step-by-step explanation:

The population of bacteria at time t here is given by

0.2b=\frac{t^2}{20}

where

b is the number of bacteria

t is the time in seconds

Here we want to find the approximate time at which the number of bacteria is

b = 625

Substituting into the equation and solving for t, we find:

t^2=20\cdot 0.2 b\\t=\sqrt{4b}=\sqrt{4\cdot 625}=50 s

Therefore, the solution is

C. 50 seconds

Learn more about population growth:

brainly.com/question/10689103

#LearnwithBrainly

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Find the shorter base of a trapezoid if the trapezoid's area is 52, its altitude is 8, and its longer basis 10.
DiKsa [7]

Answer:

The shorter base is 3

Step-by-step explanation:

a =  \frac{(b1 + b2)}{2}  \times h

52 =  \frac{(10 + b2)}{2}  \times 8

b2 = 3

8 0
3 years ago
show me how to work this problem, point A(7,9)is dilated from the origin by scale factor r was= 6. what are the coordinates of p
frutty [35]

If the point is dilated from the origin by a scale factor of 6

Then the coordinates of point A becomes

A( 6x7 , 6x9)

A_{0,6}(7,9)=(42,\text{ 54)}

6 0
1 year ago
The area of the triangle below is 6.12 square feet. What is the length of the base?
Amanda [17]

Answer: 3.6

Step-by-step explanation:

½bh = 6.12

½ × 3.4 × b = 6.12

b = 6.12/ 1.7

4 0
2 years ago
What are the answers to these i put them in the picture
tekilochka [14]
The problem to number 1 is a inequality, so
x-2<-7
x<-5
since it is < it will have open dot.
Answer:  C

2.  x/3>-3
      x>-9

Answer: D

3.  5p+26<72
                5p<46
                 p<9.2

Answer: C

4.  -3w+3>=18
      -3w>=15
       x<=-5

5. 15x-21>= 12x+18
        x>=13
Answer A

6:  |3x|=15
Absolute values positive so {-5,5}
Answer: B
7: |2x-3|=5
    x=4,-1
Answer:  C
8 0
3 years ago
Richard walks 1 kilometer in 12 mins how many does he walk in a hour
gladu [14]
He would have walked 5 kilometers because 12 goes into 60 5 times
4 0
3 years ago
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