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Allushta [10]
3 years ago
9

A scientist is growing two species of bacteria. She defines a variable t that represents the number of days after the growth beg

ins. The number of bacteria after t days is defined by: Species A: y=1000∙2^(t/3)
Species B: y=1000∙2^3t
(a) how many bacteria does each species start out with?
Mathematics
1 answer:
ycow [4]3 years ago
6 0
I want to know the answer
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The cost of strawberries if they are $2 per pound the subject is translating expressions ​
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Answer:

2(equation)

Step-by-step explanation: multiply the equation by 2 to get the price

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3 years ago
Select the correct answer from the drop down menu,
Nimfa-mama [501]

11 and 12

Step-by-step explanation:

The square root of 125 is between 11 x 11 = (121) and 12 × 12 = (144)

5 0
3 years ago
Joseph needs to drive 42 miles. They were going to drive at a certain average speed, but if they drive 10 mph faster, the trip w
Sholpan [36]

Answer:

The speed is 60 mph.

Step-by-step explanation:

distance = 42 miles

Let he drove with speed v and time is t.

distance = speed x time

42 = v t ..... (1)

42 = (v + 10)(t - 1/10) ..... (2)

42 = 42 -\frac{v}{10}+ 10 t - 1\\\\t =\frac{10+v}{100}\\\\Put in (1)\\\\42 = \frac{v(10+v)}{100}\\\\v^2 + 10 v - 4200 = 0 \\\\v  = \frac{-10\pm \sqrt{100+4\times 4200}}{2}\\\\v =\frac{- 10 \pm 130}{2}\\\\v =- 70 mph, 60mph

So, the speed cannot be negative so the speed is 60 mph.

7 0
3 years ago
Y varies directly as the square of x when x=2 then y =16 find y when x=8
Leviafan [203]

Answer:   y= 64  

Step-by-step explanation:

If y is 16 when  x is 2  This means if  x is 8 y will be 64.

Set up the proportional equation

\frac{2}{16}  = \frac{8}{y}     Cross multiply  

2y = 128

y= 64

8 0
3 years ago
A shopkeeper bought two watches for rs. 400.he sold them to gain 5 percent on one and lose 5 percent on the other .calculate his
Anarel [89]

The final loss percent is 0.25%.

<h3>What is the final loss percent?</h3>

The gap between the cost price and the selling price is what is referred to as a loss. And the loss percent is the loss as a percentage of the actual cost.

Total CP=Rs. 400

Let the CP of the first watch be Rs. x

So, CP of the second watch=Rs.(400-x)

For the first watch,

Gain Percent=5%

SP = (1+\frac{5}{100})*x

SP=105x/100

For the second watch,

Loss Percent=5%

SP=(1-\frac{5}{100})(400-x)

SP=95(400-x)/100

As the SP of both the watches is the same.

\frac{105}{100}x=\frac{95}{100}(400-x)

105x=38000-95x

105x+95x=38000

200x=38000

x=38000/200

x=190

CP of the first watch=Rs. 190

CP of the second watch=Rs. (400-190)=Rs. 210

SP of first watch=\frac{105}{100}*190 =Rs. 199.50

SP of second watch=\frac{95}{100}*210=Rs. 199.50

Total SP=Rs. 399

Final Loss=Total CP-Total SP

                =Rs.(400-399)

                =Rs. 1

Final Loss Percent=100/400

                              =0.25%

Learn more about loss percent here:

brainly.com/question/762291

#SPJ4

8 0
2 years ago
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