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ddd [48]
3 years ago
9

each week, Jennifer saves 1/5 of her allowance and spends some of the rest on lunches. this week, she had 2/15 of her allowance

left after buying her lunch every day. what fraction of her allowance did she spend on lunches?
Mathematics
1 answer:
lutik1710 [3]3 years ago
7 0

Answer:

3%%%%+<+<&+788>,,jjajahjahajiijbbsnsjiaja

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A bacteria culture starts with 1000 bacteria and the number doubles every 40 minutes. (a) find a formula for the number of bacte
vfiekz [6]

The formula for the number of bacteria at time t is 1000 x (2^t).

The number of bacteria after one hour is 2828

The number of minutes for there to be 50,000 bacteria is 324 minutes.

<h3>What is the number of bacteria after 1 hour?
</h3>

The exponential function that can be used to determine the number of bacteria with the passage of time is:

initial population x (rate of increase)^t

1000 x (2^t).

Population after 1 hour : 1000 x 2^(60/40) = 2828

Time when there would be 50,000 bacteria : In(FV / PV) / r

Where:

  • FV = future bacteria population = 50,000
  • PV = present bacteria population = 1000
  • r = rate of increase = 100%

In (50,000 / 1000)

In 50 / 1  = 3.91 hours x 60 = 324 minutes

To learn more about exponential functions, please check: brainly.com/question/26331578

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5 0
1 year ago
Brown has own bakery he baked 5 cakes per day due to occasional christmas story to be in the whole christmas week how many cakes
Lena [83]
she would make 35 cakes
8 0
3 years ago
3<br> Select the correct answer.<br> What are the solutions to this equation?<br> 16x² + 9 = 25
Charra [1.4K]

Answer:

Step-by-step explanation:

16x^2 + 9 = 25

16x^2 = 16

x^2 = 1

x = 1, -1

4 0
3 years ago
Question 6 (1 point)
Shalnov [3]
2. Dividing exponential expression with the same base is what the left hand fractional expression is. Z^8/Z^?=z^6. Since all the bases are the same. To get the exponential power 6 on the right we subtract the denominator’s (bottom part of the fraction) exponential power (on the left) from the numerator’s (top part) exponential power.

Then, 8 - ? = 6? 2 is the only number to make the left equal the right side. This, z^8/z^2=z^6
8 0
3 years ago
Which expression represents the product of negative three-fourths x and –8x?
den301095 [7]

Answer:

6x²

Step-by-step explanation:

-\frac{3}{4} x\times \left( -8x\right)  =\frac{3}{4} x\times 8x

                     =\frac{3}{4} \times 8\times x\times x          

                     =\frac{24}{4} \times x^{2}

                     =6x^2

7 0
2 years ago
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