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Advocard [28]
2 years ago
9

Given 100 grams of bacteria that decreases at the rate of 1/2 per year. What would be an appropriate range after 4 years

Mathematics
1 answer:
Brilliant_brown [7]2 years ago
8 0

Answer: B 0

Step-by-step explanation:

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The product of two numbers is 240. The first number is 8 less than the second number. Write an equation can be used to find x
DaniilM [7]

Answer:

The equation x = y-8

The equation  (y-8) y = 240

The first number x = 12 and second number y =20

Step-by-step explanation:

<u>Explanation</u>:-

<u>Step(l)</u>:-

Let 'x' be the first number and 'y' be the second number

Given the product of two numbers is 240

Given  data        x y = 240 …(l)

Given data the first number is 8 less than the second number.

                       x = y-8...(ll)

Substitute (ll) in equation (l) , we get

                           (y-8) y = 240

                           y^{2} -8y -240 =0

                            y^{2} -20y+12y -240 =0

                           y(y -20)+12(y -20) =0

                           (y +12)(y -20) =0

                          y = -12 and y = 20

              Y= -12 is not satisfied

              we can choose y = 20

<u>Step(ll):</u>-

Given data x =y-8

  substitute value y = 20 in x = y -8

                                             x = 20-8 = 12

<u>Final answer</u>:-

The first number x = 12 and second number y =20

4 0
3 years ago
Match each justification to its corresponding step in the following solution. (Table shown above)
AveGali [126]

Answer:

D

Step-by-step explanation:

5 0
2 years ago
a coin bank holds nickels, dimes, and quarters. there are 54 coins in the bank and the value of the coins is $4.75. if there are
TEA [102]
Not possible, you know you have to have at least 5 nickels so substract those first, now your at 4.50.  you cant get to 54 coins after that
7 0
3 years ago
The conversion of a temperature from Celsius to Fahrenheit is represented by the expression below, where C is the temperature in
Ainat [17]

Answer:

B.

Step-by-step explanation:

C= 20 degrees Celsius

20 x 9/5 = 180/5

180 divided by 5 = 36 degrees celsius

Then you do 36 degrees celsius + 32 and you get 68.

So therefore 20 degrees celsius is eqivalent to 68 degrees Fahrenheit.

3 0
2 years ago
Read 2 more answers
I need help on this
german

Answer:

No they or not

Step-by-step explanation:

The first on is 60 and the second one is 40

7 0
3 years ago
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