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lora16 [44]
3 years ago
10

John went to a friend’s house to spend his free time in an evening. Which unit of measure should be used to find the distance be

tween the two houses?
A. milliliters
B. tons
C. kilograms
D. miles
Mathematics
1 answer:
asambeis [7]3 years ago
4 0

Answer:

miles

Step-by-step explanation:

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Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.                                          

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

y = 300 - 4x -x^2

where y is  the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius  at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

160 = 300 - 4x -x^2\\x^2 + 4x  - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

5 0
3 years ago
Which value would make the statement true? 2/? is greater than 4/12 ? A.4 B.6 C.12 D.24
Liula [17]

Answer:

A.4

Step-by-step explanation:

Because 4/12 is simplified to 1/3 and 2/4 would be simplified to 1/2. 1/2 > 1/4

6 0
3 years ago
Bill has 15 fewer cards than joe . write an expression to find how many cards bill has... ???
Ganezh [65]
15 - 1 = x thats the answer to the problem thats how you can have the answer
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Step-by-step explanation:

Solution is where two lines intersect

Both lines intersect at x = 5 and y = 3

Answer

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