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Amanda [17]
3 years ago
6

Please help i will mark you brainiest

Mathematics
1 answer:
Ugo [173]3 years ago
4 0

Answer:

1,2,4

Step-by-step explanation:

1: The temperature should be decreasing in an exponential rate as the coffee is hot

2: radioactive element should keep decreasing over years

3: should be increasing rate

4: 'popularity is declining' indicates it's a decay

5: 'growing community' indicated it's increasing

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A3 -4a2+12-3a Factorise ?
Morgarella [4.7K]
STEP-BY-STEP SOLUTION:

= a^3 - 4a^2 + 12 - 3a

= a^2 ( a - 4 ) + 3 ( 4 - a )

= a^2 ( a - 4 ) - 3 ( a - 4 )

= ( a - 4 ) ( a^2 - 3 )

Please mark as brainliest if you found this helpful! : )
Thank you <3
8 0
3 years ago
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in the Pythagorean theorem, the two must always be substituted for the side lengths, not a short side true or false
alina1380 [7]
The two what? This question needs more context
7 0
3 years ago
Số táo của An, Bình, Chi là như nhau. An cho đi 17 quả , Chi cho đi 19 quả thì lúc này số táo của Chi gấp 5 lần tổng số táo còn
soldier1979 [14.2K]

Answer:

So, the initial number of apples is 7.

Step-by-step explanation:

The number of apples of An, Binh, and Chi are the same. An gave away 17 apples, Chi gave away 19 apples, so now Chi's apples are 5 times higher than the total remaining apples of An and Binh. How many apples did each of you have at first? (Solve the above problem by equation or system of equations)

Let the initial numbers of apples is a.

An gave 17 apples

Chi gave 19 apples

So,

x - 19 = 5 (x - 17 + x)

x - 19 = 5 (2x - 17)

x - 19 = 10 x - 85

9 x = 66

x = 7

6 0
3 years ago
Which number property supports your answer
lys-0071 [83]
What is the question
5 0
3 years ago
On Friday, 3/5 of the students wore blue shirts and 1/4 of the students wore white shirts. What fraction of the students wore ei
velikii [3]
Since 3/5 of the students wore blue shirts and 1/4 of the students wore white shirts, you need to find the Total of 3/5 and 1/4.
First, step find a common denominator for both fractions
EXAMPLE: 3/5+1/4=Total 3/5 becomes 12/20 and 1/4 becomes 5/20.
Second, notice that both fractions now have the same denominator, now you can find the sum of both fractions which is 17/20
Finally, you need to check if the fraction can be SIMPLIFIED if not then the fraction is already im simplest form.
THE ANSWER: 17/20 of students wore either a blue or white shirt on Friday

6 0
3 years ago
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