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hodyreva [135]
3 years ago
10

Help me plz ASAP!! Will mark Brainliest if you figure it out! 10 points!

Mathematics
2 answers:
Sidana [21]3 years ago
6 0

Answer:

60 persent

Step-by-step explanation:

because i also do study island

and i already did that leasonn

sweet-ann [11.9K]3 years ago
5 0

Answer:

60%

Step-by-step explanation:

18,000 / 8% = 1440

1,440 + 2,400 = 3,840

1,440 / 2,400 = 0.60

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KATRIN_1 [288]

Answer:

25

Step-by-step explanation:

20 books in 4 months is 5 books in 1 month.

20÷4=5

4÷4=1

1×5=5

5×5=25

7 0
3 years ago
In the expression 5x6 + 3xy − 7yz2 + , which of the following choices is the exponent in the term 5x6?
Bond [772]

Answer:

The exponent is 6.

Basically, the term 5x^6 is asking you to raise 'x' to the 6th power (the exponent) and then multiply it by 5.

Step-by-step explanation:

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3 years ago
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Dmitry_Shevchenko [17]
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8 0
4 years ago
11. The completion of a chemical reaction is expressed by the equation y = 300 - 4x - XP, where y is
alina1380 [7]

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
I tried but kept getting it wrong ;-;<br>Find the area of the composite figure.​
Aneli [31]

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7 0
3 years ago
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