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Aleks [24]
3 years ago
7

To solve the following equation for X, which operation will you need to perform? X + 2 = 5 Question 1 options: Add 2 Subtract 2

Multiply by 2 Divide by 2
Mathematics
2 answers:
ira [324]3 years ago
8 0

Answer:

subtract 2

Step-by-step explanation:

Dimas [21]3 years ago
5 0

Answer: subtract  2

Step-by-step explanation: 5-2=3

3+2=5

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Which information is not necessary to solve this problem? WHO EVER GETS THIS FIRST IS BRAINLIEST
Ad libitum [116K]
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4 0
3 years ago
A w=-8<br> B w=-5 <br> C w=5<br> D w=8
algol [13]

Answer:

D

Step-by-step explanation:

Plug in every scenario, in see if it equal to each other.

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8 0
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A certain prescription drug diminishes in the system at a rate of 25% per hour. If a person was administered 1450mg of the drug,
Helen [10]

9514 1404 393

Answer:

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  • about 20 hours

Step-by-step explanation:

The decay factor is 1 -25% = 0.75 per hour, so the exponential equation can be written ...

  r(t) = 1450·0.75^t . . . . . milligrams remaining after t hours

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About 459 mg will remain after 4 hours.

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b) To find the time it takes before the amount remaining is less than 5 mg, we need to solve ...

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  1450·0.75^t < 5 . . . . use the function definition

  0.75^t < 5/1450 . . . . divide by 1450

  t·log(0.75) < log(1/290) . . . . . take logarithms (reduce fraction)

  t > log(1/290)/log(0.75) . . . . . divide by the (negative) coefficient of t

  t > 19.708

It will take about 20 hours for the amount of the drug remaining to be less than 5 mg.

7 0
3 years ago
Can you subtract closed polynomials
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Answer:

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Step-by-step explanation:

3 0
3 years ago
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Y= 1/3 (x + 4)(x - 2)
Setler79 [48]

Answer:x = -1 +√ 3(3 + y)

Step-by-step explanation: solve the equation for x by finding a, b and c of the quadratic then applying the quadractic formula

7 0
3 years ago
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