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OLga [1]
3 years ago
15

How do I solve this

Mathematics
1 answer:
ch4aika [34]3 years ago
3 0
For all real numbers, except zero, a x 1/a = 1

Multiplying any real number by it’s reciprocal will result in 1.
This is why a reciprocal of a number is called it’s multiplicative inverse.

The reciprocal of zero is 1/0 and is undefined because dividing by zero is not valid.
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Don't do for points.<br><br> Don't get your account banned.<br><br> Don't be me
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The last option 9,000
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3 years ago
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A radioactive compound with mass of 260 grams decays at a rate of 3.8% per hour. Which equation represents how many grams of the
Dahasolnce [82]

The exponential equation that represents how many grams of the compound will remain after 8 hours is:

B: C=260(0.962)^8

<h3>What is an exponential function?</h3>

A decaying exponential function is modeled by:

A(t) = A(0)(1 - r)^t

In which:

  • A(0) is the initial value.
  • r is the decay rate, as a decimal.

A radioactive compound with mass of 260 grams decays at a rate of 3.8% per hour, hence the equation for the mass after t hours is given by:

A(t) = 260(1 - 0.038)^t

A(t) = 260(0.962)^t

After 8 hours, the amount is given by:

A(t) = 260(0.962)^8

Hence option B is correct.

More can be learned about exponential equations at brainly.com/question/25537936

7 0
2 years ago
In ΔIJK, i = 180 cm, ∠J=89° and ∠K=38°. Find the length of k, to the nearest 10th of a centimeter.
vodka [1.7K]

Answer:

138.8 cm

Step-by-step explanation:

Angle I =180 - 89 - 38 = 53

Using sine law

i/sinI = k/sinK

180/sin53 = k/sin38

k = 138.76

6 0
4 years ago
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What is the angle of C?
soldier1979 [14.2K]

Answer:

50°

Step-by-step explanation:

65 + 65 +C = 180

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3 0
3 years ago
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Pls help me and thank ya!!
algol13

Answer:

Option 1

Step-by-step explanation:

Rational numbers do not have infinite decimals.

Option 1:

-5, 3/4 and √49 are all rational. Correct

√49 = 7

3/4 = 0.75

-5 = -5

Option 2:

1/4 = 0.25

5 = 5

√12 = 3.4641...

Incorrect

Option 3:

-1/2 = -0.5

-3 = -3

√8 = 2.82841...

Incorrect

Option 4:

1/7 = 0.142857...

9 = 9

√11  = 3.31662...

Incorrect

5 0
3 years ago
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