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Margarita [4]
4 years ago
15

69 3/10 % converted to a decimal

Mathematics
2 answers:
Naya [18.7K]4 years ago
6 0
The answer would be 69.3 

Explanation:
The answer is 69.3 because when you convert a percentage to a decimal, you always drag the decimal point 2 values down. This would make the number 69.03. But since the 3 was over 10 in the fraction, all you have to do is multiply 3 by 10 in which would make it's value go up by 10, making the decimal point move right 1 unit. This will give you the end result or solution: 69.3
Solnce55 [7]4 years ago
5 0
I think it might be 69.3
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The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T min
Maslowich

Answer:

67.3°C

Step-by-step explanation:

A = 25, T(0) = 100, T(1) = 90, find T(4)

dT/dt = -k(T - A)

d(T - A)/dt = -k(T - A)

d(T - A)/(T - A) = -k dt

ln(T - A) = lnC - kt

T(t) -A=Ce^{-kt}\\T(t) = A + Ce^{-kt} = 25 + Ce^{-kt}\\T(0) = 25 + C = 100\\C=75

T(t) = 25 + 75e^{-kt}\\T(1) = 25 + 75e^{-k} = 90\\75e^{-k} = 65\\e^{-k} = \frac{65}{75}, k = ln\frac{75}{65} = 0.1431\\T(t) = 25+75e^{-0.1431t}\\T(4) = 25+75e^{-0.1431\times4} = 67.3

4 0
3 years ago
kahal solved the inequlity 4x-4>20. his work is shown below. step 1: 4x-4>20 step 2: 4x>16 step 3: x>4 where did kah
Karo-lina-s [1.5K]

Kahal made an error in step 1 in his calculation.

Step-by-step explanation:

Inequality solved by Kahal;

4x-4>20

Steps used by Kahal

step 1: 4x-4>20

step 2: 4x>16

step 3: x>4

Kahal made mistake in first step where he subtracted 4 from 20. because to eliminate 4 we will add 4 on both sides which will make;

Step 1: 4x-4+4 > 20+4

4x>24

Thus,

Kahal made an error in step 1 in his calculation.

Keywords: inequality, addition

Learn more about addition at:

  • brainly.com/question/11150876
  • brainly.com/question/11175936

#LearnwithBrainly

7 0
3 years ago
Find the difference 2/3 and -3/4
astra-53 [7]
The answer would be -1/12 .
2/3 - -3/4=-1/12
2/3=8/12
-3/4=-9/12
8/12- -9/12=-1/12
5 0
4 years ago
Read 2 more answers
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kvasek [131]

Answer:

why is the paper wet….

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
I really need help with this please!!
babunello [35]
J)x^2 +2x +yx+2y-5x-10
x^2-3x+yx-10

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