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serious [3.7K]
2 years ago
11

Mabel worked 6 hours yesterday and 0.57 hour today. How many hours total did she work?

Mathematics
2 answers:
Salsk061 [2.6K]2 years ago
3 0

Answer:

She earns $246 each week.

hope this helps!!

AlexFokin [52]2 years ago
3 0

Answer:

6.57 hours

Step-by-step explanation:

6.00 + 0.57= 6.57 hours

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3 years ago
A rubber of length 89m is cut into 3 equal pieces. What is the length of each piece?​
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Water whose temperature is at 100∘C is left to cool in a room where the temperature is 60∘C. After 3 minutes, the water temperat
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Answer:

21.68 minutes ≈ 21.7 minutes

Step-by-step explanation:

Given:

T=60+40e^{kt}

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T = 100°C

Final temperature = 60°C

Temperature after (t = 3 minutes) = 90°C

Now,

using the given equation

T=60+40e^{kt}

at T = 90°C and  t = 3 minutes

90=60+40e^{k(3)}

30=40e^{3k}

or

e^{3k}=\frac{3}{4}

taking the natural log both sides, we get

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or

3k = -0.2876

or

k = -0.09589

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substituting k in 1 for time at temperature, T = 65°C

65=60+40e^{( -0.09589)t}

or

5=40e^{( -0.09589)t}

or

e^{( -0.09589)t}=\frac{5}{40}

or

e^{( -0.09589)t}=0.125

taking the natural log both the sides, we get

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or

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or

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3 years ago
Is the ordered pair (-8,-7) a soulution to the equation 3x+10=2y
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Answer:

yes

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To determine if (- 8, - 7 ) is a solution to the equation

Substitute the values of x and y into the equation and if both sides are equal then it is a solution.

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Since both sides are - 14 then (- 8, - 7 ) is a solution to the equation.

8 0
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