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3 years ago

11

ms. groves has trays of paints for students in her art class. each tray has 5 colors. one of the colors is purple. what fraction

of the colors in 20 trays is purple?

1 answer:

Aleks [24]3 years ago

8 0

Answer:

5/100 or 1/20

Step-by-step explanation:

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Why is 1 + (−5) equal to −4? (1 point)

Dafna11 [192]

I'm pretty sure it's D

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3 years ago

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15 minus the product of 5 times the difference of p minus 6

m_a_m_a [10]

Written just as an expression it would be:

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2 years ago

If a cup of coffee has temperature 97Â°C in a room where the ambient air temperature is 25Â°C, then, according to Newton's Law o

FinnZ [79.3K]

Answer:

The average temperature is $T_{a} = 81.95^oC$

Step-by-step explanation:

From the question we are told that

The temperature of the coffee after time t is $T(t) = 25 + 72 e^{[-\frac{t}{45} ]}$

Now the average temperature during the first 22 minutes i.e fro $0 \to 22$ minutes is mathematically evaluated as

$T_{a} = \frac{1}{22-0} \int\limits^{22}_{0} {25 +72 e^{[-\frac{t}{45} ]}} \, dx$

$T_{a} = \frac{1}{22} [25 t + 72 [\frac{e^{[-\frac{t}{45} ]}}{-\frac{1}{45} } ] ] \left| 22} \atop {0}} \right.$

$T_{a} = \frac{1}{22} [25 t - 3240e^{[-\frac{t}{45} ]} ] \left | 45} \atop {{0}} \right.$

$T_{a} = \frac{1}{22} [25 (22) - 3240e^{[-\frac{22}{45} ]} - (- 3240e^{0} )]$

$T_{a} = \frac{1}{22} [550 - 1987.12 + 3240]$

$T_{a} = 81.95^oC$

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2 years ago

X -y =-4 -2x + 3y = 6

hoa [83]

Answer:

y=-2

x=-6

Idk if it's right

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3 years ago