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nadezda [96]
4 years ago
6

the temperature is already at 40 degrees it rises 4.5 degrees per minute how long will it take to get to 76 degrees​

Mathematics
1 answer:
Andrei [34K]4 years ago
7 0

Answer:

It will take 8 minutes for the temperature to reach 76°

Step-by-step explanation:

The expression for the total temperature in degrees at time t can be written as;

T=I+EM

where;

T=total temperature

I=initial temperature

E=temperature increase per minute

M=number of minutes

This can also be written as;

total temperature=initial temperature+temperature increase per minute×number of minutes

In our case;

T=76°

I=40°

E=4.5°

M=m

replacing;

76=40+(4.5×m)

4.5 m=76-40=36

(4.5 m)/4.5=36/4.5

m=8

It will take 8 minutes for the temperature to reach 76°

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3 years ago
What are the solutions to the quadratic equation? x2 2 + 3x - 10 = 0
FrozenT [24]

Answer:

2 and -5

Step-by-step explanation:

x2 + 3x - 10 = 0

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Which number sentence is true? O A) 2.3 x 102 > 2000 OB) 3.45 > 1-4.35| OC) 345 > 5:33 825 OD 13​
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Answer:

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Step-by-step explanation:

the value for -2.14 is as plain as you can see, the negative version of 2.14.

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7 0
3 years ago
A cinema has three screens last Saturday there were 500 visitors 40% went to screen 1 ,25% went to screen 2 the rest went to scr
ratelena [41]

Answer:

200 visitors went to screen 1.

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Step-by-step explanation:

We will find number of visitors who went to screen 1 by finding 40% of 500 as we are told that 40% of 500 visitors went to screen 1.

500*\frac{40}{100} =5*40=200

Therefore, 200 visitors went to screen 1.

Now we will find number of visitors who went to screen 2. We are told that 25% of 500 visitors went to screen 2.

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Therefore, 125 visitors went to screen 2.

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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