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lys-0071 [83]
3 years ago
6

The temperature on Monday in Minot, North Dakota was 3°F. On Tuesday, the temperature

Mathematics
1 answer:
Doss [256]3 years ago
3 0
Answer:

B

Explanation: If u use a number line you will understand the concept. So it goes 2,1,0,-1,-2. That decreased 5 times.
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Ayúdenme con este ejercicio por favor:(
Fofino [41]

Answer:

De 8 cada aula

Step-by-step explanation:

8 0
4 years ago
A pot of boiling soup with an internal temperature of 100° Fahrenheit was taken off the stove to cool in a 65°F room. After fift
s344n2d4d5 [400]

86.34 minutes was used   to cool the soup to 80 °F

<h3></h3><h3>How can we calculate this using Newton's Law of Cooling?</h3>

Newton's Law of Cooling can be computed as :

T=T1+(T0- T1) e^{kt}

The initial temperature  is been represent by T0 which is  ( 100 F)

The temperature of surrounding  is been given as  (69 F)

The  final temperature  is been given  as  T

t = time

we were told that the temperature of the soup move to  95 F, using  15 minutes.

Hence,  T = 95 F

t = 15 min

Then we can input the values into the above equation as :

95= 69 + (100-69)e^{15k}

if we simplify this , we have

26= 31e^{15k}

Then e^{15k} =0.8387

Then we can find the value of k as :

k= -0.012

Then we have the new equation as

T= 69 + (100-69)e^{-0.012t}

T= 69 + 31e^{15k}

Then at T=80F

we have,

80= 69 + 31e^{15k}

t=86.34

Then if we simplify , we have t=86.34 which implies that  86.34 minutes was used   to cool the soup to 80 °F

Learn more about Newton's Law of Cooling at:

brainly.com/question/17051432

#SPJ1

8 0
2 years ago
Solve 3(a + 3) – 6 = 21. Write a reason for each step.
kakasveta [241]

Answer:

Step-by-step explanation:

3(a+3)-6=21

<=>3a+9-6=21

<=>3a+3=21

<=>3a=18

<=>a=6

7 0
3 years ago
Read 2 more answers
1/2x+4=9 solve for x
Tju [1.3M]

Answer: x=10

Step-by-step explanation: Hope this help :D

5 0
3 years ago
Read 2 more answers
7v=2v-20 what is the answer
Ierofanga [76]
7v = 2v - 20

First, subtract 2v from both sides. / Your problem should look like: 7v - 2v = -20
Second, simplify 7v - 2v to 5v. / Your problem should look like: 5v = -20
Third, divide both sides by 5. / Your problem should look like: v = - \frac{20}{5}
Fourth, simplify \frac{20}{5} to 4. / Your problem should look like: v = -4

Answer: v = -4


7 0
4 years ago
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