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Yanka [14]
3 years ago
7

Ethan uses the function f(x) = 2x2 + 2x + 4 to track the temperature of a substance over 8 hours. You know that f(3) = 28 meanin

g that the temperature of the substance is 28°C when you plug in a 3 for x. What is the domain of Ethan’s function?
Mathematics
1 answer:
Ne4ueva [31]3 years ago
6 0

Answer: Ethan uses the function f(x) = 2x2 + 2x + 4 to track the temperature of a substance over 8 hours. You know that f(3) = 28 meaning that the temperature of the substance is 28°C when you plug in a 3 for x. What is the domain of Ethan’s function?

Step-by-step explanation: try solving it yourself

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George measured his heart rate after jogging he counted 11 beats are in a six second interval what was the unit rate for George’
alina1380 [7]

Answer:

110beats/minutes

Step-by-step explanation:

we know we have 11 beats every 6 seconds,

that implies that there are 110 beats every 60seconds

and 60secs is a minute

that means 110beats/mins

8 0
3 years ago
The radius of a circle is 4 millimeters. What is the circle's area? Use 3.14 for pi.
viva [34]

Answer:

50.24 mm^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2  where r is the radius

A = 3.14 ( 4)^2

   = 50.24 mm^2

5 0
2 years ago
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Hi guys it's nothing much but please help me out for braniest and 50 points NO LINK'S thank you​
kipiarov [429]

Answer:

Step-by-step explanation:

1) A similar triangle must have the same ratios of sides. Triangle ABC and triangle LNM are similar because all the sides of LNM are 1/2 of the sides of ABC. As they are all in a 1:2 ratio, the triangles are similar.

2) ADE and ABC are similar because each angle is the same. Angle D and Angle B are the same because they are shown as the same with the same dot symbolization. Angle E and C are the same because they are shown as the same with the same curvy angle representation. ADE and ABC share A as the same angle, so all three angles are the same.

5) As triangles ABC and EDC are similar, the sides must have the same ratio. ED is similar to AB, EC is similar to AC, and CD and BC are similar. First we find the ratio. The only pair of similar lines are EC and AC, so we have to find the ratio from those two lines. EC is 15 and AC is 10/3, so we do 15 divided by 10/3 and we get 9/2. Therefore, the ratio is 9/2. Now we can find x and y. We can first look at ED and AB. Ed is 12 and AB is y. We know that it must have the same ratio of 9/2, so 12/y must equal 9/2. We can do proportions. 12/y = 9/2, 9y = 24 (you multiply the numbers diagonally). So, we get y = 8/3. Now we can get x the same way. BC and CD are similar, and so x/5 must equal 9/2 as well. We use proportions again and we have x/5 = 9/2, so 45 = 2x and x = 45/2.

4 0
3 years ago
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The minimum level of inventory needed to meet customer demand is called the
Licemer1 [7]

Answer:

minimum level of stock

4 0
3 years ago
Choose the true statement.<br> 0-2 &lt;-3<br> 0-2&gt;-3<br> 0-2 = -3
Natasha2012 [34]

The true statement is -2>-3

Step-by-step explanation:

The given statement included inequality and comparison symbols. The numbers involved are negative integers.

As the number increases its value decreases which means that -1 will be greater than -2 and so on

Given statement will be discussed one by one

-2 <-3

-2 comes before -3 so the statement is true as -2 will be greater than -3.

-2>-3

The statement is true because -2 is greater than -3

The true statement is -2>-3

Keywords: Comparisons, Inequality

Learn more about inequalities at:

  • brainly.com/question/2670657
  • brainly.com/question/2821386

#LearnwithBrainly

3 0
3 years ago
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