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victus00 [196]
3 years ago
5

A bar of metal is cooling from 1000°C to room temperature, 24°C. The temperature, H, of the bar t minutes after it starts coolin

g is given, in oc, by H = 24 + 976e-0.1t
(a) Find the temperature of the bar at the end of one hour. (Round your answer to the nearest degree.)
(b) Find the average value of the temperature over the first hour. (Round your answer to the nearest degree.)
(c) Is your answer to part (b) greater or smaller than the average of the temperatures at the beginning and the end of the hour? The answer to part (b) isecthan the average of the temperatures at the beginning and the end of the hour, because the graph is concave
Mathematics
1 answer:
motikmotik3 years ago
7 0

Answer:

ggfddv3=4

Step-by-step explanation:

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Answer:

5/8 cm

Step-by-step explanation:

5/2*3/4=15/8

15/8*1/3=15/24=5/8

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Step-by-step explanation:

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Solve for y Please help I need a tip
Gwar [14]

Answer:

y = 4

Step-by-step explanation:

Step 1: Write equation

9/4y - 12 = 1/4y - 4

Step 2: Solve for <em>y</em>

  1. Subtract 1/4y on both sides: 8/4y - 12 = -4
  2. Simplify: 2y - 12 = -4
  3. Add 12 to both sides: 2y = 8
  4. Divide both sides by 2: y = 4

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

9/4(4) - 12 = 1/4(4) - 4

9 - 12 = 1 - 4

-3 = -3

4 0
3 years ago
In triangle ABC, the measure of ∠B is 90°, BC=16, and AC=20. Triangle DEF is similar to triangle ABC, where vertices D, E, and F
nevsk [136]
The third side of triangle ABC is AB. Using the Pythagorean Theorem, its length is 12. 
12² + 16² = 20² 

∠F is congruent to ∠C and so the sin(∠F) = sin(∠C) 

The sin(∠C) = opposite/hypotenuse 
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= 12/20 
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Answer: 
Yes, it is 0.6
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A rectangular lot is 145 yards long and 100 yards wide.
mr_godi [17]

Answer:

150 by 100

Step-by-step explanation:

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