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Katen [24]
3 years ago
5

Estimate 39 times 24 A. 8000 B. 14000 C. 800 D. 1400

Mathematics
2 answers:
Allushta [10]3 years ago
7 0
800, bc 39 times 25 is 936 and 800 is closer to 936
valentinak56 [21]3 years ago
4 0
Thad awnser is C= 800
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A solid object is dropped into a pond with a temperature of 20 degrees Celsius. The function f(t)=Ce(−kt)+20 represents the situ
LenaWriter [7]

Answer:

The initial temperature of the object was 37.6 degrees Celsius

The initial temperature of the object was 37.6 (without units)

Step-by-step explanation:

we have

f(t)=Ce^{(-kt)} +20

where

f(t) represent the temperature of the object in degree Celsius

t is the time in minutes

<em>Find the value of the constant C</em>

we have the ordered pair (4,35)

substitute in the equation and solve for C

35=Ce^{(-0.0399*4)} +20

Ce^{(-0.0399*4)}=15

C=15/e^{(-0.0399*4)}

C=17.6

Find the initial value of the object

we know that

The initial temperature is the value of f(t) when the value of t is equal to zero

so

For t=0

f(0)=(17.6)e^{(-k*0)} +20

f(0)=17.6 +20

f(0)=37.6\ degrees\ Celsius

therefore

The initial temperature of the object was 37.6 degrees Celsius

The initial temperature of the object was 37.6 (without units)

3 0
3 years ago
Evaluate the surface integral S F · dS for the given vector field F and the oriented surface S. In other words, find the flux of
zubka84 [21]
V is the 3D region enclosed by S. 

div(F)= <span>∂(x)/∂x + ∂(y)/∂y + ∂(10)/∂z = 2 
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<span>∫ = ∫∫∫ [V] div(F) dV = 2 ∫∫∫ [V] dV 

Using cylindrical coords, ( rcos(θ), y, rsin(θ) ), dV=rdrdθdy 

∫ = 2 ∫∫∫ rdrdθdy, [r=0,1], [θ=0,2π], [y=0,7−rcos(θ)] = 14π (easily integrated)</span><span>
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7 0
3 years ago
Read 2 more answers
What is the surface area of the rectangular prism? <br><br> PLSSS HELP GUYS I NEED HELP ASAP
tatyana61 [14]

Answer:

348 ignore this eoendndisiwjd

5 0
3 years ago
1+1 show explanation
Snezhnost [94]

Answer:

1+1 = 2

1+1 = Window

1+1 = 11

Step-by-step explanation:

For solution One: get one apple. Then another apple. Finally u will have 2 apples

For the second solution: imagine the no. 1, just a straight line. 1+1 with the equal sign, one line on top/one line on bottom. Forms a window.

For the third solution: Simply add the digits together by removing the + between the numbers.

8 0
3 years ago
A store spends 30% of its budget on maintenance. its yearly budget is $150,000.how much is spent on maintenance?
joja [24]

It would be: 150,000*0.30 = 45000

so, your answer is $45,000

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3 years ago
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