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slega [8]
3 years ago
15

Mr. Parker wants to draw a floor plan of his office, which measures 15 feet wide by 17.5 feet long. He is using the scale

Mathematics
2 answers:
timofeeve [1]3 years ago
7 0
The width of his office on the floor plan is 2.5 in. so it would be B
bagirrra123 [75]3 years ago
3 0

Answer:

B is correct

Step-by-step explanation:

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A=12 B=5 C=2 if you help your maked as the brainest
Afina-wow [57]
C^2+(2/3)
2^2+(2/3)
4+(2/3)
4 2/3

Final answer: 4 2/3 or 14/3 as an improper fraction
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pav-90 [236]

Answer: I think A 1,220 (I'm not sure)

Step-by-step explanation:

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igomit [66]

84 is 60% of 140!

To get this answer, you have to do 84 x 100 and you get 8400: Then you divide 8400 by 60 and get 140.

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3 years ago
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Find a linear second-order differential equation f(x, y, y', y'') = 0 for which y = c1x + c2x3 is a two-parameter family of solu
Alisiya [41]
Let y=C_1x+C_2x^3=C_1y_1+C_2y_2. Then y_1 and y_2 are two fundamental, linearly independent solution that satisfy

f(x,y_1,{y_1}',{y_1}'')=0
f(x,y_2,{y_2}',{y_2}'')=0

Note that {y_1}'=1, so that x{y_1}'-y_1=0. Adding y'' doesn't change this, since {y_1}''=0.

So if we suppose

f(x,y,y',y'')=y''+xy'-y=0

then substituting y=y_2 would give

6x+x(3x^2)-x^3=6x+2x^3\neq0

To make sure everything cancels out, multiply the second degree term by -\dfrac{x^2}3, so that

f(x,y,y',y'')=-\dfrac{x^2}3y''+xy'-y

Then if y=y_1+y_2, we get

-\dfrac{x^2}3(0+6x)+x(1+3x^2)-(x+x^3)=-2x^3+x+3x^3-x-x^3=0

as desired. So one possible ODE would be

-\dfrac{x^2}3y''+xy'-y=0\iff x^2y''-3xy'+3y=0

(See "Euler-Cauchy equation" for more info)
6 0
3 years ago
Three numbers have a sum of 82. The second number is twice the first number. The third number is 7 more than the second number.
iVinArrow [24]

Answer: The number is 15

Step-by-step explanation: basically the equation you should solve is

(x)+(2x)+(2x+7)=82

5x+7=82

5x= -7+82

5x=75

5/5x=75/5

x=15

3 0
3 years ago
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