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ELEN [110]
3 years ago
8

Christopher is deciding between two landscaping companies for his place of business.

Mathematics
1 answer:
Eddi Din [679]3 years ago
3 0

Answer:

A=30t+200

B=50t+100

The number of hours,t, that would make the cost of each company the same is 5.

30(5)+200= A

  150+200=350

50(5)+100= B

  250+100=350

Step-by-step explanation:

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Naddik [55]

Answer:

M = (3, 3.25)

Step-by-step explanation:

First, using the internal selection formula

Given

m:n = 3:5

(x1,y1) =(0,1)

(x2,y2) =(8,7)

M={[(mx2+nx1)/(m+n)],[(my2+ny1)/(m+n)]}

M = (3, 3.25)

2.

M is the point on XY that is 3/8 of the way from X to Y.

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y-coordinate of M = 1 + (3/8)(6) = 1 + 2.25 = 3.25

So, M = (3, 3.25)

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3 0
2 years ago
What is the decibel level of a dog barking with intensity 10−5 watts per square inch? Use a logarithmic model to solve.
Vsevolod [243]

Answer:

The sound intensity is about 101.9 dB

Step-by-step explanation:

Sound intensity is the amount of sound energy per unit area.

The intensity of the dog bark is 10⁻⁵ W/in². The intensity of sound in decibels is given by:

\beta=10\ dB*log(\frac{I}{I_o} )\\\\Where\ I=Sound\ intensity\ in \ W/m^2, I_o=reference\ sound\ intensity=10^{-12}\ W/m^2\, \beta= sound\ intensity\ in\ dB

I = 10⁻⁵ W/in² = 0.0155 W/m²

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\beta=10\ dB*log(\frac{I}{I_o} )\\\\\beta=10\ dB*log(\frac{0.0155}{10^{-12}} )\\\\\beta=101.9\ dB

The sound intensity is about 101.9 dB

5 0
3 years ago
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