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Neko [114]
4 years ago
5

jeffery plans to rent a beach house for his sister's birthday and will use his savings pay for it. The company charges a $25.00

cleaning fee plus $10.00 per hour for the house . if he rents the house for 6 hours, what will be the change in jeffery's saving?
Mathematics
1 answer:
finlep [7]4 years ago
7 0

Answer:

  -$85

Step-by-step explanation:

The charge will be $25 + ($10/h)(6 h) = $25 +60 = $85.

Jeffrey's savings will decrease by $85, so the net change is -$85.

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Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq
lawyer [7]

Answer:

The value of rate of decrease of volume = - 3600 \frac{k pa}{min}

Step-by-step explanation:

According to Boyle's law P V = C ------- (1)

Pressure ( P ) = 100 k pa = 10 \frac{N}{cm^{2} }

Volume ( V ) = 900 cm^{3}

Put these values in equation ( 1 ) we get,

⇒ C = 10 × 900 = 9000 N-cm = 90 N-m

Differentiate Equation ( 1 ) with respect to time we get,

⇒ V \frac{dP}{dt} + P \frac{dV}{dt} = 0

⇒ V \frac{dP}{dt} = - P \frac{dV}{dt}

⇒ \frac{dV}{dt} = - \frac{V}{P} \frac{dP}{dt} ---------- (2)

This equation gives the rate of decrease of volume.

Given that Rate of increase of pressure = \frac{dP}{dt} = 40 \frac{k pa}{min}

C = 90 N-m

P =  10^{5} pa = 10 \frac{N}{cm^{2} }

V = 900 cm^{3}

Put all the above values in equation 2 we get,

⇒  \frac{dV}{dt} = - \frac{900}{10} × 40

⇒  \frac{dV}{dt} = - 3600 \frac{k pa}{min}

This is the value of rate of decrease of volume.

8 0
3 years ago
Determine whether 2x+2y= -6 is a function?
Archy [21]

Answer:

It's a function because when you simplify it becomes y=-x-3. the only reason it wouldn't be a function would be if the equation were to be x = a random number that is not a variable. The equation would not pass the vertical line test which is the requirement to see if an equation is a function.

Simply put, it's a function.

5 0
2 years ago
Read 2 more answers
Find the slope and y intercept of y= -3x - 2
sergejj [24]

Answer:

slope = -3

y-intercept = -2

Step-by-step explanation:

y = mx + <em>b</em>

m = slope; <em>b</em> = y-intercept

y= -3x <em>- 2</em>

m = -3 = slope

<em>b = -2 = y-intercept</em>

4 0
4 years ago
Read 2 more answers
Mr. Ferguson's classroom is 30 ft long, 20 ft wide, and 10 ft tall. There are 3 concrete
Anna [14]

Answer:

they all went to the stairs

Step-by-step explanation:

67.90 I don't know u tell me

6 0
3 years ago
Please answer with steps thank you :)
mart [117]
200×180 =36,000
36,000 / pi (approx 3.14)= 11,459.1559026
4 0
3 years ago
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