Y=-2x+1y=-2x-3solve and graph

Mathematics

1 answer:

erica [24]4 years ago

6 0

The lines are parallel. There is no solution.

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The temperature, T, of a given mass of gas varies inversely with its Volume,V. The temperature of 98 cm ³ of a certain gas is 28

Naily [24]

Answer:

T₂ = 421.4 K

Step-by-step explanation:

The temperature, T, of a given mass of gas varies inversely with its Volume,V.

$T\propto \dfrac{1}{V}\\\\V_1T_1=V_2T_2$

We have,

V₁ = 98 cm³, T₁ = 28° C = (28+273) K = 301 K

V₂ = 70 cm₃

We need to find the new temperature of the gas. Using the above relation to find T₂.

$T_2=\dfrac{V_1T_1}{V_2}\\\\T_2=\dfrac{98\times 301}{70}\\\\T_2=421.4\ K$

Hence, the required temperature of the gas is 421.4 K.

4 0

3 years ago

Can I get some help?

Step2247 [10]

Answer:

it's C

Step-by-step explanation:

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3 years ago

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Carlos is analyzing the results of a recent scientific study about gravity. Scientists recorded that the experimental value of g

ASHA 777 [7]

Answer:

The answer is 4.38.

Step-by-step explanation:

You take the experimental value and subtract the accepted value from it. then take that and divide it by the accepted value. When you get your you move the decimal point and round if needed.

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3 years ago

Marlow is comparing the prices of two truck rental companies. Company A charges $3 per hour and an additional $75 as service cha

vichka [17]

[Part A]

company A                company B
A=3h+75                    B=2h+85

definition of variables
A=company A
B=company B
h=number of hours used

[Part B]
company A would charge less for 5 hours

justification
company A                 company B
A=3(5)+75                   B=2(5)+85
A=15+75                     B=10+85
A=90                           B=90

[Part C]
By using the services of company A instead of company B to rent a truck for three hours you save 7 dollars.
company A: A=3(3)+75 = 9+75= 84
company B: B=2(3)+85 = 6+85 = 91
difference: 91-84= 7

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3 years ago

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A rectangular piece of cardboard that is 7 inches by 20 inches has squares of length x inches on a side cut from each corner.

adoni [48]

Answer:

The remaining area in the form of a polynomial function $A(x)= 140-4x^2$ where 0 < x < 3.