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7nadin3 [17]
4 years ago
10

Find y.............​

Mathematics
2 answers:
sattari [20]4 years ago
7 0

Answer:

We know angle y = 78 degrees

Step-by-step explanation:

y and 78 are alternate exterior angles.  Alternate exterior angles are equal if the lines are parallel. AB is parallel to CD  so y = 78

Natasha_Volkova [10]4 years ago
3 0
<h3>Answer: y = 78</h3>

==================================

Justification #1: Angle x is 78 degrees as these two angles are corresponding angles (congruent due to the parallel lines). We also know that y = x because they are vertical angles. So by the transitive property, y = 78

Justification #2: The parallel lines mean that the alternate exterior angles are congruent, so y = 78 through one step (instead of multiple steps in the prior justification)

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bagirrra123 [75]

Answer:

B. 3408pi

Step-by-step explanation:

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volume = 1/3 x pi x 12 x 12 x 71

= 3408pi

3 0
3 years ago
The pressure and volume of an expanding gas are related by the formula PV^b=C, where b and C are constants (this holds in adiaba
bazaltina [42]

The dP/dt of the adiabatic expansion is -42/11 kPa/min

<h3>How to calculate dP/dt in an adiabatic expansion?</h3>

An adiabatic process is a process in which there is no exchange of heat from the system to its surrounding neither during expansion nor during compression

Given b=1.5, P=7 kPa, V=110 cm³, and dV/dt=40 cm³/min

PVᵇ = C

Taking logs of both sides gives:

ln P + b ln V = ln C

Taking partial derivatives gives:

\frac{1}{P}\frac{∂P}{∂t}  + \frac{b}{V}\frac{∂V}{∂t} = 0

Substitutituting the values b, P, V and dV/dt into the derivative above:

1/7 x dP/dt +  1.5/110 x 40 = 0

1/7 x dP/dt +  6/11 = 0

1/7 x dP/dt = - 6/11

dP/dt = - 6/11 x 7

dP/dt = -42/11 kPa/min

Therefore, the value of  dP/dt is -42/11 kPa/min

Learn more about adiabatic expansion on:

brainly.com/question/6966596

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4 0
1 year ago
which are the roots of the quadratic function f(b) = b2 – 75? check all that apply. b = 5 square root of 3 b = -5 square root of
malfutka [58]
<span>The answers are b = 5 square root of 3; b = -5 square root of 3. f(b) = b^2 – 75. If f(b) = 0, then b^2 – 75 ) 0. b^2 = 75. b = √75. b = √(25 * 3). b = √25 * √3. b = √(5^2) * √3. Since √x is either -x or x, then √25 = √(5^2) is either -5 or 5. Therefore. b = -5√3 or b = 5√3.</span>
8 0
3 years ago
Read 2 more answers
Please help
algol13
Equation: 17 + x = 23
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x = 6
8 0
3 years ago
Read 2 more answers
An equation with an exponent is called an exponential equation. True False
lyudmila [28]

Answer:

true

Step-by-step explanation:

7 0
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