Answers
Answer:
d) 2x+10
Explanation:
Question:-
Which of the following expressions is equivalent to the expression 2(x + 5)?
- x + 7
- x + 10
- 2x + 5
- 2x + 10
Answer:-
- 2x+10
Explanation:-
take 2 as common from both the terms :-
Hope u got what u were looking for
Related Questions
The actual depth of a shallow pool 1.00 m deep is not the same as the apparent depth seen when you look straight down at the pool from above. How deep (in cm) will it appear to be
An internal explosion breaks an object, initially at rest,intotwo pieces, one of which has 1.5 times the mass of the other.If7500 J were released in the explosion, how much kinetic energydideach piece acquire?
Which state of matter is most similar to solids
A projectile is shot at an angle 45 degrees to the horizontalnear the surface of the earth but in the absence of air resistance.When it reaches the highest point of its trajectory, its speed is150 m/s. In a second trial with the same projectile, the initialspeed is the same but the angle is now 37 degree with thehorizontal. At its highest point in this trajectory, the velocityof the projectile would be what?
Answers
Answer:.
Required velocity = 6.26ms^-1
Explanation:
Given,
Distance, s = 450m
Time, t = 2 sec
Step 1. We obtain the distance covered within the given time under gravitational acceleration, g = 9.8ms^-2
S = ut + (1/2)gt^2. :; u = 0
: S = (1/2)gt^2
=(1/2) (9.8)(2^2)
= 19.6m
Step 2 :
We obtain the velocity using the formula.
V^2 = u^2 + 2gs.
Where u is initial velocity, v is final/ required velocity
Again u = 0
: V^2 = 2 (9.8)(19.6)
= 39.2
: V = 6.26ms^-1
Answers
The momentum of the car is 24000 Kg•m/s
Momentum is defined as the product of mass and velocity. Mathematically, it can be expressed as:
Momentum = mass × velocity
With the above formula, we can obtain the momentum of the car as follow:
- Mass = 1200 Kg
- Velocity = 20 m/s
- Momentum =?
Momentum = mass × velocity
Momentum = 1200 × 20
Momentum of car = 24000 Kg•m/s
Learn more about momentum:
Answer:
24000 kg·m/s
Explanation:
Momentum is Mass x Velocity, so 1200 kg time 20 m/s = 24000 kg-ms/s
Answers
Answer:
doubling the size of the tax more than doubles the deadweight loss while less than doubles the revenue generated
Explanation:
(a)
The quantity of rooms rented before tax, Q1 = 1000 rooms.
The quantity of rooms rented after the imposition of tax Q2 = 900 rooms.
Size of the tax = $10
Price paid by buyer = $108
Price received by seller = $98
Deadweight loss = 1/2 x (Q2 — Q1) x (size of the tax)
Deadweight loss = 1/2 x (1000 — 900) x ($10) = $500
Tax revenue generated = size of tax * (Q2) = $10 x (900) = $9000
b)
The quantity of rooms rented before tax, Q1 = 1000 rooms
The quantity of rooms rented after the imposition of tax, Q2 = 800 rooms Size of the tax = $20
Price paid by buyer = $116
Price received by seller = $96
Deadweight loss = 1/2 x (Q2 — Q1) x (size of the tax)
New Deadweight loss = 1/2 x (1000 — 800) x ($20) = $2000
Thus, dead weight loss quadruples post doubling the size of tax. New Tax revenue generated = size of tax x (Q2) = $20 x (800) = $16000 Thus, revenue generated less than doubles post doubling the size of tax.
Answers
Answer: hello your question is incomplete below is the complete question
Water stands at a depth H in a large open tank whose side walls are vertical . A hole is made in one of the walls at a depth h below the water surface. Part B How far above the bottom of the tank could a second hole be cut so that the stream emerging from it could have the same range as for the first hole
answer :
At Height ( h ) from the bottom of Tank
Explanation:
Determine how far above the bottom of the tank a second hole be cut
For the second hole to have the same range as the first hole
Range of first hole = Velocity of efflux of water * time of fall of water
= √ (2gh) * √( 2g (H - h) / g)
= √ ( 4(H-h) h)
Hence the Height at which the second hole should be placed to exercise same range of stream emerging = h from the bottom of the Tank
Final answer:
The second hole should be cut at the same height as the first hole to have the same range for the stream.
Explanation:
In order for the stream emerging from the second hole to have the same range as the first hole, the second hole should be cut at the same height as the first hole. This is because the range of the stream depends on the initial velocity and the vertical distance traveled. If the second hole is higher or lower than the first hole, the vertical distance traveled will be different and the range of the stream will be affected.
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Answers
Final answer:
The car, accelerating at a constant rate of 2.0 m/s2 from rest, will travel a distance of 144 meters in 12 seconds.
Explanation:
The question pertains to the concept of motion in physics, specifically how distances travelled are influenced by an object's acceleration. The car is accelerating at a constant rate of 2.0 m/s2 from rest. It means that the initial velocity of the car is 0. We can use the formula of motion, s = ut + 0.5at2, where u is the initial velocity, a is the acceleration and t is the time.
In this case, u = 0 (as the car starts from rest), a = 2.0 m/s2 (constant acceleration) and t = 12 seconds. Substituting these values into the formula, we get:
s = 0*12 + 0.5*2*122
Therefore, the car will travel 144 meters in 12 seconds assuming it accelerates at a constant rate.
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beryllium form?
A. An ion with a -2 charge
B. An ion with a +6 charge
C. An ion with a +2 charge
D. An ion with a -6 charge
Answers
The Beryllium (Be) has an atomic number of 4 and belongs to Group-2 elements. The Beryllium will form a divalent cation (+2). Thus, option C is correct.
What are cations and anions?
In an atom, the number of electrons equals the number of protons. If the electrons are removed from the atom or the electrons are added to the atom, the atom has an excessive positive or negative charge.
This excessive of electrons or lack of electrons forms Ions. The excess of electrons has a negative charge or anions and the lack of electrons has a positive charge or cations.
Beryllium has 4 electrons. Two electrons are occupied in the valence shell of beryllium. Group 2 elements always form the positive ions or cations, to become stable ions.
The outermost shell of beryllium has two electrons. In order to form a stable ion, beryllium should lose its two electrons or gain six electrons. Beryllium belongs to the Group-2 element, it always loses two electrons and forms Be²⁺, to form a stable ion.
Hence, Beryllium forms an ion with a +2 charge. Thus, the correct option is C.
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Answer:
the answer is c which is a+2 charge
Explanation:
Beryllium is in group 2A. It's nearest noble gas is Helium, which is 2 elements behind Beryllium. ThBeryllium wants to lose two electrons. When it does that, Beryllium will have a positive chargeof two, and it will be stated as B-e two plus.