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Rzqust [24]
3 years ago
15

Simplify the expression.

Mathematics
1 answer:
wlad13 [49]3 years ago
7 0
Coefficient of x is 2
Constant is 12

7y + 4x + 4 - 2x + 8
7y + 2x + 12
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A second particle, Q, also moves along the x-axis so that its velocity for 0 £ £t 4 is given by Q t cos 0.063 ( ) t 2 v t( ) = 4
Vladimir79 [104]

Answer:

The time interval when V_Q(t) \geq 60  is at  1.866 \leq t \leq 3.519

The distance is 106.109 m

Step-by-step explanation:

The velocity of the second particle Q moving along the x-axis is :

V_{Q}(t)=45\sqrt{t} cos(0.063 \ t^2)

So ; the objective here is to find the time interval and the distance traveled by particle Q during the time interval.

We are also to that :

V_Q(t) \geq 60    between   0 \leq t \leq 4

The schematic free body graphical representation of the above illustration was attached in the file below and the point when V_Q(t) \geq 60  is at 4 is obtained in the parabolic curve.

So, V_Q(t) \geq 60  is at  1.866 \leq t \leq 3.519

Taking the integral of the time interval in order to determine the distance; we have:

distance = \int\limits^{3.519}_{1.866} {V_Q(t)} \, dt

= \int\limits^{3.519}_{1.866} {45\sqrt{t} cos(0.063 \ t^2)} \, dt

= By using the Scientific calculator notation;

distance = 106.109 m

4 0
3 years ago
Someone please help me with number 8.
vichka [17]

Measurement of angle DEF would equal 180 because 71 plus 109 is 180

3 0
3 years ago
Work out the perimiter of a semi circle with radius of 3 <br> Give your answer in term of pi
sweet [91]

Answer:

15.425 cm is it without terms of pie

Step-by-step explanation:

you need to put it into terms of pie

5 0
4 years ago
Read 2 more answers
Part A
denis-greek [22]

Answer:

252/193

Step-by-step explanation:

According to the question

volume=36cm^3

Radius=3cm

Now

h= v/πr^2

=36/π*3^2

=36*7/193

=252/193cm

7 0
2 years ago
Which expression can be used to change 75 kilometers per hour to meters per minute?
atroni [7]
1h=60min\\1km=1000m\\\\\\75\ km/h=75\cdot\frac{1000}{60}\ m/min=1250\ m/min
4 0
3 years ago
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