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4 years ago

12

Which represents two rays that intersect at a common endpoint?

2 answers:

sergeinik [125]4 years ago

5 0

From my understanding of mathematics I got the 2nd answer to be correct. Sorry, if I got this wrong I'm new at this.

ArbitrLikvidat [17]4 years ago

5 0

Answer:

2) An angle is the correct option.

Step-by-step explanation:

Given : Two rays that intersect at a common endpoint.

To find : Which represents two rays that intersect at a common endpoint.

Solution : We have given

Two rays that intersect at a common endpoint.

Angle : An angle is the space between two lines that meet each other ,When two lines meet at a point.

Therefore, 2) An angle is the correct option.

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unit vector lies in the xy plane, at an angle of 145 degrees from the +x axis, with a positive y component. What is the unit vec

Fittoniya [83]

Answer:

$-0.82i+0.57j$

Step-by-step explanation:

We are given that a unit vector A which lies in the xy-plane.

Unit vector:It is that vector whose magnitude is equal to 1.

$\mid A\mid=1$

$\theta=145^{\circ}$

We have to find the unit vector.

x-component of unit vector= $A_x=\mid A\mid cos\theta$

x-component of unit vector= $A_x=1cos145^{\circ}=-0.82$

y-component of unit vector= $A_y=\mid A\mid sin\theta=1\times sin145=0.57$

Unit vector ,A= $A_xi+A_yj=-0.82i+0.57j$

Hence, the unit vector = $A=-0.82i+0.57j$

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4 years ago

How much does 12 go into 11

Anni [7]

It goes into it 0 times but what you can do is 11 going into 12 which would give you 1.1 instead of you making it a remainder. <span />

6 0

3 years ago

Read 2 more answers

A. Work of 5 Joules is done in stretching a spring from its natural length to 16 cm beyond its natural length. What is the force

kirza4 [7]

Answer:

(a) 62.5 N

(b) 694.4 N/m

(c) 41.7 N

Step-by-step explanation:

Work done in stretching a spring is

$W = \frac{1}{2}Fe=\frac{1}{2}ke^2$ since $F=ke$

F is the applied force, E is the elongation and k is the spring constant.

(a) Here, e = 16 cm = 0.16 m

$W = \frac{1}{2}Fe$

$F = \dfrac{2W}{e} = \dfrac{2\times5}{0.16}=62.5\text{ N}$

(b) Here, e = 12 cm = 0.12 m

$W =\frac{1}{2}ke^2$

$k=\dfrac{2W}{e^2}=\dfrac{2\times5}{0.12^2}=694.4\text{ N/m}$

(c) The restoring force is the same as the applied force.

$F = \dfrac{2W}{e} = \dfrac{2\times5}{0.12}=41.7\text{ N}$

4 0

4 years ago

A printer is printing photos. For every 12 photos, the printer takes 4 mins.

notsponge [240]

Answer:

Photos: 3, 12, 21, 27, 30

Minutes: 1, 4, 7, 9, 10

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4 years ago

If j = k, then j + 9 = k + 9 represents which algebraic property

sleet_krkn [62]

Answer:

c) The given expression represents Addition Property of Equality.

Step-by-step explanation:

Here, the given expression is j = k

Now by ADDITION PROPERTY OF EQUALITY:

The property that states that if you add the same number to both sides of an equation, the sides remain equal.

So, <u> if A = B ⇒ A + </u><u>x </u><u> = B + </u><u>x</u>

<u></u>

Now, here given that j = k

If we add the same number 9 on both the sides, the equation remains undisturbed.

⇒ j + 9 = k + 9

Hence, the above expression represents Addition Property of Equality.

8 0

4 years ago