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3 years ago

Another 100 pt question, so whoever wants it, please help answering both parts of the question.

Mathematics

2 answers:

Crank3 years ago

6 0

Answer:

11. $\displaystyle 60° = m∠REN$

10. $\displaystyle 60° = m∠ENR$

Step-by-step explanation:

In every rectangle, when you have two diagonal segment bisectors, you will always have a circumcentre showing all midpoints of both segment bisectors, however, it measures 120° going <em>vertical</em> and 60° going <em>horisontal</em>, so with that being said, you have your answers.

I am joyous to assist you anytime.

* NOTE: Remember, the sum of the interior angles of ALL TRIANGLES is 180°.

mote1985 [20]3 years ago

6 0

Answer:

there is 30 degrees on boths sides of OBE so the triangle is 30,30 and another angle

all triangles have 180 degrees so 180 - 30 - 30 = 60 so OBE is 60 degrees.

Opposite angles of a rectangle have the same angles so REN is 60 degrees

ENR is also 60 degrees because they are the same angle so the angles have to be 60, 60, 60

Hope this helps

(both angles are 60)

Step-by-step explanation:

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A radioactive substance decays exponentially: The mass at time t is m(t) = m(0)e^kt, where m(0) is the initial mass and k is a n

forsale [732]

Answer:

mean life = 8264.5 s

Step-by-step explanation:

k = - 0.000121

The relation is given by

$m = mo e^{kt}$

Now, the mean life is the life time for which the sample retains.

The mean life is the reciprocal of the decay constant.

The relation between the mean life and the decay constant is

$\tau =\frac{1}{k}\\\\\tau = \frac{1}{0.000121} = 8264.5 seconds$

5 0

2 years ago

Please help me with this

Eduardwww [97]

Answer:

$r^{6}$

Step-by-step explanation:

Using the rule of exponents

$\frac{a^{m} }{a^{n} }$ = $a^{(m-n)}$ , then

$\frac{r^{9} }{r^{3} }$ = $r^{(9-3)}$ = $r^{6}$

5 0

2 years ago

Newton’s Second Law of Motion states that the acceleration of an object is directly proportional to the force exerted on the obj

aev [14]

The force the same object will exert if it accelerates at a rate of 7 m/s² is 35N

From the question,

We are to determine the force the object will exert.

From the information,

Newton’s Second Law of Motion states that the acceleration of an object is directly proportional to the force exerted on the object

Let acceleration be a

and

Force be F

Then we can write that,

F ∝ a

Then,

Introducing the constant, mass, m

We get

F = ma

Now, we will determine the mass of the object

F = 15 N

a = 3 m/s²

Putting the parameters into the formula, we get

15 = m × 3

∴ m = 15 ÷ 3

m = 5 kg

The mass of the object is 5 kg.

Now, to determine the force the same object will exert if it accelerates at a rate of 7 m/s²

That is,

a = 7 m/s²

and

m = 5 kg

Putting the parameters into the formula, we get

F = 5 × 7

F = 35 N

Hence, the force the same object will exert if it accelerates at a rate of 7 m/s² is 35N

Learn more here: brainly.com/question/13590154

4 0

2 years ago

What is the period of the function f(x)=sin(x/3) ?

vitfil [10]

<h3>Answer: 6pi radians</h3>

(this is equivalent to 1080 degrees)

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

Explanation:

f(x) = sin(x/3)

is the same as

f(x) = 1*sin( (1/3)(x-0) )+0

and that is in the form

f(x) = A*sin( B(x-C) )+D

The letters A,B,C,D are explained below

A = helps find the amplitude

B = 2pi/T, where T is the period

C = determines phase shift (aka left/right shifting)

D = determines vertical shift = midline

All we care about is the value of B as that is the only thing that is connected to the period T

--------

Compare f(x) = 1*sin( (1/3)(x-0) )+0 with f(x) = A*sin( B(x-C) )+D and we see that B = 1/3, so,

B = 2pi/T

1/3 = 2pi/T

1*T = 3*2pi ... cross multiply

T = 6pi

The period is 6pi radians. This is equivalent to 1080 degrees. To convert from radians to degrees, you multiply by (180/pi).

6 0

3 years ago

The enthalpy of a reaction can be measured using a _____.

Harman [31]

The enthalpy of a reaction can be measured using a Calorimeter

4 0

3 years ago

Read 2 more answers