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3 years ago

Maria looked at the sketch of a section of roof shown below.

Mathematics

1 answer:

Serjik [45]3 years ago

3 0

So every triangle has to have an equal of 180 because if you spread it out and take a triangle apart then you can make a straight line, basically you need to have two same angles and one different, like you have in the model. The X is 40 like the other one. Hope this helps you answer the question. (I can’t completely answer but I hope this helps you understand better!)

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4. Ian and his friends are renting a cabin

lesantik [10]

I’m so sorry for this 4 night graph 1.89

4 0

2 years ago

A mass of 5 kg stretches a spring 10 cm. The mass is acted on by an external force of 10sin( t ) N(newtons) and moves in a mediu

yKpoI14uk [10]

Answer:

A) C1 = 0.00187 m = 0.187 cm, C2 = 0.0062 m = 0.62 cm

B) A sample of how the graph looks like is attached below ( periodic sine wave )

C) w = $\sqrt[4]{3}$ is when the amplitude of the forced response is maximum

Step-by-step explanation:

Given data :

mass = 5kg

length of spring = 10 cm = 0.1 m

f(t) = 10sin(t) N

viscous force = 2 N

speed of mass = 4 cm/s = 0.04 m/s

initial velocity = 3 cm/s = 0.03 m/s

Formulating initial value problem

y = viscous force / speed = 2 N / 0.04 m/s = 50 N sec/m

spring constant = mg/ Length of spring = (5 * 9.8) / 0.1 = 490 N/m

f(t) = 10sin(t/2) N

using the initial conditions of u(0) = 0 m and u"(0) = 0.03 m/s to express the equation of motion

the equation of motion = 5u" + 50u' + 490u = 10sin(t/2)

A) finding the solution of the initial value

attached below is the solution and

B) attached is a periodic sine wave replica of how the grapgh of the steady state solution looks like

C attached below

3 0

3 years ago

1/3 X 12 = 12 X ___ = __

valkas [14]

1/3=4 hop this help you

8 0

2 years ago

Which of the following is the equation of a line that passed though the points (2,5) and (4,3)

STatiana [176]

The correct answer is C as it has the same line of equation. We can make this clear by verifying that these two points make the same equation or not. So as we can see if we calculate the gradient using the formula y2 - y1 / x2 - x1.

As we now know that the gradient is -1. We can simply put any one point in the equation y - y1 = m(x - x1) to get the line of equation. WHen we calculate the line of equation it come out to be y = -x + 7

4 0

3 years ago

Simplify 4 to the 11th power over 4 to the -8th power

madam [21]

Answer:

274878070200

Step-by-step explanation:

4 to the power 11 = 4194304

4 to the power -8 = 0.00001525878

4194304/0.00001525878 = 274878070200

3 0

2 years ago