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2 years ago

I need help on part one pleaseeee :). Thank you so much!

Mathematics

1 answer:

Ivenika [448]2 years ago

8 0

Answer:

look at explanation for answer...

Step-by-step explanation:

y = 2x + 1

so you want the coordinates (1,3)

so you input the x coordinate into the equation,

y = 2(1) + 1

y = 2 + 1

y = 3

but if you have to write a new equation to get coordinates (1,3)

you could write the equation

y = 3x

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Create a real life example using either temperature or money to compare -3 and -5

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Use Hooke's Law to determine the work done by the variable force in the spring problem. A force of 450 newtons stretches a sprin

vlada-n [284]

Answer:

The work done is 202.50Nm

Step-by-step explanation:

Given

$F =450N$

$x_1 = 30cm$

$x_2 = 60cm$

Required

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First, we calculate the spring constant (k)

$F = kx_1$

$450N = k *30cm$

$k = \frac{450N}{30cm}$

$k =15N/cm$

So:

$F = kx_1$

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The work done using Hooke's law is:

$W =\int\limits^a_b {F(x)} \, dx$

This gives:

$W =\int\limits^{60}_{30} {15x} \, dx$

Rewrite as:

$W =15\int\limits^{60}_{30} {x} \, dx$

Integrate

$W =15 \frac{x^2}{2}|\limits^{60}_{30}$

This gives:

$W =15 *\frac{60^2 - 30^2}{2}$

$W =15 *\frac{2700}{2}$

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$W =20250N-cm$

Convert to Nm

$W =\frac{20250Nm}{100}$

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3 years ago

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Answer:

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Step-by-step explanation:

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Time is 3yrs

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Interest =2.88

To get the value for 3yrs,add the interest to the principal value

Exact value in 3yrs=

3+2.88

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2 years ago