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2 years ago

Can someone please help me with this question

Mathematics

1 answer:

Shalnov [3]2 years ago

3 0

Answer:

2 9000 a 400 b 60

c 900

Step-by-step explanation:

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Find f(-1) given f(x)=-3x^3+2x^2+24<br><br> Help me please

Talja [164]

Answer: 23

If x=-1 then (-1) to the power of 3 = -1 and (-1) to the power of 2= 1

3(-1)^3= -3
2(-1)^2= 2
-3+2+25= 23

7 0

2 years ago

Your current schedule only lets you take two 1-credit courses every six months. You need 12 credits to get the degree you want.

yaroslaw [1]

3x12=36
36=3 years to get a degree

4 0

2 years ago

Read 2 more answers

Choose all that are correct.

anastassius [24]

Answer:

Step-by-step explanation:

A ladder 5 meters long leans against a wall. The top of the ladder is 4 meters above the ground. The

ladder makes an approximate angle of 53° with the ground. This will not be correct because in the process of calculating the angle , we have

tanФ = 10/6.2

= 1.6129

Ф = $tan^{-1}$ 1.6129

= 58.20

And it was not mentioned in the statement that the angle was approximated.

2. A ladder 5 meters long leans against a wall. The top of the ladder is 4 meters above the ground. The

ladder makes an approximate angle of 53° with the ground. This is correct , because the calculation will give an approximate answer of 53

3. A ladder 6 meters long leans against a building. The ladder makes an angle of 60' with the ground. The

ladder reaches approximately 5.2 meters up the wall. This is also correct because the calculation will give an approximate answer of 5.2

6 0

2 years ago

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Find the equation of the line normal to the curve of y=3cos1/3x, Where x=\pi

sertanlavr [38]

Answer:

$y = \frac{\sqrt{2}x}{3} - \frac{\sqrt{2}\pi}{3} + 1.5$

Step-by-step explanation:

The equation to the line normal to the curve has the following format:

$y - y(x_{0}) = m(x - x_{0})$

In whicm m is the derivative of y at the point $x_{0}$

In this problem, we have that:

$x_{0} = \pi$

$y(x) = 3\cos{\frac{x}{3}}$

$y(\pi) = 3\cos{\frac{\pi}{3}} = \frac{3}{2}$

The derivative of $\cos{ax}$ is $a\sin{ax}$

$y(x) = 3\cos{\frac{x}{3}}$

$y'(x) = 3*\frac{1}{3}\sin{\frac{x}{3}} = \sin{\frac{x}{3}}$

$m = \sin{\frac{\pi}{3}} = \frac{\sqrt{2}}{3}$

The equation of the line normal to the curve of y=3cos1/3x is:

$y - y(x_{0}) = m(x - x_{0})$

$y - \frac{3}{2} = \frac{\sqrt{2}}{3}(x - \pi)$

$y = \frac{\sqrt{2}}{3}(x - \pi) + \frac{3}{2}$

$y = \frac{\sqrt{2}x}{3} - \frac{\sqrt{2}\pi}{3} + 1.5$

8 0

2 years ago

An object is moving at a speed of 6 miles per month. Express this speed in feet per hour.

Dmitry_Shevchenko [17]

Answer: 31,680 feet per hour.

Step-by-step explanation:

3 0

2 years ago