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Lera25 [3.4K]
3 years ago
8

U have 5 pens. u get 5 more pens. how many pens do u have now

Mathematics
1 answer:
rodikova [14]3 years ago
3 0
You have 10 pens! 5+5=10
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acceleration is a(t) = 3t and velocity is v(t) = 1 at t = 1, what is the displacement from t = 2 to t = 4
lidiya [134]

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Step-by-step explanation:

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2 years ago
Find the area of the given triangle.
earnstyle [38]

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75 squared feet

Step-by-step explanation:

Area=1/2×base ×height

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Find the derivative of F(x)=-x^4+4x^3+ 70 for 0<=x<=3
timofeeve [1]

Answer:

  -4x^3 +12x^2 for 0 < x < 3

Step-by-step explanation:

The power rule is appropriate:

  (d/dx)x^n = n·x^(n-1)

This is applied to each of the terms.

  F'(x) = -(4·x^3) +4(3x^2) +0

  F'(x) = -4x^3 +12x^2 . . . . for 0 < x < 3

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The derivative is not defined at the endpoints of the interval, so F'(x) is only defined on (0, 3), not [0, 3].

8 0
3 years ago
Surface area of a pyramid
Ede4ka [16]

The general formula for the total surface area of a regular pyramid is T. S. A. =12pl+B where p represents the perimeter of the base, l the slant height and B the area of the base

To find the surface area of a regular triangular pyramid, we use the formula SA = A + (3/2)bh, where A = the area of the pyramid's base, b = the base of one of the faces, and h = height of one of the faces.

We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

To find surface area for a rectangular prism, use the formula SA = 2ab + 2bc + 2ac, where a is the width, b is the height, and c is the length. If you're trying to find the surface area of a triangular prism, use the formula SA = 2a + ph, where a is the area of the triangle, p is the perimeter, and h is the height

Hope that was helpful.Thank you!!!

7 0
3 years ago
A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore. Suppose that a storm is in progress wit
shtirl [24]

Answer:

The alternate hypothesis is:

H_{a} < 16

Step-by-step explanation:

There are two types of hypothesis. The null hypothesis and the alternate hypothesis. The null hypothesis is that the mean found is equal to the expected value. The alternate hypothesis is a question about this expected value(different, more, less)

A severe storm has an average peak wave height of 16.4 feet for waves hitting the shore.

This means that the null hypothesis is H_{0} = 16.4

Let us say that we want to set up a statistical test to see if the wave action (i.e., height) is dying down. If you wanted to test the hypothesis that the waves are dying down, what would you use for the alternate hypothesis

Dying down means lower average peak, that is, lower than the average of 16.4. This means that the alternate hypothesis is:

H_{a} < 16

4 0
2 years ago
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