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Scorpion4ik [409]
3 years ago
7

Verify the identity. tan(x+(pi/2)) = -cot x

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
4 0
Tan (x + π/2) = [sin (x + π/2) / cos (x + π/2)] = [sin x cos π/2 + sin π/2 cos x] / [cos x cos π/2 - sin x sin π/2] = cos x / - sin x = -cot x
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Graph the line with the equation y= - 1/4x -7? ​
Reil [10]

Answer:

just go down negative 7 on the y int and that's ur starting point, then go down -1 and over 4 to the right, repeat this step 2 or 3 times then draw ur line.

4 0
3 years ago
Draw a vertical line through a normal distribution for
m_a_m_a [10]

The proportion in the tail with regards to the z scores will be:

  • z = 1.00 = 0.1587
  • z = 0.50 = 0.3085
  • z = -1.25 = 0.1056
  • z = -0.40 = 0.3446

<h3>How to calculate the values?</h3>

a. z= 1.00

P(z > 1.00) = 1 - P(Z < 1.00)

= 1 - 0.8413

= 0.1587

The tail will be on the right side.

The proportion of the tail will be 0.1587.

b. z = 0.50

P(z > 0.50) = 1 - P(Z < 0.50)

= 1 - 0.6915

= 0.3085

The tail will be on the right side.

The proportion of the tail will be 0.3085

c. z= -1.25

P(z < -1.25)

= 0.1056

The tail will be on the left side.

The proportion of the tail will be 0.1056.

d. z= -0.40

P(z < -0.40)

= 0.3446

The tail will be on the left side.

The proportion of the tail will be 0.3446.

Learn more about z scores on:

brainly.com/question/25638875

#SPJ1

8 0
2 years ago
I need help with these two please :’)
tatiyna

Answer:

59)

Therefore the height of the pyramid is 14 meter.

60)

Therefore the Diameter of Cone is 17.32 cm.

Step-by-step explanation:

59 )

Given:

Shape is Rectangular Pyramid,

Length = 3 meter

Width = 8 meter

Volume of Rectangular Pyramid = 112 cubic meter

To Find:

Height:

Solution:

We Know,

\textrm{Volume of Rectangular Pyramid}=\frac{1}{3}(Length\times Width\times Height)

Substituting the given values we have

112=\frac{1}{3}(3\times 8\times Height)\\ \\\therefore Height=\frac{336}{24}\\\\\therefore Height=14\ meter\\

Therefore the height of the pyramid is 14 meter.

60 )

Thee shape is of Cone

Given:

Height= 5 cm

Volume of cone = 125 π cm³

To Find:

Diameter of a cone = d = ?

Solution:

We know,

\textrm{Volume of cone}=\frac{1}{12}\pi (Diameter) ^{2}\times Height

Substituting the given values we have

125\pi =\frac{1}{12}\pi  d^{2}\times 5\\ \\d^{2}=25\times 12\\  \\d^{2}=300\\\\d=17.32\\   \therefore Diameter = 17.32\ cm

Therefore the Diameter of Cone is 17.32 cm.

6 0
3 years ago
Write the expression as a product of polynomials:
Licemer1 [7]

x(b+c)+3(b+c) = (x+3)(b+c)

5 0
3 years ago
What is the answer to the question
Savatey [412]

i really don't understand this question

i wiil give u a feedback

7 0
3 years ago
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