Mathrules

28 Questions
1 Answers

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Help pretty please (Happy Black Friday)

Use Trigonometric identities to simplify Trigonometric Expressions.
1.

2. read more ..

Mathrules Nov 29, 2019

-1

1000

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Addition and subtraction identities

1. secx - sinx = (1 - sinx cosx)/cosx
2. sinx + tanx sinx = (sinx cosx + sin^2 x)/cosx
3. sec^2 x + cotx = (sinx + cos^3 x)/cos^2 x sinx

Mathrules Oct 28, 2019

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875

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Please Please please help

1. Prove:
2. Prove: (secx cscx) / cotx = sec^2 x
3. Prove: (secx cscx )/ csc^2 x = tanx
4. Prove: (tan^2 x cosx)/ 2secx = 1/2 sin^2 x read more ..

Mathrules Oct 28, 2019

0

859

3

+71

Please Please please Help

Solve each triangle. Round your answers to the nearest tenth.
1) a = 28.9 in, b = 26.5 in , c = 21.5 in

2) In EFD, d = 48 cm , m E = 112° , f = 60 cm read more ..

Omi67 ●●●

Mathrules Oct 23, 2019

-5

596

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+71

Mathrules May 19, 2019

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742

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I need help

If P(x) is the product of a linear polynomial and a cubic polynomial, how many roots does P(x) = 0 have?Explain

Mathrules May 19, 2019

-2

743

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+71

please help

explain why a polynomial equation with real coefficients and root 1-i must be of degree two or greater

Mathrules May 19, 2019

-2

793

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please help

What are the Holes of the following functions
1. f(x) = (x2 - 3x + 2)(x - 3) / (x - 1)(x2 - 5x + 6)
2. f(x) = (x2 - 9)(3x + 2) / (x2 - 4)(x - 3)

Mathrules May 19, 2019

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856

1

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help

The graph of which of the following rational equations has a hole
A. f(x) = (x2 + 5x + 4) / (x2 + x - read more ..

Mathrules May 19, 2019

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1373

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The volume (in cubic meters)(show work)

The volume (in cubic meters), V, of a rectangular room is given by the expression:
v = 7b^4-28
Where b is a positive integer and each dimension is a positive integer too. What are three unique expressions that could represent the read more ..

Mathrules Sep 3, 2018

-2

1110

1

+71

Help Plezz

If a + b = -2 and x+y=-2
what is 4x + 5a + 4y + 5b?

Mathrules Aug 30, 2018

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976

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Solve please

1) 3x^2 + 81=0
2) 6x^2 = -126
3) (1/4)x^2 + 12=0
read more ..

Mathrules Aug 15, 2018

-2

1183

0

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circular swimming pool

A park has a circular swimming pool. The diameter of the pool is 19ft. Whatis the distance traveled if you swim around the edge of the pool once? Use π ≈ 3.14.

Mathrules Jul 15, 2018

-2

3571

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+71

please help

1. Write a rule for the nth term of the arithmetic sequence with a1= -7 and the common difference of 5/2.
2. Find the sum of the first 10 terms of the arithmetic series. -5 + 0 + 5 + 10 +...
read more ..

Mathrules Jul 5, 2018

-2

959

1

+71

Complete a triangle proof (show work)

Complete a triangle proof given that AB is parallel to DE and B is parallel to E and prove that ABC is parallel to DEC.
(the shape look like a bowtie with the C point connecting the two triangles).

Mathrules Jul 5, 2018

-2

1197

1

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arithmetic (show work)

1. Write a rule for the nth term of the arithmetic sequence with a1= -7 and the common difference of 5/2.

2. Find the sum of the first 10 terms of the arithmetic series. -5 + 0 + 5 + 10 +...
read more ..

Mathrules Jul 3, 2018

-2

1138

1

+71

HLK is isosceles with base HK, IHL and JKL are right angles, IK=JH

HLK is isosceles with base HK, IHL and JKL are right angles, IK=JH
a.
HIL= KJL by HL
c. read more ..

Mathrules Jul 3, 2018

+71

0

sorry I'm new to this

MathrulesJul 2, 2018