04/02/17

if f(n)=f(n-1)+7 and f(1)=-18 then f(37) =?

i have four choices, but i don't know where to begin, except to work backward and plug in the answers.  i would like to understand without getting choices

04/02/17

three consecutive even numbers add up to 24. What is the largest number

three consecutive even numbers add up to 24. What is the largest number and what is the equation?

precalculus: factoring

Factor and simplify.  (cos^2θ-1)/(cos^2θ-cosθ)

Precalculus- establishing identities

Establish the identity.  Work on one side only.  ((sinθcosθ)/(cos^2θ-sin^2θ))=((tanθ)/(1-tan^2θ))

the following series is arithmetic: 5+8+11+...+116

I have to show how I arrived at the following: a) determine the number of terms in this series. b) determine the sum of this series.  

04/02/17

In ΔABC, m<C = 38°, a = 12 and b = 14. Find the length of side c, to the nearest integer.

 trigonometry  law of cosines

the first term a(sub)0 of a geometric sequence is 64 and the common ratio is -(5/2)

determine a(sub)1   Write an explicit formula for this sequence   determine a(sub)6

The point (5, -3) in on the terminal side of an angle t. Find sin(t) to2 decimal places.

The point (5, -3) in on the terminal side of an angle t. Find sin(t) to2 decimal places.

04/01/17

A regular 20-gon a regular 40-gon are inscribed in a circle with a radius of 15 units

 Find the area of both figures

How many animals are going toward the river?

If a rabbit saw 6 elephants while going to the river and every elephant saw 2 monkeys going toward the river. Each monkey was holding a parrot. How many animals were going toward the river?

03/31/17

Circles in a square

You have a square that is 5cmx5cm. You must fit 5 circles inside this square. All of the circles have the same diameter. What is the highest possible radius of the circles?

03/30/17

The combined volume of two identical cubes is 250 cubic centimeters. What is measure of one cube's edge

I need to find the measure if the edge

Use properties of logarithm and exponential to solve the following equations:

a) 2+3x−1 =18 b) ln(x2 −4)=8 c) log3(x−2)+log3(x+1)=6

Use the properties of logarithms to rewrite each expression as a single logarithm:

Use the properties of logarithms to rewrite each expression as a single logarithm:   A) 2Log3x + log3(x-2)   B)ln(x-5) - ln(x2-25)        

What would be the answer please

12/2(5+5)= would he answer be 1 or 100 i came out with 100

03/29/17

Step by Step of this pre trig questionplease

I really need helping understanding this, can someone please give me a step by step of this problem. thanks.   Find cos(a+b) if sin(a)=-3/5 where a is in the fourth quadrant and tan(b)=12/5 where... more

03/28/17

the sum of two numbers is 47 and the difference is 15. What are the numbers?

 i need help solving for this problem because i am very confused on it

Please provide answer to 20/2 (5+5) Thanks in advance

20/2 (5+5)

(cos B/cot B) + (sin B/tan B) = sin B + cos B

Verify the Identity. 

03/27/17

Determine algebraically the coordinates of the a)centroid b)circumcener

Triangle DEF has the following properties:Vertice D(6,3) vertice E(1,-2) vertice F(4,-1)Median : from D: y=9/7x-33/7 median : from E : y=3/4x-11/4Median : from F: y=-3x+11Perpendicular bisector of... more

03/26/17

Two buildings are 60 meters apart. Find the height of the taller building

The angle of depression from the top of the taller building to the top of the shorter building is 15 degrees. The height of the shorter building is 30.4 meters

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