21 Answered Questions for the topic Solving

02/27/21

trigonometry (proven question)

cos2 (x/2) = (tanx + sinx) / 2 tanx

07/09/19

If cos^2sin^4x= A+Bcos2x+Ccos4x+Dcos2xcos4x, then A= B= C= D=

Please tell me how you got it by showing steps!! what does A, B, C, and D equal in the second equation?
Solving Algebra 1

03/20/19

The sum of two numbers is 42 and the difference is 20

12/11/18

How do you solve sinx=-0.44?

How do you solve this trigonometric equation algebraically with intervals of 0°≤x≤360° sin(x-15)=-0.44

10/17/18

Math Project Solving

At a supermarket that sells fruit by the pound, one person bought 3 lb of oranges and 6 lb of grapefruitfor a total of $6, while a second person paid $6.40 for 5 lb of oranges and 4 lb of... more

02/05/18

How do you solve 2cosx sin^2x =cosx over domain 3pi < or = to x < or = to 4pi (need to give exact answers)

I've been stuck on this question ugh

12/04/17

How much is left from his weekly allowance to put away from savings?

Miguel's weekly allowance is ¥500. Weekly, he spends ¥120 on food, ¥115 on transportation, and ¥130 on supplies. How much is left from his weekly allowance to put away from savings?
Solving

05/30/17

Worked hours

Two mechanics worked on a car. The first mechanic charged $65 per hour, the second mechanic charged $80 per hour. The mechanics worked for a combined total of 25 hours, and together they charged a... more

125^x + 5^(3x+1) = 400

I've been stuck on this forever. I don't understand how to solve it with multiple terms with different bases. I have to solve for x
Solving

09/03/16

Solve the following trigonometric equations

Solve the following trigonometric equations   (a) 2 cos θ +√3 = 0, 0 ≤ θ ≤ 2π     (b) tan x = √2sinx, 0 ≤ x ≤ 2π   (c) sec 2 x−1 = 0, 0 ≤ x ≤ 2π   (d) 2sin2 x−sin x−1 = 0, −2π ≤ x ≤ 2π
Solving Physics Algebra

03/28/16

Help with pendulum problem

The period of a pendulum is the time required for it to make one complete swing back and forth. The formula of the period P of a pendulum is P = 2(pi) times the square root of l over 32, where l is... more
Solving Algebra Equations

03/28/16

Help solving these equations?

The formula for the kinetic energy of a moving object is E = 1/2mv, where E is the kinetic energy in joules, m is the mass in kilograms, and v is the velocity in meters per second.   1- solve the... more
Solving

09/30/15

how to solve?

(2x^2)^3 the answer was 8x^6. How do you solve it? I'm  confused.
Solving Math Integers

06/23/15

For how many integers n is 3 < 5n-1 < 13?

I got 4/5 < n < 14/5, but the answer choices only have from one to five. I am confused, please help.   Thank you.
Solving

09/08/14

2/3 ÷ 5/12

what is 2/3 ÷ 5/12 =

07/03/13

express this algebraically

example  the sum of x and y equals 3 more than z . Expressed algebraically= x + y = z + 3 Help! :( 1. simple interest is the product of "p" dollars, "r" percent interest, and "t" years. 2. the... more
Solving

03/11/13

Problem Solving

The larger of two numbers is two more than three times the smaller.And when the larger number is subtracted from the smaller, the result is -16. What are the two numbers.
Solving Word Problem

02/17/13

FInding Per Hour: Solving

Tyler starts walking at 2 miles per hour. An hour later, Nadine starts jogging along same route at 6 miles per hour. How long will it take Nadine to catch up with Tyler?

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