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# Logarithms

Express each of the following in the form in x=ax + b, and find the value of a and of b.   (i) xe-x =2.46 (ii) (xex)2 = 30e-x       Ans:(i) a=1,...

# Trigonometry

If 2tan2θ = 5 secθ+ 10, where θ is obtuse, find the value of tan θ without the use of calculator.     Ans: -√5/2     Thank you :)

# Solve the equation (logarithms)

(i) Solve the equation log2(x3+1) - 2 log2x = log2(x2-x+1) -2 (ii) Hence solve the equation log2(x3+1) - log2x2 =log2(x2-x+1)-2     Ans: (i) 2+2√2       ...

# Trigonometry

Solve for 0°<x<180° for the following equation, 8 cosec 2x cot 2x=3

# Logarithms

Evaluate the following. lg 1/2 + lg2/3 + lg 3/4 +...+lg 998/999 + lg 999/1000.

2x^2+49=-20x

# mutilple choice

Pasha bought 3 pounds of onions for \$2.67. which ratio is proportional to 3 pounds at \$2.67?   A. ___\$3.48___            4 pounds B. ___\$3...

# (x^3-5x^2+2x-10) / (x-5)

how do I divide this?

# solve -2x+6y=6

solve -2x+6y=6         -7x+8y=-5

# if 3 tacos and 2 burriots cost \$7.40 and 4 tacos and 1 burrito cost \$6.45. Then write a system of equations for the cost of a single taco and a single burrito

Define the variables, explain the solution.

# evaluate expression

how do I evaluate the expressions, then write the answer in scientific notation?   1.  (4.2 x 10^2) (4.2 x 10^5)   2.  (2.5 x 10 ^-2)^4       write...

# -5(m-8) rewrite without parenthesis...

My niece has the answer -5m-40 I disagree...

# y+6.1=19.5

I need help with this because i need a correct answer

# sec(arctan(3/4))

How do you solve this?

(-5)-24÷(-3)

# Trigonometry

(i) Factorize the expression 2 sin x cos x - cos x + 4 sin x -2. (ii) Hence solve the equation 2 sin x cos x - 2=cos x - 4 sin x for -360°≤ x ≤ 360°

# Logarithms

Given that a>b>1 and that 2 logab + 4 logba=9, find b in terms of a.   Ans: b=√a

# Combination and Composition numbers

f(x) =X-2     g(X)=x^2+1 f(x) = X-2     (f+g) 2       ( f g )-4            (fog )2            (fof)...

3[2+6(4-3)]