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The ratio of boys to girls at the dance was 3:4. There were 60 girls at the dance. How many boys were at the dance?
Use a proportion comparing boys to girls at the dance. Boys/girls¾ = x/60Solve the proportion through cross-multiplying, setting the cross-products equal to each other and solving as display below.(3)(60) = 4x180 = 4x180/4 = 4x/445 = xThere were 45 boys.
Solve 2 ln (√x) - ln (1 - x ) = 2 . Solution: Firstly get the two logarithms combined in a single logarithm. 2 ln (√x) - ln (x - l) = 2 ln ((√x) 2 ) ln (1 - x ) = 2
simplify the expression 3/5/64
Explain Combining Negative Signs in integers? You've learned about positive and negative integers. BASICS : When you place a negative sign in front of an integer, you get
There are a variety of strategies that people use for developing this ability. For instance, while adding 1821,695 and 250, a person could estimate it mentally i) by rounding of
i need help in math
∫1/sin2x dx = ∫cosec2x dx = 1/2 log[cosec2x - cot2x] + c = 1/2 log[tan x] + c Detailed derivation of ∫cosec x dx = ∫cosec x(cosec x - cot x)/(cosec x - cot x) dx = ∫(cosec 2 x
What is the exact vale of sin(theta/2) when sintheta=3/5, pi/2
The product on multiplying - 4bc with 2a is - 8abc. That is, a term with minus sign multiplied with a term having a positive term gives a product which has a minus sign. On the
In parallelogram ABCD, ∠A = 5x + 2 and ∠C = 6x - 4. Find the evaluation of ∠A. a. 32° b. 6° c. 84.7° d. 44° a. Opposite angles of a parallelogram are same in measu
Function of a Function Suppose y is a function of z, y = f(z) and z is a function of x, z = g(x)
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