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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.
3 multiplied by 5 by 3
Example Multiply 3x 5 + 4x 3 + 2x - 1 and x 4 + 2x 2 + 4. The product is given by 3x 5 . (x 4 + 2x 2 + 4) + 4x 3 . (x 4 + 2x 2 + 4) + 2x .
Without solving, find out the Wronskian of two solutions to the subsequent differential equation. t 4 y'' - 2t 3 y' - t 8 y = 0 Solution : First thing that we want to d
Q. a(b - c)x^2 + b(c - a)x + c(a - b) = 0 has equal roots then b = ? Ans: Condition that a quadratic equation ax² + bx + c = 0 has equal roots is: Its discriminant, b² - 4ac = 0 A
write in factor form 9x3+9x5
do you have a decimal place value chart
25% of babies born at Yale New Haven Hospital weigh less than 6 pounds and 78% weigh less than 8.5 pounds. What percent of the babies born at Yale New Haven Hospital weigh among 6
Case 1: Suppose we are given expressions like 3abc and 7abc and asked to compute their sum. If this is the case we should not worry much. Because adding like exp
8l550ml - 1/4l =
Differentiate following. Solution : It requires the product rule & each derivative in the product rule will need a chain rule application as well. T ′ ( x ) =1/1+(2x) 2
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