Answer:
62
Step-by-step explanation:
add 24 to the smaller number to get the greater one
A perfect square is a number that has an whole number square root. For example, 25 is a perfect square, because is 5, a whole number.
We need to find the perfect square of the numbers 3x 4.
To find perfect square we square the numbers .squaring means multiplying the number by itself.
Square of 3 is 3x3=9
Square of 4 is 4x4=16.
The correct option is perfect square of 3x4 is 9x16.
The sum of their ages is 50 so x + y = 50
If x - 10 = y then y + y + 10) = 50
50 = 2y +10
Subtract ten from both sides
40 = 2y
Divide by 2
Y = 20
And remember x - 10 = y
Then x - 10 = 20
Add 10 to both sides
X = 30
ANSWER: Alvin is 20, Elga is 30
Answer:
Length = 14 inches
Width = 3 inches
Step-by-step explanation:
length * width = area
(x + 8 ) (x - 3) = 42
Use FOIL method
x*x - x*3 + 8*x - 8*3 = 42
x² -3x + 8x - 24 = 42
x² + 5x - 24 - 42 = 0
x² + 5x - 66 = 0
Sum = 5
Product = 66
Factors = 11 , (-6)
x² + 5x -66 = 0
x² + 11x - 6x - 6*11 =0
x(x + 11) - 6(x + 11) = 0
(x + 11) (x -6) = 0
x + 11 is ignored because length and width will not have negative value.
x - 6 = 0
x = 6
Length = x + 8 = 6 + 8 = 14 inches
Width = x - 3 = 6 - 3 = 3 inches