Answer:
A ..
Step-by-step explanation:
Simplify= 4r+3
Because 8r plus -4r which is 4r and then 3 can’t be simplified so u keep it the same
Then the answer if r=5 is 23
Because the equation looks like 4(5)+3
5 times 4 is 20 plus 3 is 23
Answer:
By finding the least common multiples of the denominators of the two fractions
Which is 15
Step-by-step explanation:
Fraction A = 2/3
Fraction B = 3/5
To find the least common denominator of the two fractions,
Fraction A = 2/3 and Fraction B = 3/5, Sydni will have to find the least common multiples of denominator 3 and denominator 5.
Multiples of denominator 3 = 6, 9, 12, 15, 18, 21
Multiples of denominator 5 = 10, 15, 20, 25
The least common multiples of the two denominators is 15
Therefore, the common denominator of Fraction A = 2/3 and Fraction B = 3/5 is 15
Answer:
12 and 10 and
-12 and - 10
Step-by-step explanation:
Givens
Larger number = x
Smaller number = x - 2
Equation
x*(x - 2) = 120
Solution
Remove the brackets
x^2 - 2x = 120
Subtract 120 from both sides
x^2 - 2x - 120 = 0 Factor
(x - 12)(x + 10) = 0
x - 12 = 0
x - 12 + 12 = 12
the other number is 2 less than this one or x = 10
=================
x + 10 = 0
x = - 10
The number that is 2 less than this one is
x = -10 -2
x = -12