Answer:
C, x + 20 = 41
Step-by-step explanation:
X represents the number of small sea shells that we originally had. When the family adds 20 more shells, that makes x + 20. The total number is 41, so that means the number of sea shells they already had (x) plus the number of sea shells they collected (20) equals the number of shells they have now (41).
Answer: k = 63
Step-by-step explanation: You need to multiply the left side by its reciprocal to move the numbers to the right. You also need to multiply by k on the right side to get it alone on the left. This will result in
(9/3)(3/9) = (21/k)(9/3) simplified
1 = 189/3k • k then multiply by k
k = 189/3 simplify
k = 63
The denominator is the same as the numerator
Answer:
Step-by-step explanation:
Step 1: Multiply both sides by t.
r=51t/d
Step 2: Multiply both sides by d.
dr=51t
Step 3: Divide both sides by r.
d/r=51t/r
d=51t/r
The LCD is 42 because that is the least number that they both are factors of.
Hope this helps :)