1)Calculate the product:
21a + 10a - 3a
2)Collect like terms:
28a
Answer:
28a
I don't know for sure I'm going to ace grade next year but I know that you you need to put the coefficients with the same variable together and the variable next to the coefficients and multiply or add or divide or subtract them and you get your answer and this is just 7th grade math I'm relying on
Answer:
the answer is VY
Step-by-step explanation:
Between each pair of letters there is 1 missing letter, between each letter in a pair there are 2 missing letters.
I've denoted the missing letters with parentheses:
(A) B(CD)E
(F) G(HI)J
(K) L(MN)O
(P) Q(RS)T
(U) V(WX)Y
14-8=6, so 8 balls balance with 6 balls and 20 grams. From this you know that 2 balls=20 grams, simply divide this by 2 to get the weight of one ball which will weigh 10 grams.
C.) 7 years
PS use Google to answer questions like this
