Answer:
3a-21
Step-by-step explanation:
You multiple 3 with the inside of the parenthesis. 3 time a = 3a and 3 times negative 7 is -21
Answer:
He can only make 9
Step-by-step explanation:
He will have 4 cards left over so it will not be enough to make another stack.
I think it’s one half 1/2
Answer:
Harriet's estimated length is between 44.1 inches and 47 inches.
Step-by-step explanation:
Let the error be x.
so, x<4%
Now, if error is 1%
45 1/2 + 1% of 45 1/2
or, 91/2 + 1/ 100 × 91/2
= 46
Now,
45 1/2 - 1% of 45 1/2
or, 91/2 - 1/100 × 91/2
= 45.1
Now,
if error is 3%
45 1/2 + 3% of 45 1/2
or, 91/2 + 3/100 × 91/2
= 47
OR
45 1/2 - 3% of 45 1/2
= 91/2 - 3/100 × 91/2
= 44.1
Step-by-step explanation:
(8—4)—(5u+1)
4—(5u+1)
=3—5u
