Answer:
z = - 1
Step-by-step explanation:
z + (z - 6) - 2 = - 10 ← remove the parenthesis on left side
z + z - 6 - 2 = - 10 , that is
2z - 8 = - 10 ( add 8 to both sides )
2z = - 2 ( divide both sides by 2 )
z = - 1
Answer:
50 degrees I think, I'm sorry correctly I don't know
Answer:
3.74
Step-by-step explanation:
Since 64 is x2 the number 32, and the tax for that is 1.87 you times that times 2 so:
1.87x2=3.74
Answer:
Yes, the zeros should be counted as significant.
Step-by-step explanation:
The zeros are significant because they show the place value of the number that is being rounded so they show how big the number is.
Answer:
2400 coins
Step-by-step explanation:
What we should do is calculate the Least Common Multiple of 80 and 75, since each of us put together a group with this amount of coins, this way we will know the amount of coins when they are equal.
To obtain the L.C.M
you have to factor both numbers and multiply the numbers whose exponent is the highest, it looks like this:
75 = 5 ^ 3
80 = 2 ^ 4 * 5
We multiply those with the highest exponent,
5 ^ 3 = 75
2 ^ 4 = 16
75 * 16 = 1200.
L.C.M. is 1200.
Since they tell us that they have less than 2000 coins, this is the correct answer, because when assembling these groups in this way, they coincide again in 2400, which is over the limit.
So, each one has 1200 coins, in total it would be:
1200 * 2 = 2400
Between them they have a total of 2400 coins