1 unit left and reflection across x axis
Answer:
To represent parts of whole numbers, we use fractions.
So if 4 kids are sharing 3 cookies, what happens?
First, we divide one cookie into four equal parts, and give one part to each kid. Then we do the same with the second cookie, and then with the third one.
In the end, each kid will have three pieces. Each piece is a whole cookie divided into four equal parts.
So we represent this amount as
3 (Number of parts) & 4 (How many equal parts the whole is divided into)
3
4
as a fraction
A fraction is made of two numbers :
Answer:
√{395×395}=√395²=395 is your answer
That’s right they both equal 67
Answer:
an = 115 + (n - 1) (-6)
a25 = - 29
Step-by-step explanation:
We use the definition for the nth term of an arithmetic sequence:
an = a1 + (n - 1) d
a5 = 91 = a1 + (5 - 1) d
91 = a1 + 4 d
a20 = 1 = a1 + (20 - 1) d = a1 + 19 d
1 = a1 + 19 d
now we subtract term by term one expression from the other
90 = 4 d - 19 d
90 = - 15 d
divide both sides by -15 to isolate d
d = 90 / (-15) = -6
Now we can calculate what a1 is using for example:
1 = a1 + 19 d
1 = a1 - 114
add 114 to both sides:
115 = a1
Then our general expression for the sequence is:
an = 115 + (n - 1) (-6)
We can now use it to calculate the value of a25:
a25 = 115 + (24) * (-6) = -29
