Answer:
Step-by-step explanation:
b = 10
Substitute b in every equation below and compare the results
<u>A. 2(b + 4) = 16
</u>
- 2(10 + 4) = 2(14) = 28 ≠ 16, incorrect
<u>B. 2(b + 2) = 40
</u>
- 2(10 + 2) = 2(12) = 24 ≠ 40, incorrect
<u>C. 3(b - 2) = 24
</u>
- 3(10 - 2) = 3(8) = 24, correct
<u>D. 2(8 + b) = 42
</u>
- 2(8 + 10) = 2(18) = 36 ≠ 42, incorrect
<u>E. 3(b - 4) = 20</u>
- 3(10 - 4) = 3(6) = 18 ≠ 20, incorrect
Answer:
Option 3 is right
Start at the origin. Move 3 and one-half units down because the x-coordinate is Negative 3 and one-half. Negative 3 and one-half is between -3 and -4. Move 2 units right because the y-coordinate is -2.
Hope this helps:)
f(x) increase by a factor of 3
Explanation:
Given that f(x)= 3* and the interval is x=4 to x=57
Now we put the value for x is 4 to 57 then value of f(x) increase with the multiply of 3.
Because the x is multiplied with 3 i.e., 3*
So f(x) increase by a factor of 3.
If we put x=4, then f(x)= 12 (∵ 3×4=12)
If we put x=5, the f(x)= 15 (∵ 3×5=15)
If we put x=6,the f(x)= 18 (∵ 3×6=18)
similarly., values of x= 7,8,9,...155.
Then,
If we put x=56, the f(x)=168
This process will continue until f(x)=171 for x=57.
Answer:
4,5,6
Step-by-step explanation:
(x)+(x+1)+(x+2)= 15
3x + 3 = 15
3x = 12
x = 4
Answer:
<em>Zeina had 35 books and Ali had 5 books</em>
Step-by-step explanation:
<u>Equations</u>
We know Zeina has seven times as many books as Ali. If we call
x = Number of books Ali has
Then Zeina has
7x = Number of books Zeina has
We also know if Zeina gave Ali 15 books, they would have the same number of books, thus:
x + 15 = 7x - 15
Adding 15:
x + 15 +15 = 7x
Subtracting x:
15 +15 = 7x - x
Operating:
30 = 6x
Dividing by 6:
x = 30 / 6
x =5
7x = 35
Thus Zeina had 35 books and Ali had 5 books