Answer:
y = √(5x+34)
Step-by-step explanation:
The regression formula that matches a square root function to these points can be worked out by a suitable calculator. The attachments shows the points are matched exactly by the function ...
y = √(5x+34)
__
If you would like to work this by hand, you can put the (x, y) point values into the proposed equation and see what the coefficients need to be:
y = √(ax +b)
7 = √(3a +b) ⇒ 49 = 3a +b
8 = √(6a +b) ⇒ 64 = 6a +b
Subtracting the first equation from the second, gives ...
(64) -(49) = (6a +b) -(3a +b)
15 = 3a ⇒ a = 5
49 = 3(5) +b ⇒ b = 34
Answer:
The answer is B
Step-by-step explanation:
plug 2 into x to see
A.
x^2 + 8
2^2 + 8
4 + 8 = 12
B.
3x^2 + 1
3(2)^2 + 1
3(4) + 1
12 + 1 = 13
C.
2x^3 + 5
2(2)^3 + 5
2(8) + 5
16 + 5 = 21
D.
x^2 + x
2^2 + 2
4 + 2 = 6
2. 2 2/5
3. 2 1/2
4. 1/2
5. 4 3/5
6. 3 1/3
7. 2 4/5
8. 2
9. 4 1/3
10. 4 2/3
11. 2/5
12. 8 2/3
13. 1 1/2
14. 2 3/4
15. 1 5/12
16. 5 2/5
so we know the tiffany added 50 and 22 in her account and we know her balance is 306 so to find out how much she earned we have to calculate how much she earned in this case
balance
306-22
306
- 22
_______
284
- 50
2 3 4
so 234 is our answer and we can check our and by seeing if it calculates to
306
234
+ 50
2 8 4
+2 2
306
Answer:
L = 11 m
Step-by-step explanation:
The perimeter is 40 m, which in turn equals 2L + 2W. With W = 9 m, we have:
40m = 2L + 2(9 m), or 40 m = 2L + 18 m, or 22 m = 2L. Then L = 11 m.
