Answer:
1. x^2-36
X^2-6^2
(X-6)•(x+6)
3. 16y^2-25
4^2 Y^2-5^2
(4y)^2-5^2
(4y-5)•(4y+5)
5. 9a^2-121
3^2 a^2-11^2
(3a)^2-11^2
(3a-11)•(3a+11)
6. 196-x^2
14^2 -x^2
(14-x)•(14+x)
8. 36c^2-d^2
6^2 c^2 -d^2
(6c)^2-d^2
(6c-d)•(6c+d)
11. 1-4a^2
1^2- 2^2 a^2
1^2-(2a)^2
(1-2a)•(1+2a)
It’s D.) 2n-8 hope this helps
Answer:
f(6) ≈ 31
Step-by-step explanation:
If f(x) varies directly with x, we can write f(x) this way:
f(x) = kx
Using the given values, we can find k:
f(25) = k×25 = 130
k = 130/25 = 5.2
Then for x = 6, we have ...
f(x) = 5.2x
f(6) = 5.2×6 = 31.2
Rounded to the nearest whole number, ...
f(6) ≈ 31
Answer:
y - 27 = 0 (x - 21) or y = 27
Step-by-step explanation:
Out of the first box the possibility would be 3:12 or 3 out of 12. The second box would be 7:10 or 7 out of 10