Answer:
1. n + 8 = 10
2. 
= 10
3. 8n - 6 = 34
4. 3(n + 12) = 45
5. No
6. Yes
Step-by-step explanation:
(only for questions 5 and 6)
5. If you substitute in y = 1, you get 1 * 49 = 0 or 49 = 0 which is not true.
6. If you substitute in b = 8, you get:
this is true.
Answer:
57971014.49 Hz or 5.79 * 10^7 Hz
Step-by-step explanation:
Given that:
Speed of microwave (v) = 2,000,000 m/s
Wavelength, λ = 0.0345 m
Frequency :?
Using the relation :
v = fλ
f = v / λ
f = 2,000,000 / 0.0345
f = 57971014.49 Hz
Answer:
3 inches
Step-by-step explanation:
4 miles = 1 in
12 miles = 3 inches
Multiply both side of equation by 3.
Answer: x = {+-sqrt(3), +-2*sqrt(3)}.
Step-by-step explanation:
(x^2 - 8)^2 + (x^2 - 8) = 20
▪︎ Let (x^2 - 8) be y.
Then,
y^2 + y = 20
y^2 + y - 20 = 0
D = b^2 - 4ac = 1 + 20*4 = 81 = 9^2
y1 = (-b - sqrt(D))/(2a) = (-1 - 9)/2 = -10/2 = -5
y2 = (-b + sqrt(D))/(2a) = (-1 + 9)/2 = 8/2 = 4
1) x^2 - 8 = -5
x^2 = 8 - 5
x^2 = 3
x = +-sqrt(3)
2) x^2 - 8 = 4
x^2 = 8 + 4
x^2 = 12
x = +-sqrt(12)
x = +-2*sqrt(3)
G should be the correct answer
Hope this helps!
