She would have $23.52 because 12 times 3 is 36 and 36-12.48=23.52
Answer:
89 if you pay 11$ to go to the museum for Justin 1$
Step-by-step explanation:
100 - 11 = 89.
Answer:
- 0.3
Step-by-step explanation:
6 2/5 = 6.4
6.4 - 2.7 - 4
6.4 - 6.7
= -0.3
Answer: x=8
Step-by-step explanation:
Since we are given that ∠ABC and ∠DBC are complementary angles, we know that adding them together should give us 90°. We can use this to solve for x.
6x+13+4x-3=90 [combine like terms]
10x+10=90 [subtract both sides by 10]
10x=80 [divide both sides by 10]
x=8
Now, we know that x=8.
Answer:
The vectors u and v are orthogonal
Step-by-step explanation:
* Lets explain Parallel and Perpendicular Vectors
- Two vectors A and B are parallel if and only if A = k B , k is a constant
not equal to zero.
- Two vectors A and B are perpendicular if and only if their scalar
product is equal to zero.
* Lets solve the problem
- Vector u = <10 , 0>
- Vector v = <0 , - 9>
∵ 10 ≠ k(0) and 0 ≠ k(-9)
∴ u ≠ k . v
∴ The vectors u and v are not parallel
∵ The scalar product of the vectors <a , b> and <c , d> is
ac + bd
∵ The scalar product of u and v = 10(0) + 0(-9) = 0 + 0 = 0
∴ The vectors u and v are orthogonal