By using cross multiplication x= 3×7÷5=4.2
the answer is 4.2
Answer:
Step-by-step explanation:
9.3 times 7 equals 65.1
65.1 time the 5 sides equals 325.5
325.5 plus the 84 for the base equals 409.5 ft^2
1: minus the 4x on both sides to get 5y=-4x-10. 2: divide 5 on both sides and simplify to get the answer of y=-4/5x-2.
Answer:
(, 3)
Step-by-step explanation:
Given the 2 equations
2x + 5y = 16 → (1)
10x - 3y = - 4 → (2)
Multiplying (1) by - 5 and adding to (2) will eliminate the term in x
- 10x - 25y = - 80 → (3)
Add (2) and (3) term by term
(10x - 10x) + (- 3y - 25y) = (- 4- 80) ← simplify
- 28y = - 84 ( divide both sides by - 28 )
y = 3
Substitute y = 3 into (1) or (2) for corresponding value of x
(1) : 2x + 15 = 16 ( subtract 15 from both sides )
2x = 1 ( divide both sides by 2 )
x =
Solution is (, 3 )
Derivative of tan(x) is sec²x
You can check the first principle method of derivation in attachment