Answer:
hi
Step-by-step explanation:
84⁰+103⁰+120⁰=307⁰
360⁰-307⁰=53⁰
x is 53⁰
have a nice day
Answer:
a) W₁ = 78400 [J]
b)Wt = 82320 [J]
Step-by-step explanation:
a) W = ∫ f*dl general expression for work
If we have a chain with density of 10 Kg/m, distributed weight would be
9.8 m/s² * 10 kg = mg
Total length of th chain is 40 m, and the function of y at any time is
f(y) = (40 - y ) mg where ( 40 - y ) is te length of chain to be winded
At the beggining we have to wind 40 meters y = 0 at the end of the proccess y = 40 and there is nothing to wind then:
f(y) = mg* (40 - y )
W₁ = ∫f(y) * dy ⇒ W₁ = ∫₀⁴⁰ mg* (40 - y ) dy ⇒ W₁ = mg [ ∫₀⁴⁰ 40dy - ∫₀⁴⁰ ydy
W₁ = mg [ 40*y |₀⁴⁰ - 1/2 * y² |₀⁴⁰ ⇒ W₁ = mg* [ 40*40 - 1/2 (40)² ]
W₁ = mg * [1/2] W₁ = 10*9,8* ( 800 )
W₁ = 78400 [J]
b) Now we can calculate work to do if we have a 25 block and the chain is weightless
W₂ = ∫ mg* dy ⇒ W₂ = ∫₀⁴⁰ mg*dy ⇒ W₂ = mg y |₀⁴⁰
W₂ = mg* 40 = 10*9.8* 40
W₂ = 3920 [J]
Total work
Wt = W₁ + W₂ ⇒ Wt = 78400 + 3920
Wt = 82320 [J]
Answer:
5(-2z+6)
30-10z
-10z+30
Step-by-step explanation:
The slope of the line is 0.35
x = number of items sold
y = total price in dollars
Therefore,
using slope formula,
The slope is rise over run. The slope of a line is the measure of its steepness.
<h3>Slope equation:</h3>
where
y₂ = 3.85
y₁ = 2.45
x₂ = 11
x₁₁ = 7
Therefore,
m = 3.85 - 2.45 / 11 - 7
m = 1.4 / 4
m = 0.35
learn more on slope here; brainly.com/question/24911901
Answer:
7 - 2i
Step-by-step explanation:
Here we have two complex numbers and wish to combine them. Complex numbers have real and imaginary parts. We sum up the real parts and the imaginary parts separately:
-9 - 7i
+16 + 5i
------------
7 - 2i This is the sum of -9 -7i and 16 + 5i.
