Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total savings that she stil
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Answer:
<h2><em>50.42m/s</em></h2>Step-by-step explanation:
Average speed is the change in distance of a body with respect to time. This is expressed as:
Given the function of the height in metres expressed as y = 56t − 1.86t² and time interval [1,2]
t₁ = 1sec and t₂ = 2 secs
y(t₂) = 56t₂ − 1.86t₂²
y(2) = 56(2) − 1.86(2)²
y(2) = 112-7.44
y(2) = 104.56
y(t₁ ) = 56t₁ − 1.86t₁ ²
y(1) = 56(1) − 1.86(1)²
y(1) = 56-1.86
y(1) = 54.14
Substituting the derived value into the formula for finding the average speed:
<em>Hence, the average speed over the given time intervals. [1, 2] is 50.42m/s</em>
Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:
Step-by-step explanation:
We require to find the third side of the triangle.
Using Pythagoras' identity
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let x represent the third side, then
x² + 7² = 8², that is
x² + 49 = 64 ( subtract 49 from both sides )
x² = 15 ( take the square root of both sides )
x =
Thus
sinΘ = =