womankrush538
20.03.2020 •
Mathematics
The base of the 37 foot ladder is 9 feet from the wall of a building. will the top of the ladder reach a window ledge 35 feet above the ground?
-I know its a yes but what is the math in it?
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Ответ:
You have to use the Pythagorean theorem. the formula is A squared + B squared = C squared. The formula with the numbers plugged in would look like this. 9 squared + ? = 37 squared. When we simplify it will be 81 + B squared = 1369. Now we have to subtract 81 from both sides so the equation will be 81 - 81 = B squared = 1369 - 81. 1369 - 81 is 1288. The square root of 1288 is 25 so the answer is correct.
Step-by-step explanation:
Ответ:
the angles opposite each other when two lines cross, they are always equal.
in this problem ∠7 and ∠8 are vertical angles.
"vertical" refers to the vertex (where they cross), not up/down. they are also called vertically opposite angles.
let
> ∠7
∠7= ∠8
angle (5y-29) and angle 7 are supplementary angles
so
(5y-29)+ ∠7=> (5y-29)+x=> equation 1
angle (5y-29) and angle (3y+19) are vertical angles
so
(5y-29)=(3y+> 5y-3y=19+> 2y=> y=24°
substitute the value of y in equation 1
(5y-29)+x=> (5*24-29)+x=> x=180-> x=89°
therefore
the answer is
∠7=89°
∠=89 °
y=24°