To approach the runway, a pilot of a small plane must begin a 10 descent starting from a height of 1983 feet above the ground. to the nearest tenth of a mile, how many miles from the runway is the airplane at the start of this approach. a. 2.2 mi. b. 0.4 mi. c. 11,419.6 m.
answer: we have from thales theorem that because the 2 triangles are similar, jm/jk=jn/jl. we have that jn=x, jl=x+24 and that jm=7 and jk=28. substituting, we get:
hence, x/(x+24)=1/4. this leads to 4x=x+24, 3x=24, x=8. we have solved for x=jn and this is equal to 8.
7x is your answer
both of these numbers are like terms so you just combine them to get 7x
a = 28x^2
the area of a triangle is equal to
a = 1/2 b*h
the base is 7x and the height is 8x
a = 1/2 (7x)*(8x)
a = 1/2 (56x^2)
a = 28x^2
remember use pemdas! there are no parentheses or exponents so lets move onto the first part of the equation: multiplication and division. first, lets break the first part of the equation up into something easier using the distributive property. 28 * 12= (20 *12) + (8*12) you know that 20*12 is 240 and 8*12 is 96. add them and you get 336. then, lets solve the last part of the equation (the last part of pemdas is addition and subtraction). 336 plus 34 is 370. hope this !