Answer: 17.9
Step-by-step explanation:
Using Heron's formula:
Area of a triangle is given by:
√s(s-a)(s-b)(s-c)
Where a, b and c ara sides of the triangle and
S = (a+b+c) / 2
In the question above sides are :
XY=XZ= 20 and YZ=18
S = (20 + 20 + 18) / 2 = 58/2 = 29
Area = √29(29-20)(29-20)(29-18)
Area = √29(9)(9)(11)
Area = √25839
Area = 160.74513
Altitude = height(h)
Area = 0.5 × base × height
Base = yz = 18
160.74513 = 0.5 × 18 × h
160.74513 = 9 × h
h = 160.74513 / 9
h = 17.9 (3 s.f)
The answer is 14+35=49 :)))))
ANSWER
<u>EXPLANATION</u>
One way is to make x the subject in one equation and substitute into the other.
The second equation is
Let us put equation 1 in 2
Multiplying through by 2 gives;
They traveled 416.25 miles
we now that they travel 55.5 in one hour and we know they traveled 7.5 hours, so multiply 7.5*55.5
which gives you 415.25 miles
Answer:
Both ordered pairs are solutions to this equation.
Step-by-step explanation:
If you plug in the x and y values given in the ordered pair, you make the left side of the equation equal the right for both pairs.
