The base is 3+(x), altitude is x so substitute. Now we know the area of a triangle is base X height X 1/2. Substitute again! 1/2 (3+x)(x)=35. Multiply both sides by 2 to cancel out the 1/2. Now you have (x)(x+3)=70 and you have to foil out the left side x^2+3x=70. Subtract 70 on both sides x^2+3x-70=0. Find two numbers that multiply to -70 and add to 3. Solve (x+10)(x-7)=0. the x value is 7. since you can't have negative length values. Substitute 7 into 3+x for the base so you know the base is 10 and the height is 7.
Answer:
w(C(L))= 0.25 |L - 105|
Step-by-step explanation:
you plug in C(L) into L in w(L)
<span>100 = 5 * (5+5+5+5)
</span><span>100 = (5*5*5) - (5*5)
</span><span>100 = (55/.5) - (5+5)</span>
360/20 is equal to 18 sides
Answer:
35
Step-by-step explanation:
370+50=420
420 divided by 12 equals 35
