Answer:
the first step is to distribute the -4 to (3-5x)
Step-by-step explanation:
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:
im sorry but i only know the second one, i believe its 224.3
Step-by-step explanation:
When you are finding the area, you multiply the length x the width. So for example, we have a rectangle that the length is 6 feet and the width is 4 feet. So, first of all we multiply 6x4= 24. Since its area don't forget it is Square Feet (or any other type of measurement).
Hope it helps!
As a fraction, the answer is 1/74 because 74/5476 simplifies to 37/2738 and 37 goes in to 2738 74 times. The decimal answer is 0.0135 recurring (the recurring points are on top of the 1 and the 5)
Hope this helps!
