Make the fractions improper to multiply.2 1/5 becomes 11/5 and 1 3/4 becomes 7/4. multiply the numerators then multiply the denominators. you get 77/20, which is simplest form. don't let teachers feed you that bs about it having to be a mixed number. an improper fraction is way more useful.
A) The dimensions are (x+10) by (x+10).
B) The perimeter is given by 4x+40.
C) The perimeter when x is 4 is 56.
The quadratic can be factored by finding factors of c, the constant, that sum to b, the coefficient of x. Our c is 100 and our b is 20; we want factors of 100 that sum to 20. 10*10=100 and 10+10=20, so those are what we need. This gives us (x+10)(x+10 for the factored form.
Since the dimensions are all (x+10), and there are 4 sides, the perimeter is given by 4(x+10). Using the distributive property we have 4*x+4*10=4x+40.
To find the perimeter when x=4, substitute 4 into our perimeter expression:
4*4+40=16+40=56.
15, because angle L and N are equal, 3x=x+10 so x=5, plugging it in, we get that MN is 15
The correct answer is 21 and 9. 21+9=30 and 21-9=12. Hope this helps.
Answer:
6 5/6
Step-by-step explanation:
because two sides are the same on each side so 2 2/3×2 and 3/4×2 then add those two answers which are 5 1/3 and 1 1/2 and adding those would be 6 5/6
