Answer:
e. 1/(49n² +7n)
Step-by-step explanation:
Answer:
<u><em>x = 37/45</em></u>
Step-by-step explanation:
Here's how similar triangles work. We set up an equation as SIDE 1A/ SIDE 1B = SIDE 2A/ SIDE 2B
Ok, so these 2 triangles are similar, so we can set up a butterfly equation:
Side 1a would be 8x
Side 1b would be 5x +3
Side 2a would be 10x - 2
Side 2b would be 7x
----------------------------------------------------
Our equation would be
8x/(5x+3) = (10x-2)/7x
We cross multiply to get 8x(10x-2) = 7x(5x+3)
Instead of solving and getting squares, we can x on both sides and we get:
8(10x - 2) = 7(5x+3) ----> we simplify to get
80x - 16 = 35x + 21 ----> it's easy sailing from here.
45x = 37
<u><em>x = 37/45</em></u>
<u><em>gosh i hope it's right...</em></u>
Answer:
Step-by-step explanation:
1x3=3
2x3=6
3x3=9
Answer:
10/12 can be approximated by 1
3/8 can be approximated by 1/2
so the answer to the subtraction must be really close to 1-1/2 = 1/2 = 0.5
Step-by-step explanation:
The real solution can be found by converting to numerator 24, which is the LCM, or Lowest Common Multiple of numerators 12 and 8.
10/12 = 20/24
3/8 = 9/24
Now the subtraction is (20-9)/24 = 11/24 ≈ 0.4583
So the actual result 0.4583 is actually pretty close to 0.5.
A benchmark value is nothing more than a really simple fraction or integer (1/2, 1/3, 1, 2, ...) that you know where to plot on the number line.
Making approximations can serve as a double check to see if you didn't make any mistakes on the actual calculation.
Answer:
B)7∙7∙π
Step-by-step explanation:
the area of a circle A=πr^2
the r^2 turns into 7*7 and you keep the pi
so it would be 7*7*pi
