Answer:
We know that the value of n will be negative.
Step-by-step explanation:
Since 15 is so much larger than 2, we know that the other value on that side would have to be a negative value. Since the coefficient is not negative, we know the variable must be.
Answer:
The distance is about 3, but the exact answer would be 2.8284271
You need to use the Pythagorean Theorem for this because it finds you an exact answer, as well as test your other math skills.
Step-by-step explanation:
Pythagorean Theorem:
a2+b2=c2
The distance between A and B we will call C. Line C is the easiest way to get from A to B or B to A. The line A is at the top of we will also call line A, and same goes for the B line. What you have to do:
A=2
B=2
a2=4
b2=4
4+4=c2
8=c2
Find the square root of 8, which is 2.8284271. It is about 3. (It looks like 2 tho)
What are the answer choices?
The answer is -140 if you round it up.
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 <em>c</em>, the constant, that sum to <em>b</em>, the coefficient of <em>x</em>. Our <em>c</em> is 100 and our <em>b</em> 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 <em>x</em>=4, substitute 4 into our perimeter expression:
4*4+40=16+40=56.
