Answer:
The equation is in standard form. You will have to convert it to slope intercept form, which is -0.125x + 3.75 = y
Step-by-step explanation:
s = x and a = y, therefore 0.5x + 4y = 15
0.5x + 4y = 15
0.5x + 4y = 15 first subtract 0.5x
4y = -0.5x + 15 then divide all by 4
y = -0.125x + 3.75 slope intercept form
If you plot the triangle on a graph, you'll see that the shape is a right triangle. Using the distance formula we can calculate the distance between point A and point B, which is the hypotenuse.
√<span><span><span>(<span>2− (−2)</span>)^</span>2 </span>+ <span><span>(<span>4−1</span>)^</span>2
</span></span>√<span><span><span>(<span>2+2</span>)^</span>2 </span>+ <span><span>(<span>4−1</span>)^</span>2
</span></span>√<span><span><span>(4)^</span>2 </span>+ <span><span>(3)^</span>2
</span></span>√<span><span>6+9
</span>√</span><span><span>25
</span>= 5
5 + 6 + 8 = 19. The perimeter of triangle ABC is 19 units. Hope this helps:)
~Ash</span>
Answer:
A is the answer
Step-by-step explanation:
Answer:
so so sorry girl but I do know this
Step-by-step explanation:
If I may what grade are you in
Your answer is D. 16x² - 56xy + 49y².
A perfect square trinomial is the result of a squared binomial, like (a + b)². Using this example, the perfect square trinomial would be a² + 2ab + b², as that is what you get when you expand the brackets.
Therefore, to determine which of these is a perfect square trinomial, we have to see if it can be factorised into the form (a + b)².
I did this by first square rooting the 16x² and 49y² to get 4x and 7y as our two terms in the brackets. We automatically know the answer isn't A or B as you cannot have a negative square number.
Now that we know the brackets are (4x + 7y)², we can expand to find out what the middle term is, so:
(4x + 7y)(4x + 7y)
= 16x² + (7y × 4x) + (7y × 4x) + 49y²
= 16x² + 28xy + 28xy + 49y²
= 16x² + 56xy + 49y².
So we know that the middle number is 56xy. Now we assumed that it was (4x + 7y)², but the same 16x² and 49y² can also be formed by (4x - 7y)², and expanding this bracket turns the +56xy into -56xy, forming option D, 16x² - 56xy + 49y².
I hope this helps!
