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son4ous [18]
4 years ago
9

Which equation represents y = −x^2 − 10x − 20 in vertex form?

Mathematics
1 answer:
olchik [2.2K]4 years ago
4 0
The vertex is (-5, 5) and the parabola opens downward. The vertex form equation is
.. y = -(x +5)^2 +5

You might be interested in
After a hike, a group of students equally share 5 boxes of granola bars. Each box has 8 granola bars. Which algebraic expression
SIZIF [17.4K]

Answer: B.

First, we have to have a question for this problem to create a solution. So, the example sentence is how many granola bars does each student get.

Second, an algebraic expression has a variable in it. So since we are trying to find the number of students, the variable is s.

From looking at C and D, we can already eliminate them. This question has mostly multiplication and division words in it, so it can't be addition and multiplication.

Now, we only have A and B left. A tip on  how to figure this out is reading the word problem out thoroughly. I will use B as an example. 5 boxes of granola bars were multiplied by the number of granola bars each student got. From reading this, it makes more sense. But it does change the example sentence, though.

I hope this helped and this is the right answer!

8 0
3 years ago
Find the value of x in the triangle shown below
zlopas [31]

Answer:

x = 96

Step-by-step explanation:

x = 180 - (34 + 50)

x = 180 - 84

x = 96

<em>You are smart, remember that! You just have a little trouble with this problem, that's all! </em>

<em>Hope that helps!</em>

<em>-Sabrina</em>

8 0
3 years ago
Read 2 more answers
38+7k=8(k+4)<br> 3(1-3x)=2(-4x+7)
Natasha_Volkova [10]

Answer:

k=6 and x=-11. Another way to say it is 6,11.

Step-by-step explanation:

I used a System of equations calculator. I put the link below if you ever need it. It has helped me out a lot. Good luck on your test!

https://www.mathpapa.com/system-calculator.html

8 0
4 years ago
PLS HELP WILL GIVE BRAINLY!!
Artist 52 [7]

Answer:

24 units ²

Step-by-step explanation:

In this problem, we are given the circumference of a triangle (after finding the perimeter) and want to find the area of a circle with that circumference. Since the area of a circle is a function based on its radius, we can use the circumference to find the radius to find the area.

First, we can figure out the perimeter of the triangle, which is equal to the sum of its sides. The perimeter is 6+4+7.21 = 17.21 units.

Next, the circumference of a circle is equal to π * diameter = π * 2 * radius. Using 3.14 for π and r for radius, we get

3.14 * 2 * r = 17.21

6.28 * r = 17.21

divide both sides by 6.28 to isolate r

r ≈ 2.74

Furthermore, to find the area from the radius, we can use

area = πr². Plugging 2.74 in for r, we get

2.74² * 3.14 = area

≈23.6, rounding up to 24 units ²

3 0
3 years ago
If a bag contains 12 quarters, 6 dimes, and 18 nickles, what is the part-to-whole ratio of nickles to all coins?
gladu [14]
There are 18 nickels and 36 total coins
18:36 is your original proportion, but we can simplify.
Divide by 2
9:18
Divide by 9.
1:2 is your final answer.
A.) is correct.
5 0
3 years ago
Read 2 more answers
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