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ser-zykov [4K]
3 years ago
7

What’s the vertex y=-1/2(x+3)^2-1

Mathematics
2 answers:
Gemiola [76]3 years ago
8 0
Use the vertex form,
y
=
a
(
x
−
h
)
2
+
k
y
=
a
(
x
-
h
)
2
+
k
, to determine the values of
a
a
,
h
h
, and
k
k
.
a
=
−
1
2
a
=
-
1
2
h
=
−
3
h
=
-
3
k
=
−
1
k
=
-
1
Find the vertex
(
h
,
k
)
(
h
,
k
)
.
(
−
3
,
−
1
)
Lena [83]3 years ago
7 0

Answer:

vertex = (- 3, - 1 )

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

y = - \frac{1}{2} (x + 3)² - 1 ← is in vertex form

with vertex = (- 3, - 1 )

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The incenter of a triangle is the intersection point of the_____ bisectors
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Step-by-step explanation:

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How many different outcomes are possible if you can choose between a bus or a train, full fare or concession and you can travel
Novosadov [1.4K]
3 pairs of choices give rise to 2^3 = 8 possibilities:
.. bus, full, morning
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7 0
3 years ago
What is the slope of the line graph show below?​
bonufazy [111]

Answer:

The answer is -2

Step-by-step explanation:

slope formula is m= (y2 -y1)/(x2-x1)

m=(3-1)/(0-1)=

m=2/-1 =

m=-2

6 0
3 years ago
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Two communications companies offer calling plans. With Company X, it costs 30¢ to connect and then
tensa zangetsu [6.8K]
<h3>Answer:  n+15</h3>

=======================================================

Explanation:

  • n = number of minutes
  • cost of company X = 3n+30
  • cost of company Y = 2n+15

To find out how much more company X charges, we subtract the two cost expressions

CompanyX - CompanyY = (3n+30)-(2n+15) = 3n+30-2n-15 = n+15 which is the final answer.

--------------

An example:

Let's say you talk on the phone for n = 20 minutes.

Company X would charge you 3n+30 = 3*20+30 = 90 cents

Company Y would charge you 2n+15 = 2*20+15 = 55 cents

The difference of which is 90-55 = 35 cents.

If you plugged n = 20 into the n+15 expression we got, then n+15 = 20+15 = 35 matches up with the previous 35 cents.

This example helps confirm the answer. I'll let you try out other examples.

8 0
2 years ago
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