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gtnhenbr [62]
4 years ago
9

PLEASE HELP!!! PLZ!!!

Mathematics
1 answer:
Helen [10]4 years ago
7 0
We can use the vertex form
y = a {(x - h)}^{2}  + k
to find the equation of the graph. We know that a is the coefficient, and since the graph opens upwards and is slightly stretched vertically, we know that a is 1/3. On the graph, we see that the vertex of the parabola is at (0,-1). Therefore, h is 0 and k is -1.
Our vertex form equation is
y =  \frac{1}{3} {x}^{2}  - 1
Which is D
You might be interested in
give an example of parallel lines in the real world. then describe how you could prove that lines are parallel.
worty [1.4K]

Answer:

An example would be the way that the shelves of a bookcase are positioned, they are parallel. Parallel lines are two or more lines that when drawn out infinitely long never intersect.

Step-by-step explanation:


6 0
3 years ago
EXPONENTIAL FUNCTIONS HELP Write the function for each graph described below. the graph of f(x) = 2x reflected across the x-axis
raketka [301]

Answer:

  • -2^x
  • (1/3)^x +5
  • 3^(x +2) -3
  • (1/2)^x -2
  • 4^(x/3)
  • 2^(x -3) +4

Step-by-step explanation:

In general, the transformation ...

  g(x) = f(x -h) +k

translates f(x) right h units and up k units.

The transformation ...

  g(x) = f(x/a)

stretches the graph horizontally by a factor of "a".

The transformation ...

  g(x) = -f(x)

causes the graph to be reflected over the x-axis.

___

Applying the above, we have ...

f(x) = 2^x reflected over x is g(x) = -2^x

f(x) = (1/3)^x translated up 5 is g(x) = (1/3)^x +5

f(x) = 3^x translated by (-2, -3) is g(x) = 3^(x +2) -3

f(x) = (1/2)^x translated down 2 is g(x) = (1/2)^x -2

f(x) = 4^x stretched horizontally by a factor of 3 is g(x) = 4^(x/3)

f(x) = 2^x translated by (3, 4) is g(x) = 2^(x -3) +4

7 0
3 years ago
Last one for real this time!<br> Find the perimeter and area the figure.
Natali5045456 [20]

Answer:

Perimeter = 180

Area = 1080

Step-by-step explanation:

Perimeter is length of all sides added together. 30+78+72 = 180

Area is the length times the height/2 for a triangle. 30*72/2 = 1080

I hope this helped <3

5 0
3 years ago
A number, x, decreased by the sum of 2x and 5<br> Please show work!!!!!! Thank you!!!!
Natali5045456 [20]
Ive got a soulution
the number is 3 times the sum of its digits
45 is added=4+5=9so,a common numbers in 3rd and 9th table
9,18,27,36,45...
27+45=72
2+7=9
or
4+5=9
7 0
3 years ago
Determine the value of a, the arc length in inches intercepted by the angle with a measure of 2.1 radians, given that the radius
seropon [69]

Answer:

Step-by-step explanation:

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Radius, r = 7 inches

θ = pi/4

2π = 360 degrees

180 degrees = π radians

1 radian = 180/π

2.1 radians = 2.1 × 180/π = 120.38 degrees

Therefore,

Length of arc = 120.38/360 × 2 × 3.14 × 7

Length of arc = 14.7 inches rounded up to 1 decimal places

3 0
3 years ago
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