3 years ago

Identify the equation of the graph

1 answer:

6 0

This has a vertex at (1,-5) and otherwise looks like y=x^2; the two points one x unit away from the vertex are also 1 y unit away, the two points two away are 4 units higher, etc.

$y = (x- 1)^2 - 5$

That's in vertex form. We're not shown any choices; let's multiply this out.

$y = x^2 - 2x - 4$

Either one of those.

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Find the value of x round to the nearest tenth

galina1969 [7]

Answer:

8.2

Step-by-step explanation:

sin^-1 (8.2/21) is 22.984 which is pretty close to 23

5 0

3 years ago

If (x) = 3x^2 + 10, what is f(-7)

lara31 [8.8K]

Answer:

f(x) = -139

Step-by-step explanation:

f(x) = 3x^2 + 10 If f(-7)

f(-7)= 3 * -7^2 + 10

F(-7) = 3 * -49 + 10

f(-7) = -147 + 10

f(-7) = -139

3 0

3 years ago

Read 2 more answers

The first step in determining the solution to the system of equations, y = -x2 - 4x - 3 and y = 2x + 5, algebraically is to set

aliya0001 [1]

Answer:

See below

Step-by-step explanation:

Next step is to gather 'like' terms

-x2 - 4x -3 = 2x + 5.

x^2 + (4x + 2x) + (3+5) = 0 then simplify

x^2 + 6x + 8 = 0 then factor

(x+4)(x+2) = 0

so either of these terms = 0

x+4 = 0 means x = -4

x+ 2 = 0 means x = - 2

8 0

2 years ago

Jenny wants to rent a truck for one day. She contacted two companies. Laguna's Truck Rentals chargers $20 plus $2 per mile. Salv

KIM [24]

Answer:

After 20 miles.

Step-by-step explanation:

2 x 20 + 20= 60

3 x 20=60

60=60

5 0

3 years ago

i need someone thats good at math pls help me i dont have the dot plot but i need the mena answer the median sentence and median

Verdich [7]

Answer:

to work out the median you put the numbers in ascending order and then cross one number from the left and right side one at a time until you reach the middle, if you have lots of numbers then add one to the number of items in the data and divide by two.

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3 years ago