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mash [69]
3 years ago
9

GIVING BRAINLIEST. A parabola opens to the left. Which could be the equation of the parabola?

Mathematics
1 answer:
GrogVix [38]3 years ago
4 0
D is the answer.  That equation is the only one that results in a parabola opening towards the left.
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Use inverse operations to love each equation--
Dominik [7]

a.) you start with 19=h/3-8 so you add 8 to both sides then you simplify 19+8 to 27 so the equation then becomes 27=h/3 from there you multiply each side by 3 so its 27*3=h then you simplify 27*3 which leaves you with 81=h u then switch it around and your final answer h=81

b.) you start with 0.6x +0.8=1.4 first you subtract 0.8 from both sides so the equation is 0.6x=1.4-0.8 then you simplify 1.4-0.8/ so it then becomes 0.6x=0.6 u then divide both sides by 0.6 so the equation is now x=0.6/0.6 you then simplify 0.6/0.6 so you are left with x=1

7 0
3 years ago
Ignore outside work find all missing variables and measures of each angle**
borishaifa [10]

Answer:

y= 18

42°

x=60

60°

Step-by-step explanation:

because of vertical angles theorem, 2y+6=8y-102

add 102 to 6

2y+108=8y

subtract 2y from 8y

108=6y

y= 18

now plug in to each equation for angles

2(18)+6= 42°

8(18)-102= 42°

now I dont think you can solve for x and y in an equation. 3x=180

divide 3 from 180

180/3 = 60

x=60

plug 60 into 3x=180 and get 180°.

angles for x are 180°

if I'm incorrect on the X value someone please correct me.

I hope this helps!❤

8 0
3 years ago
The equation of the inner circle is x^2+y^2-8x-6y-11=0 and CB=2. Which statements are correct? Select all that apply.
nata0808 [166]

Answer:

Radius of the inner circle is 6

The centers of the circle lie at (4,3)

Step-by-step explanation:

I just took it

3 0
3 years ago
An airplane is preparing to land at an airport. It is 41,300 feet above the ground and is descending at the rate of 3,100 feet p
MissTica

9514 1404 393

Answer:

  • after 7 minutes
  • 19,600 feet

Step-by-step explanation:

Here's the "pencil and paper" solution:

  The two altitude equations are ...

  • y = 41300 -3100x
  • y = 2800x

They can be solved by setting the expressions for y equal to each other.

  2800x = 41300 -3100x

  5900x = 41300

  x = 41300/5900 = 7

  y = 2800·7 = 19600

The planes will both be at 19,600 feet after 7 minutes.

_____

Attached are solutions from a graphing calculator, and from a calculator app that is able to solve systems of equations.

I find the graphing calculator the easiest to use. I can enter equations using a keyboard, and the solution is displayed in a form that can be copied and pasted.

The calculator app on my phone requires equation entry using a small on-screen keyboard, with multiple key hits required to access some functions. (y is obtained by hitting the x key twice, for example.)

The "pencil and paper" solution is not so difficult, but requires a certain amount of writing (or good short-term memory). The solutions for x and y require separate calculations, whereas the other methods give both x and y at the same time.

3 0
4 years ago
Solve the system of linear equations by substitution.
melisa1 [442]

Answer:

(1,10)

Step-by-step explanation:

x=1, y=10

3 0
3 years ago
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