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Phantasy [73]
2 years ago
15

Combine the like terms to create an equivalent expression: -2x-x+8

Mathematics
1 answer:
lara31 [8.8K]2 years ago
7 0

Answer:

-3x+8

Step-by-step explanation:

-2x-x+8=

-3x+8

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Find all missing angles.
Monica [59]
1=51
2=34
3= 95 (i think)
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6 0
2 years ago
What is the equation of a parabola with a focus (-2,4) and directrix y = 0?
Ronch [10]
The general form of a parabola  when using the focus and directrix is:
(x - h)² = 4p(y - k) where (h, k) is the vertex of the parabola and 'p' is distance between vertex and the focus.  We use this form due to the fact we can see the parabola will open up based on the directrix being below the focus.  Remember that the parabola will hug the focus and run away from the directrix.  The formula would be slightly different if the parabola was opening either left or right.

Given a focus of (-2,4) and a directrix of y = 0, we can assume the vertex of the parabola is exactly half way in between the focus and the directrix.  The focus and vertex with be stacked one above the other, therefore the vertex will be (-2, 2) and the value of 'p' will be 2.  We can now write the equation of the parabola:
(x + 2)² = 4(2)(y - 2)
(x + 2)² = 8(y - 2)  Now you can solve this equation for y if you prefer solving for 'y' in terms of 'x'
5 0
3 years ago
If carpet cost $8 per square foot. How much money will it cost to put new carpet in all the rooms in the house?
Stolb23 [73]
How many feet is the room
6 0
3 years ago
Evaluate the expression:<br><br>(1/3)⁴ = ?​
vlabodo [156]

Answer:

1/81

Step-by-step explanation:

\frac{1*1*1*1}{3*3*3*3} multiply them

hope this helps :/

5 0
3 years ago
Read 2 more answers
the elves were working when the head elf came in and there was only 2 weeks left until christmas. what percentage of the month w
valentina_108 [34]

Answer:

45 %

Step-by-step explanation:

Time left until Christmas = 2 weeks

                                         = 2 * 7 days                [since 1 week = 7 days]

                                         = 14 days

Number of days in December = 31

Percentage of the month left before Christmas = \frac{Time left until Christmas}{Number of days in December} * 100

= \frac{14}{31} * 100

= 0.45 * 100

= 45 %

4 0
3 years ago
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