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Flura [38]
3 years ago
7

How do you do these?

Mathematics
1 answer:
fiasKO [112]3 years ago
4 0
I'll do #6. 

The axis of symmetry is the x-coordinate of the vertex, which in this case, is (0,-4). So the axis of symmetry is x=0. 

The vertex is in the above answer. Since this is a quadratic function, there are no boundaries, the domain is All Real Numbers. 

The range goes up forever <em>from </em><em>the vertex. </em>The vertex is (0,-4), so, the minimum y value is -4. The range is y is greater than or equal to -4, or in interval notation: [-4,infinity] 

Hope this helps!

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LMNP is a rectangle. If LN = 9x – 14 and MP = 7x + 4, find the values of x, LN, and MP.
Fittoniya [83]
I am thinking of a rectangle that has the two sides parallel to one another. Set the two functions equal to one another, so

9x-14=7x+4

After a bunch of algebra and math magic, 2x=18 => x=9

So if you just insert 9 into both equations, both will end up with a value of 67, so it ends up looking like a right triangle. Don't do that. Instead, to find the rectangle widths, use 9x-4 (+10 added to intercept) instead, while keeping 7x+4, so that the intercepts match.

LN) 9x-4 = 9(9)-4 = 81-4 = 77
MP) 7(9)+4 = 63+4 = 67

*If you are also looking for the diagonals, use Pythagorean Theorem 77^2+67^2=(hypotenuse)^2*
7 0
2 years ago
victor needs 30 feet of rope. the rope he want to buy is sold by the yard. he know that there are 3 feet in the 1 yard. how many
solmaris [256]

Answer:  10 yards

Step-by-step explanation:

Covert 30  feet into yards to find how many yards he should buy.

\frac{30}{3}  = \frac{x}{1}     Solve by cross product

3x = 30  

x = 10  

3 0
3 years ago
Help&amp;EXPLAIN <br> •••••••••••••••••••
TiliK225 [7]

Answer:

68cm^2

Step-by-step explanation:

Well there's not much to explain - the problem statement does it for us.

The surface area is equal to the sum of areas of the walls. There's 2 l*w walls, 2 l*h walls and 2 h*w walls.

SA = 2*l*h + 2*l*w + 2*h*w

SA = 2*4cm*6cm + 2*4cm*1cm + 2*6cm*1cm = 48cm^2 + 8cm^2 + 12cm^2 = 68cm^2

5 0
3 years ago
Ax-4y=-1. (6,1) find coefficient write complete equation
Rom4ik [11]
I think the answer is a=2
7 0
2 years ago
the difference between the heights of your chair and your desk is -10 1/4 inches. the height of your desk is 29 3/4 inches. what
OLEGan [10]
Since you said the height of your chair and you desk, chair would go first when subtracting.
C= chair
c - 29.75 = -10.25
 + 29.75  = + 29.75
c= 19.5
So, you chair is 19.5 (19 1/2) inches tall.
8 0
3 years ago
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