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nasty-shy [4]
3 years ago
5

I will give 25 points and brainiest

Mathematics
2 answers:
vladimir2022 [97]3 years ago
8 0

Answer:

A

Step-by-step explanation:

The top line has a closed dot on 3 & 9 for the x axis, which means it represents 3 ≤ x ≤ 9. The y axis is on 4 for this line so it also works.

The bottom line has a open dot on 3 & a closed dot on 9 for the x axis, which means it represents -9 ≤ x < 3. The y axis is on -8 for this line so it also works.

Note:

If this is confusing or you need clarification, feel free to ask in the comments :)

Ket [755]3 years ago
8 0

Answer:

  A

Step-by-step explanation:

The trick here seems to be to match the domains of the pieces.

  -9 ≤ x < 3 . . . . means exactly that.

The graph that shows the domain of the left piece being [-9, 4) is not the graph of the function.

Graph A matches the function definition.

You might be interested in
The first cube has a side length of 3 units. The second cube has a side length of 5 units. Write an expression that you can use
andrey2020 [161]

Answer:

152 cubic units

Step-by-step explanation:

Volume of a cube = L³ where;

L is the side length of a cube

For the cube of side length of 3 units

Volume of the cube = 3³

Volume of the cube = 27 cubic units

For the cube of side length of 5 units

Volume of the cube = 5³

Volume of the cube = 125 cubic units

Total volume the ice can make = (125 + 27)cubic units

Total volume the ice can make = 152 cubic units

3 0
3 years ago
What is 2+4×17÷3. Please help me
solong [7]
24.6667 

round it, it'll be 25
3 0
3 years ago
Read 2 more answers
Line m has a slope of -3. Another line n is parallel to line m. What is the slope of line n?
kramer

Answer:

-3

Step-by-step explanation:

Since the two lines are parallel, the slopes will be the same.

5 0
4 years ago
jimmy and his family are on their way to visit some family friends who live 780 miles away from them. the distances and average
docker41 [41]

If they drive an average of 60 miles per hour the last day it will take them 2.5 hours.


4 hours at 60 miles per hour = 4*60 = 240 miles

6 hours at 65 miles per hour = 6*65 = 390 miles


This is a total of 630 miles.  There are 780-630=150 miles left; if they average 60 miles per hour, that would be 150/60 = 2.5 hours.


6 0
4 years ago
A piece of wire is 76cm long. It is cut into two unequal parts and each part is bent into a square. The sum of the areas of the
NemiM [27]

Answer:

The length of the shorter part of the wire is 24 centimeters.

Step-by-step explanation:

Let L the total length of the piece of wire, where L-x and x are the perimeters of the greater and lesser squares. All lengths are measured in centimeters. Since squares have four sides of equal length, the side lengths for the greater and lesser squares are \frac{L-x}{4} and \frac{x}{4}. From statement we find that the sum of the areas of the two squares (A), measured in square centimeters, is represented by the following expression:

A = \left(\frac{L-x}{4} \right)^{2}+\left(\frac{x}{4} \right)^{2} (1)

And we expand this polynomial below:

A = \frac{L^{2}-2\cdot L\cdot x +x^{2}}{16} + \frac{x^{2}}{16}

A = \frac{L^{2}-2\cdot L\cdot x +2\cdot x^{2}}{16}

2\cdot x^{2}-2\cdot L\cdot x +L^{2}-16\cdot A = 0 (2)

If we know that L = 76\,cm and A = 205\,cm^{2 }, then the length of the shorter part of the wire is:

2\cdot x^{2}-152\cdot x +2496 = 0

By the Quadratic Formula, we determine the roots associated with the polynomial:

x_{1} = 52\,cm, x_{2} = 24\,cm

The length of the shorter part of the wire corresponds to the second root. Hence, the length of the shorter part of the wire is 24 centimeters.

3 0
3 years ago
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