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andreyandreev [35.5K]
3 years ago
6

(20x2-7x-3)-(9x2-12x-5)

Mathematics
1 answer:
BARSIC [14]3 years ago
5 0

Answer:

-17

Step-by-step explanation:

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The floor of a round hut has a diameter of 4 meters. What is the floor's circumference? Use 3.14 for ​.
7nadin3 [17]

Answer:

12.56

Step-by-step explanation:

C= 2 x 3.14 x 2

(the other 2 is half of the circumference)

3 0
3 years ago
Please help me and show your work
morpeh [17]

Answer:

Step-by-step explanation:

y = 3x + 4

Plugin x = 3 in the equation,

y = 3*3 + 4

 = 9 + 4

y = 13

Plugin x = 4 in equation,

y = 3*4 + 4

  = 12 + 4

y = 16

Plugin x = 5 in the equation,

y = 3*5 + 4

  = 15 + 4

y = 19

2) y =x - 7

Plugin x = 10 in the equation

y = 10 - 7

y = 3

Plugin x = 15 in the equation

y = 15 - 7

y = 8

Plugin x = 20 in the equation

y = 20 - 7

y = 13

6 0
2 years ago
Katy is on a path, moving towards a bridge. The given table represents a function that describes Katy’s distance from the bridge
Sophie [7]

Answer:

D : Katy was 300 meters from the bridge, and it took her 6 minutes to reach the bridge.

Step-by-step explanation:

Recall that x represents the time walked

When you see the first entry on the table as: x=0, that means Katy is about to start her walk, and the value to the right which represents her distance from the bridge is 300 meters. So as her walk started she was 300 meters from the bridge.

Now look at the last entry pair at the bottom of the table: the value in the "x" column (that represents the number of minutes she walked) reads: 6, and the value to the right (next column) reads 0 (0 meters from the bridge)

This is telling us that Katy was at the bridge after 6 minutes of walk. So answer D is the correct answer representing the given table of time and distance values.

3 0
3 years ago
You walk 2/15 miles for your chemistry class to Your economics class at a constant speed of 0.8 miles per hour.How long did this
Zolol [24]
<span>speed = 2.5 miles per hour</span>
7 0
3 years ago
What is the solution to the proportion 3y-8/12=y/5? can someone help me do this?
RideAnS [48]
   
\displaystyle\\&#10; \frac{3y-8}{12} = \frac{y}{5}  \\  \\ &#10;5(3y-8)=12y\\\\&#10;15y-40=12y\\\\&#10;3y = 40\\\\&#10;\boxed{y =  \frac{40}{3}}



3 0
3 years ago
Read 2 more answers
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