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AfilCa [17]
3 years ago
9

X^2 Co+8x=9 cmpleting the Square

Mathematics
1 answer:
juin [17]3 years ago
8 0
This needs more information
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The length of a room is 4 feet less than twice its width. The perimeter of
AlladinOne [14]

L=2W-4

PERIMETER=2L+2W

58=2(2W-4)+2W

58=4W-8+2W

58=6W-8

6W=58+8

6W=66

W=66/6

W=11 ANS. FOR THE WIDTH.

L=2*11-4

L=22-4

L=18 ANS. FOR THE LENGTH.

PROOF:

58=2*18=2*11

58=36+22

58=58

5 0
2 years ago
What is the greatest common factor of 10, 20, and 50?
Viefleur [7K]

Answer:

10

Step-by-step explanation:

first you need to find the prime factors of the three numbers

ex:

prime factor of 18= 2*3*3

prime of 24=2*2*2*3

there is one 2 and one 3 in common

greatest common multiple 2*3=6

so the greatest common multiple is ten because it is the only one that can divide between all three evenly.

10=10/10=1\\20=20/10=2\\50=50/10=5

so 10 is your answer

6 0
2 years ago
Alex is practicing his dives at a pool. He dives from a dividing board that is 21 feet above the surface of the water. His dive
leonid [27]

Answer:

NO. Alex was wrong.  

The total dive distance is 21 + 17 = 38 feet

Step-by-step explanation:

Alex was wrong because his direction of diving is from above the water through the surface of the water to under the water.

So his direction of travelling is not opposite but the same.

Therefore the total distance traveled by Alex = distance traveled from the diving board to the water surface + distance traveled from the water surface to down below the water  

Distance traveled from the diving board to the water surface = 21 feet

Distance traveled from the water surface down below the water = 17 feet  

Total distance traveled by Alex = 21 feet + 17 feet

   = 38 feet.

Thus, Alex was wrong because the the total distance traveled by Alex was 38 feet.

6 0
3 years ago
A car can travel 120km ik 2 hours How long will it take the car to travel 300km
ehidna [41]
It would take the car 5 hours to travel 300km.

Equation used to solve: (120÷2)×6
3 0
3 years ago
Read 2 more answers
Find the slope of the line that passes through (3, 7.5) and (7, 17.5).​
aalyn [17]

Answer:

5/2

Step-by-step explanation:

The formula for slope can defined as y2-y1/x2-x1. So we'll take 17.5-7.5 which is 10. 7-3 is 4. Now we have 10/4. This can be simplified to 5/2.

7 0
3 years ago
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