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prohojiy [21]
3 years ago
14

Solve the equation 2x2 + 13x + 15 = 0 by factoring. Show all steps.

Mathematics
1 answer:
natita [175]3 years ago
4 0

Answer:

(2x + 3)(x + 5)

Step-by-step explanation:

2x² + 3x + 15 = 0

(2x + 3)(x + 5)

2x + 3 = 0

2x = -3

x = -3/2

x + 5 = 0

x = -5

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Deepa has 57. She has 4 times as much money as Gaurav. How much
Readme [11.4K]

Answer:

42.75 dollars more

Step-by-step explanation:

57/4= 14.25

Gaurav has 14.25 dollars

57-14.25=42.75

therefore Deepa has 42.75 more dollars than Gaurav

6 0
3 years ago
PLS HELP I WILL MARK BRAINLIST AND GIVE THANKS!!
DanielleElmas [232]

Answer:

25(7)=175

Step-by-step explanation:

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5 0
3 years ago
The Ride-It Store rents bicycles.The cost is $8.50 for 1 hour, $13.65 for 2 hours,$18.80 for 3 hours, and $23.95 for 4 hours.If
astraxan [27]

Answer:

in six hours it would be $34.25

Step-by-step explanation:

The computation of the total cost for 6 hours is shown below:

For one hour it would be $8.50

For two hours

= $13.65 - $8.50

= $5.15

For three hours

= $18.80 - $13.65

= $5.15

For four hours

= $23.95 - $18.80

= $5.15

For five hours

= $23.95 + $5.15

= $29.10

For six hours

= $29.10 + $5.15

= $34.25

Hence, in six hours it would be $34.25

5 0
3 years ago
The Latin Club charted a bus to travel to and participate in a state competition. The cost for each adult to ride the bus was $2
Virty [35]
$25a + $15s =$305
a + s = 17
a = 17 - s

$25a +$15s =$305
$25(17-s) + $15s=$305
425-25s +15s = $305
425-10s=305
-10s=305-425
-10s= -120
-10s/-10 = -120/-10
s = 12

a+ 12 = 17
a = 5

Check
$25a + $15s =$305
$25(5) + $15(12) =$305
125 + 180 = 305
305 = 305

8 0
3 years ago
29. Martin has some dollar notes. 20% of the notes are $10 notes, 40% of
Katena32 [7]

Answer:

  • 225 notes

Step-by-step explanation:

Let the number of notes is x.

<u>20% of notes is: </u>

  • 0.2x

<u>40% of the remainder is: </u>

  • 40% of 0.8x, so it is
  • 0.8x*0.4 =
  • 0.32x

<u>Remaining notes are:</u>

  • x - 0.2x - 0.32x =
  • 0.48x

<u>Total of the notes:</u>

  • 0.2x*10 + 0.32x*5 + 0.48x*2 = 1026
  • 2x + 1.6x + 0.96x = 1026
  • 4.56x = 1026
  • x = 1026/4.56
  • x = 225
5 0
2 years ago
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