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Anit [1.1K]
2 years ago
7

Simplify 3(x + 4) + 5x. Write your answer in factored form.​

Mathematics
1 answer:
Anvisha [2.4K]2 years ago
7 0

Answer:

8x + 12

Step-by-step explanation:

3(x + 4) + 5x

3x + 12 + 5x

8x + 12

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(Multiple Choice, 20 pts)
ivanzaharov [21]

Answer:

x = -3, x = 0 is a extraneous solution

Step-by-step explanation:

Step 1: Cross-multiply

3x² = 4x² + 3x

Step 2: Isolate <em>x</em>'s

0 = x² + 3x

Step 3: Factor

0 = x(x + 3)

Step 4: Find roots

x = 0, -3

Step 5: Double check work

Plug in both to see if they both work. Only x = 0 should be extraneous. We now have our answer!

3 0
3 years ago
If theres 12. Cans of juice and 9 packs of crackers how many kids can eat equally
Paha777 [63]
Only 3 kids could eat equally because 3 is the highest number that goes into 12 and 9
5 0
3 years ago
Read 2 more answers
Can someone help me with this question ?
damaskus [11]
Tan52° = x/29

The angle of elevation is 52°, so that must be inside the tan function.

Tan is the ratio of the opposite side to the adjacent side. Jessica’s height is unknown, so we can call that x. The adjacent side of the triangle is the shadow, which is 29’m. Since tan is opposite over adjacent (remember SOH CAH TOA), the fraction must be x/29.
8 0
2 years ago
Solve for d<br> 3(d+12)=8-4d<br> ?????
zysi [14]

Answer:

d=-4

Step-by-step explanation:

the answer is negative 4 have a nice day :)

5 0
3 years ago
A local fish market is selling fish and lobsters by the pound. The fish, f, costs $4.25 a pound, while the lobster, l, costs $9.
malfutka [58]

9514 1404 393

Answer:

  • 7 pounds of fish
  • 18.5 pounds of lobster

Step-by-step explanation:

Let x represent the number of pounds of lobster sold. Then 25.5-x is the number of pounds of fish. The total money made is ...

  4.25(25.5-x) +9.00x = 196.25

  4.75x + 108.375 = 196.25 . . . . . simplify

  4.75x = 87.875 . . . . . . . . . . . subtract 108.375

  x = 18.5 . . . . . . . . . . . . . . . divide by 4.75

The market sold 7 pounds of fish and 18.5 pounds of lobster.

8 0
2 years ago
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