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jasenka [17]
3 years ago
7

Solve for x in the equation 3 x squared minus 18 x + 5 = 47.

Mathematics
1 answer:
brilliants [131]3 years ago
7 0

Answer:

x = 3 ± √ 23

Step-by-step explanation:

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1/6(x-5)=1/2(x+6) help
anygoal [31]

Answer: x= -23/2

Step-by-step explanation:

multiply both sides of the equation by 6

x-5=3(x+6)

distribute 3

x-5=3x+18

move variables to lest-hand side and change sign

x-3x=18+5

like terms

-2x=23

the divide both sides by -2

x= -23/2

7 0
3 years ago
The cost is 23$ when___coolers are produced
Savatey [412]

9514 1404 393

Answer:

  97

Step-by-step explanation:

We want to find x when C = 23.

  23 = 0.005x^2 -0.35x +10

  2600 = x^2 -70x . . . . . . subtract 10, multiply by 200

  2600 +35^2 = (x -35)^2 . . . . complete the square

  61.847 +35 = x . . . . . . . square root, add 35 (use the positive result only)

  x ≈ 97 . . . . rounded to integer

The cost is $23 when 97 coolers are produced.

5 0
3 years ago
How many weeks and days are there in 72 days?
earnstyle [38]
72 days and 10 weeks ( 10.2857 I just rounded)
3 0
3 years ago
Read 2 more answers
Emma has one more than twice as many toys as Alice has. Altogether Alice and Emma have 13 toys. How many toys do Emma and Alice
Gre4nikov [31]
Emma has 9 toys and Alice has 4 toys.
6 0
3 years ago
Alexandra worked 5 hours on Monday, 4.5 hours on Tuesday, and 2.5 hours on Wednesday. Which is closest to the mean number of hou
Lilit [14]

5 + 4.5 + 2.5 = 12 ÷ 3 = 4

how I know mean is when you add each together then divide it by how many things you added together so we added 3 things together so just divide your answer by 3.

7 0
3 years ago
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