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Sergeeva-Olga [200]
3 years ago
7

Solve for x. 3(3x - 1) + 23 - x) = 0

Mathematics
1 answer:
enot [183]3 years ago
3 0
9x-3+69-3x=0
6x+66=0
6x=-66
X=-11
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Solve:<br> 1 - 2k += = -3k
MariettaO [177]

Answer:

-1

Step-by-step explanation:

1-2k=-3k

1-2k+2k=-3k+2k

     1=-1k

1/-1=-1k/-1

-1=k

3 0
3 years ago
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The instructions for building a kite tell you to begin by cutting a strip of wood to 45 cm in length, but your ruler only measur
Phantasy [73]
If one inch = 2.54 centimeters, then 45 centimeters divided by 2.54 centimeters will give you the amount of inches the piece of wood needs to be.

45/2.54 = 17.72  ---- Rounded to the nearest quarter, would be 17.75 inches.
6 0
3 years ago
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Brian has reduced his cholesterol level by 20% after his last check up. If his original level was 240, what is his cholesterol l
dybincka [34]

Answer:

192

Step-by-step explanation:

20% of 240 is 48

240-48 = 192

8 0
3 years ago
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Need help pls question 3 pls pls pls
MaRussiya [10]

Answer:

maybe 67 ft not sure though

4 0
3 years ago
Jones figures that the total number of thousands of miles that an auto can be driven before it would need to be junked is an exp
romanna [79]

Answer:

0.3678

Step-by-step explanation:

Jones figures that the total number of thousands of miles that an auto can be driven before it would need to be junked is an exponential random variable with parameter 1/20. Smith has a used car that he claims has been driven only 10,000 miles. If Jones purchases the car, what is the probability that she would get at least 20,000 additional miles out of it?

Given that the total number of thousands of miles(X) that an auto can be driven

before it would need to be junked is an exponential random variable with parameter 1/20.

=> X ≅ Exponential(λ= 1/20)

=> f(x) = 1/20 * e^(-x/20) , 0 < x < ∞

=> F(X) = P{X < x} = 1 - e^(-x/20)

The probability that she would get at least 20,000 additional miles out of it.

P{X > 20} = 1-P{X < 20}

P{X > 20} = 1-(1 - e^(-20/20))

= e^(-1)

= 0.3678

6 0
3 years ago
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