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grin007 [14]
3 years ago
8

3/4x + 11 < .3x + 3/4Solve inequality. pls

Mathematics
1 answer:
Rashid [163]3 years ago
7 0
<span><span><span><span>3/4</span>x</span>+11 </span>< <span><span>0.3x</span>+<span>3/4
</span></span></span>First turn 3/4 from both sides to decimals to get..
.75x+11 < 0.3x+.75
And then subtract 0.3x from both sides to get 
.45x+11 < .75
And then subtract 11 from both sides to get
.45x < -10.25
And then divide both sides by .45x to get
x < -22.77777778
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An amusement park would like to determine if they want to add in a new roller coaster. In order to decide whether or not they sh
Rzqust [24]

Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 90% confidence level, hence\alpha = 0.9, z is the value of Z that has a p-value of \frac{1+0.9}{2} = 0.95, so the critical value is z = 1.645.

The sample size and the estimate are given by:

n = 600, \pi = \frac{400}{600} = 0.6667

Hence, the bounds of the interval are given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 - 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6350

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 + 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6984

The 90% confidence interval is given by: (0.6350, 0.6984).

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

5 0
2 years ago
A train leaves the station traveling west at a constant rate of 45 mph. An express train leaves the same station 1 hour later he
Dahasolnce [82]
The train will have been traveling for 4 hours 


train A=45,90,135, 180
train B=0,60,120,180

7 0
3 years ago
Read 2 more answers
A company that manufactuers small canoes has a fixed cost of $14,000. It cost $40 to produce each canoe. The selling price is $8
vesna_86 [32]

Answer:

The company manufactures about 350 canoes, obtaining $ 28,000 after selling them all.

Step-by-step explanation:

Given that a company that manufactures small canoes has a fixed cost of $ 14,000, and it cost $ 40 to produce each canoe while the selling price is $ 80 per canoe, to determine the number of canoes that the company produces and the amount of money it makes after selling them, the following calculation must be carried out:

14/000 / 40 = X

350 = X

350 x 80 = 28,000

Thus, the company manufactures about 350 canoes, obtaining $ 28,000 after selling them all.

3 0
2 years ago
The ratio of the number of cookies to the number of candies in different gift boxes is 5:7. Which table best shows the number of
V125BC [204]

Answer:

-------------------------------------------------------------------

Ratio

--------------------------------------------------------------------

cookies : candies

     5     :     7

--------------------------------------------------------------------

Multiply Ratio by 2

--------------------------------------------------------------------

cookies : candies

  5 x 2   :     7 x 2

     10    :      14

--------------------------------------------------------------------

Multiply Ratio by 3

--------------------------------------------------------------------

cookies : candies

  5 x 3   :     7 x 3

    15     :      21

--------------------------------------------------------------------

Multiply Ratio by 4

--------------------------------------------------------------------

cookies : candies

  5 x 4   :     7 x 4

    20     :     28

--------------------------------------------------------------------

Answer: C

--------------------------------------------------------------------

Step-by-step explanation:

please mark brainliest

5 0
3 years ago
Read 2 more answers
Find the y? 3x + 6y = 12
kari74 [83]

Could you give Brainliest please???

Answer:

y = 2 - 1/2x

Step-by-step explanation:

So we are given the equation 3x + 6y = 12 and are ask to find y.

To find y you must isolate it first.

3x + 6y = 12

(Subtract 3x to isolate the y term)

6y = 12 - 3x

(Divide both sides by 6 to isolate the variable)

y = 2 - 3/6x

(Simplify)

y = 2 - 1/2x

And that is your answer since there is a second variable.

5 0
3 years ago
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