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Phantasy [73]
3 years ago
8

–0.4(3x – 2) + StartFraction 2 x plus 4 Over 3 EndFraction for x = 4

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
4 0

Answer:

0

Step-by-step explanation:

Given

- 0.4(3x - 2) + \frac{2x+4}{3} ← substitute x = 4 into the expression

= - 0.4(3(4) - 2) + \frac{2(4)+4}{3}

= - 0.4(12 - 2) + \frac{8+4}{3}

= - 0.4(10) + \frac{12}{3}

= - 4 + 4 = 0

kenny6666 [7]3 years ago
3 0
0 also thanks for putting the whole thing most people don’t so it hard to understand lol
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Adult entrance fees to amusement parks in the United States are normally distributed with a population standard deviation of 2.5
kondor19780726 [428]

Answer:  1.509

Step-by-step explanation:

The formula of Margin of Error for (n<30):-

E=t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 22

Level of confidence = 0.99

Significance level : \alpha=1-0.99=0.01

Using the t-distribution table ,

Critical value : t_{n-1, \alpha/2}=t_{21,0.005}= 2.831

Standard deviation: \sigma=\text{ 2.5 dollars }

Then, we have

E=( 2.831)\dfrac{2.5}{\sqrt{22}}\approx1.509

Hence, the margin of error for a 99% confidence interval for the population mean =1.509

4 0
3 years ago
Find the value of S for an infinite geometric series with r= 1/6 and a1=10
Lelu [443]
S=a1/1-r=10 x 6/5 = 12
5 0
2 years ago
Help help help math please last one be honest
nadya68 [22]

Answer:

122 degrees

Step-by-step explanation:

The two intersecting lines are parallel for this problem, which means that the angle next to angle3 is the same degree measure as the one that is 58 degrees.

Also, remember that two angles next to each other on a straight line are supplementary, meaning that they add to 180 degrees.

When keeping these two things in mind, you can solve like this:

180 = angle3 + 58

180 - 58 = angle3

angle3 = 122

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5 0
2 years ago
FIND THE DOMAIN AND RANGE!!!!
Rina8888 [55]
For the domain, you would find that all the numbers that go across in the x axis. In this case -3 is less than or equal to x which is less than or equal to 4. Same with the range, different numbers. -3 is less than or equal to y which is less than or equal to 2. Hope this helped!
7 0
2 years ago
Which statement defines a translation?
Vlad [161]

Answer:

I like the the answer so I think that it is C

8 0
1 year ago
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