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Eduardwww [97]
3 years ago
13

Solve for h. 7/5h - 2= -3/5h +7 Please show work!

Mathematics
2 answers:
Bas_tet [7]3 years ago
6 0
Hi there!

Solving for h is easy. Below are the steps to seeing what it's value is.

1) Simplify both sides of the equation

7/5h + -2 = -3/5h + 7
7/5h -2 = -3/5h + 7

2) Add 3/5h to both sides

7/5h - 2 + 3/5h = -3/5h + 7 + 3/5h
2h = 2 = 7

3) Add 2 to both sides

2h - 2 + 2 = 7 + 2
2h - 2 = 7

4) Divide both sides by 2

2h/2 = 9/2

h = 9/2

Hope this helps! :)
netineya [11]3 years ago
3 0
7/5h+3/5h-2=7
10/5h-2=7
2h=11
h=5.5
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Based on a poll conducted by the Centers for Disease Control, 862 of 1013 randomly selected adults said that they always wear se
ivolga24 [154]

The confidence interval is  0.028, 0.872

<h3>Given </h3>

862 of 1013 randomly selected adults  wear seat belts.

The 95% confidence interval for the proportion of adults who always wear seat belts.

<h3>What is confidence interval?</h3>

A Confidence Interval is defined as a range of values we are sure our true value lies within it.

<h3>What is 95% confidence interval?</h3>

A 95% confidence interval is defined as that if we take 100 different samples and compute a 95% confidence interval for each sample, then approximately 95 of the 100 confidence intervals will contain the true mean value.

= 862/1013 = 0.85

At a 95% confidence interval ,the critical value is z_{0.025}  = 1.96

The 95% confidence interval for proportion is

\widehat p +/- z0.025 * sqrt(\widehat p * (1 - \widehat p)/n)

= 0.85 +/- 1.96 * sqrt(0.85 * (1 - 0.85)/1013)

= 0.85 +/- 0.022

= 0.028, 0.872

The sample should use at least 10 successes and 10 failures.

n * \widehat p = 1013 * 0.85 = 861 > 10

n * (1 - \widehat p) = 1013 * 0.15 = 152 > 10

As the sample size is larger, we can use an approximate formula for the standard error.

Learn more on Confidence intervals here:

brainly.com/question/8961482

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3 0
2 years ago
Use the functions f(x) = 4x − 5 and g(x) = 3x + 9 to complete the function operations listed below.
Sindrei [870]
Hello : 
<span>f(x) = 4x − 5 and g(x) = 3x + 9
</span><span>(f + g)(x) = f(x) +g(x) = (4x-5) +(3x+9)
</span><span>(f + g)(x) =7x +4
</span><span>(f ⋅ g)(x) = f(x) × g(x) = (4x-5)(3x+9) = 12x² +36x -15x-45
</span>(f ⋅ g)(x) = 12x² +21x -45
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</span><span>f[g(x)] = 12x +31</span>
5 0
4 years ago
The bell family’s bill at the restaurant totaled $34.62, and the bells leave the standard tip of 15% of their total bill. How mu
Neporo4naja [7]

Answer

39.81

Step-by-step explanation:

First I converted the percent to a decimal which was 0.15

Then I multiplied 0.15 by 34.62 which was 5.193

Lastly I added 5.193 by 34.62 which was 39.813

I rounded it to 39.81

<u><em>Answer 39.81 </em></u>

8 0
3 years ago
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