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Korvikt [17]
2 years ago
11

A chemical engineer is trying to increase the amount of the useful product in a reaction. She performs the reaction with her new

equipment 10 times and gets the following amounts of the useful product in grams:
47.1 48.2 48.3 47.5 48.5 48.1 47.2 48.2 48.4 48.3

1. What proportion of the reactions were above the 48 grams threshold?
2. Other chemists typically get 65% of their reactions to produce more than 48 grams. Should the engineer say that she was able to increase the useful product when compared to the other chemists?
Mathematics
1 answer:
enyata [817]2 years ago
5 0

Answer:

1. 70%

2. Yes

Step-by-step explanation:

1. there are 7 that are over 48, and 10 total. so, 7/10, or 70% would be our answer.

2. 70% is greater than 65%, so yes. he did it better than them.

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Write the number in order starting with the smallest 1.06, 1.031,1.306,1.36
Diano4ka-milaya [45]
1.031, 1.06, 1.306, 1.36

If it helps, when you have something that only goes to the hundredths place, add a 0 to the end.
for example, 1.63= 1.630
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For the parent function y=√x what effect does a value of k = -3 have on the graph?
luda_lava [24]

Answer:

Vertical shift of 3 units down ⇒ last answer

Step-by-step explanation:

* Lets revise the translation of a function

- If the function f(x) translated horizontally to the right  

 by h units, then the new function g(x) = f(x - h)

- If the function f(x) translated horizontally to the left  

 by h units, then the new function g(x) = f(x + h)

- If the function f(x) translated vertically up  

 by k units, then the new function g(x) = f(x) + k

- If the function f(x) translated vertically down  

 by k units, then the new function g(x) = f(x) – k

* Lets solve the problem

∵ The parent function y = √x

∵ There is a translation by k = -3

- From the rules above k is for the vertical translation

∵ k = -3

- That means the parent function translated 3 units down

∴ The value of k = -3 makes the graph of the parent function translated

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- For more understand look to the attached graph

# y = √x ⇒ the red graph

# y = √x - 3 ⇒ the blue graph

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%28-5g%5E%7B5%7Dh%5E%7B6%7D%29%5E%7B2%7D%28g%5E%7B4%7Dh%5E%7B2%7D%29%5E4%20%20%20%20%20" id
Elenna [48]
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If she puts 0 in the box she would have a direct variation.

Lydia writes the equation y = 5x - __ with a missing value.

She puts a value in the box and says that the equation represents a direct variation.

We have to choose the correct option from the given options that explain that the equation could represent a direct variation.

When two variables are such that one is a constant multiple of the other, we said they are in Direct variation.

<h3>What is the direct variation?</h3>

In form of y = ax, where y and x are in direct variation.

Consider the given equation y = 5x  - __

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then the equation becomes,

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Option (a) is correct.

To learn more about the direct variation visit:

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