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Hoochie [10]
3 years ago
9

If a given solution has a 10 percent solute concentration, and more solvent is added, the new solute concentration could be:

Mathematics
2 answers:
Gnoma [55]3 years ago
5 0
Five percent is your answer.
stepan [7]3 years ago
3 0
I think the answer is 5% because is you add solvent to a solute, the percentage of solute will be lower

But i'm not sure
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1. What is the area of the figure below?. . . 18 in². 30 in². 36 in². 60 in².
wel
Area of parallelogram<span>=</span><span>base x </span><span>height
Given :
Base = 12 in.
Height = 3 in.

Hence,
Area = 12 x 3
        =  36 in. square</span>
6 0
3 years ago
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7.1.13 Question Help Use the sample data and confidence level given below to complete parts (a) through (d). A research institut
r-ruslan [8.4K]

Answer:

The Point estimate of the Population proportion  E = 0.039≅0.04

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the sample size 'n' = 992

  and                                     x = 570

The Population proportion

                                   p = \frac{x}{n} = \frac{570}{992} = 0.5745

<u><em>Step(ii):-</em></u>

<u><em>The point estimate of the Population proportion is determined by</em></u>

<u><em></em></u>E =   2.576 \frac{\sqrt{0.574(1-0.574)} }{\sqrt{992} }<u><em></em></u>

E = 0.039≅0.04

<u><em>Final answer</em></u>:-

The point estimate of the Population proportion  E = 0.039≅0.04

<u><em></em></u>

6 0
3 years ago
Help me, please... Which two numbers on the number line have an absolute value of 2.75? Select the location of both numbers on t
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Answer:

2.75, and - 2.75

Step-by-step explanation:

Both have an absolute value of 2.75 which is how far away they are from 0.

Hope this helped!

6 0
3 years ago
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Answer:

-(r+8)

Step-by-step explanation:

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3 years ago
The area of a trapezoid is
horrorfan [7]

Answer:

<h2>The answer is 15cm</h2>

Step-by-step explanation:

Let b be the length of the second parallel side

Area of a trapezium is given by

A =  \frac{1}{2} (a + b)h

where

h is the height

a and b are the parallel sides

From the question

Area = 230 cm²

height = 20cm

one of parallel side / a = 8 cm

Substitute the values into the above formula and solve for b

That's

230 =  \frac{1}{2} ( 8 + b) 20

Reduce the fraction with 2

That's

230 = (8 + b) \times 10

Expand the terms

That's

230 = 80 + 10b

10b = 230 - 80 \\ 10b = 150

Divide both sides by 10

We have the final answer as

<h3>b = 15cm</h3>

Hope this helps you

4 0
2 years ago
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