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3 years ago

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=base x height
Given :
Base = 12 in.
Height = 3 in.

Hence,
Area = 12 x 3
= 36 in. square

6 0

3 years ago

Read 2 more answers

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:

Step(i):-

Given that the sample size 'n' = 992

and x = 570

The Population proportion

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

Step(ii):-

The point estimate of the Population proportion is determined by

$E = 2.576 \frac{\sqrt{0.574(1-0.574)} }{\sqrt{992} }$

E = 0.039≅0.04

Final answer:-

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

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

Fofino [41]

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

Factor the expression below -r -8

miv72 [106K]

Answer:

-(r+8)

Step-by-step explanation:

4 0

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

Hope this helps you

4 0

3 years ago