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2 years ago

13

at the beginning of a chemistry experiment the volume of liquid in a container was 4 milliliters. during the experiment the volu

me dropped to 3 millimeters. find the percent of decrease

1 answer:

Mrac [35]2 years ago

3 0

Answer:

2.0

Step-by-step explanation:

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Which Number has the highest value?<br><br> -25<br><br> 16<br><br> -32<br><br> 34

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Answer:

34

Step-by-step explanation:

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3 years ago

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What is the area of the following trapezoid

nignag [31]

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d. 130

Step-by-step explanation:

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2 years ago

A contractor has submitted bids on three state jobs: an office building, a theater, and a parking garage. State rules do not all

german

Answer:

The following are the answer to this question:

Step-by-step explanation:

In the given question the numeric value is missing which is defined in the attached file please fine it.

Calculating the probability of the distribution for x:

$\to f(x) = 0.19\ for \ x=14\\\\\to f(x) = 0.29 \ for\ x=7\\\\\to f(x) = 0.38\ for \ x=1\\\\\to f(x)=0.14 \ for \ x=0\\$

The formula for calculating the mean value:

$\bold{ E(X)= x \times f(x)}$

$=14 \times 0.19+7 \times 0.29+1 \times 0.38+0\times 0.14\\\\=2.66 + 2.03+0.38+ 0\\\\=5.07$

$\bold{E(X^2) = x^2 \times f(x)}$

$=14^2 \times 0.19+7^2 \times 0.29+1^2 \times 0.38+0^2 \times 0.14 \\\\=196 \times 0.19+ 49 \times 0.29+1 \times 0.38+0 \times 0.14\\\\= 37.24+ 14.21+ 0.38+0 \\\\=51.83$

use formula for calculating the Variance:

$\to \bold{\text{Variance}= E(X^2) -[E(X)]^2}$

$= 51.83 - (5.07)^2\\\\= 51.83 - 25.70\\\\=26.13$

calculating the value of standard deivation:

Standard Deivation (SD) = $\sqrt{Variance}$

$= \sqrt{26.13} \\\\=5.111$

6 0

3 years ago

What is 155.78=2.95h+73.18<br> a. 28<br> b. 36<br> c. 3.6<br> d. none of these

xz_007 [3.2K]

Answer:

a. 28

Step-by-step explanation:

Given:

$155.78=2.95h+73.18$

We need to evaluate given expression to find the value of 'h'.

Solution:

$155.78=2.95h+73.18$

Now first we will apply Subtraction property of equality and subtract both side by 73.18 we get;

$155.78-73.18=2.95h+73.18-73.18\\\\82.6=2.95h$

Now we will use Division property of equality and divide both side by 2.95 we get;

$\frac{82.6}{2.95}=\frac{2.95h}{2.95}\\\\h=28$

Hence After evaluating given expression we get the value of 'h' as 28.

8 0

3 years ago

Tell whether the fractions are equal or not equal to 6/8 and 3/4

yulyashka [42]

Answer:

they are equal

Step-by-step explanation:

3/4 can be converted it 6/8 by multiplying both denominator and nominator by two

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3 years ago