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3 years ago

What is a reasonable percent error in chemistry?

1 answer:

8 0

For physics, we use half the smallest division of the equipment used.
For chemistry, it should be the same.

The formula for percent error: delta(x)/x * 100% = delta(y)/y

Hope I helped :)

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Hits 2) How many solutions does the inequality have?

ozzi

9514 1404 393

Answer:

D) infinitely many

Step-by-step explanation:

There are infinitely many points on any portion of the number line. The shading on the graph indicates all numbers less than or equal to 8 are solutions. There are infinitely many such numbers.

4 0

2 years ago

What is cot(< a)?<br>Reduce fractional answers to lowest terms.

jeka94

Answer:

The value of cot (∠A) = 3/4

Step-by-step explanation:

Given the angle ∠A of a right-angled triangle

The opposite of ∠A = 4

The adjacent of ∠A = 3

We know that the trigonometric ratio

cot (∠A) = adjacent / opposite

= 3/4

Thus, the value of cot (∠A) = 3/4

5 0

3 years ago

Write an equation in slope-intercept form of the line that passes through (6,-2) and (12,1)

yarga [219]

Equation in slope-intercept form of the line that passes through (6,-2) and (12,1) is:

$y =\frac{1}{2}x-5$

Step-by-step explanation:

Given points are:

(x1,y1) = (6,-2)

(x2,y2) = (12,1)

The slope intercept form is:

$y=mx+b$

We have to find the slope first

$m =\frac{y_2-y_1}{x_2-x_1}\\=\frac{1-(-2)}{12-6}\\= \frac{1+2}{6}\\=\frac{3}{6}\\=\frac{1}{2}$

Putting the value of slope

$y = \frac{1}{2}x+b$

To find the value of b, putting (12,1) in the equation

$1 = \frac{1}{2}(12)+b\\1 = 6+b\\b = 1-6\\b=-5$

Putting the values of m and b

$y =\frac{1}{2}x-5$

Hence,

Equation in slope-intercept form of the line that passes through (6,-2) and (12,1) is:

$y =\frac{1}{2}x-5$

Keywords: Equation of line, slope-intercept form

Learn more about equation of line at:

#LearnwithBrainly

8 0

3 years ago

What does s(8) = 6.0 mean in terms of this problem?

Olegator [25]

Hi I think this answer would be b. A is backwards. C and d do not make sense

6 0

2 years ago

Read 2 more answers

Shaun's savings can be modeled by the regression equation y = 6x^2 + 75x+200. Which of the following is the best prediction for

Zolol [24]

Answer:

Step-by-step explanation:

The equation given gives y in terms of x, where y is Shaun's savings and x is the number of months.

<em>We want to know the amount he will save in 25 months, so we can plug in x = 25 into the equation and get a value of y, that is the amount he will save. So:</em>

$y = 6x^2 + 75x+200\\y = 6(25)^2 + 75(25)+200\\y=5825$

D is the correct answer.

7 0

3 years ago