Find an explicit formula for the arithmetic sequence below. 9, 39/4, 21/2, 45/4, 12, 51/4,...

Which two integers is 42 between? -8 and -7 -5 and -4 -7 and -6 -9 and -8

Karo-lina-s [1.5K]

Answer:

6 and 7

Step-by-step explanation:

we know that 42 will lie between 36 and 49

And 36=6; 49=7

so we can be sure that 42 lies between 6 and 7

3 0

3 years ago

Use a graphing calculator to find the value of the correlation coefficient r and determine if there is a strong correlation amon

Natali [406]

The value of the correlation is -0.0721 and it is a weak negative correlation

<h3>How to determine the correlation coefficient?</h3>

The points are given as:

(12, 28), (15, 50), (18, 14), (21, 28), (24, 36)

Enter the above points in a graphing calculator.

From the graphing calculator, we have the following summary:

X Values

Sum X = 90
Mean = 18
∑(X - Mx)^2 = SSx = 90

Y Values

Sum Y = 156
Mean = 31.2
∑(Y - My)^2 = SSy = 692.8

X and Y Combined

N = 5
∑(X - Mx)(Y - My) = -18

R Calculation

r = ∑((X - My)(Y - Mx)) / √((SSx)(SSy))

This gives

r = -18 / √((90)(692.8)) = -0.0721

So, the correlation coefficient is -0.0721

The above is a negative correlation because it is less than 0 and it is a weak correlation because it is closer to 0 than -1

Hence, the correlation is a weak negative correlation

Read more about correlation coefficient at:

brainly.com/question/27226153

#SPJ1

7 0

2 years ago

Convert the following metric units of weight. a. 40 centigrams to grams b. 53 milligrams to grams c. 0.54 grams to decigrams d.

liubo4ka [24]

Answer:

a) $0.4$ grams

b) $0.053$ grams

c) $5.4$ decigrams

d) $2300$ milligrams

Step-by-step explanation:

a)

To convert centigrams to grams you have to divide by 100.

$40$ centigrams = $\frac{40}{100}$ grams

= $0.4$ grams

b)

To convert milligrams to grams you have to divide by 1000.

$53$ milligrams = $\frac{53}{1000}$ grams

= $0.053$ grams

c)

To convert grams to decigrams you have to multiply by 10.

$0.54$ grams = $0.54*10$ decigrams

= $5.4$ decigrams

d)

To convert grams to milligrams you have to multiply by 1000.

$2.3$ grams = $2.3*1000$ milligrams

= $2300$ milligrams

4 0

3 years ago

What is negative 9 plus 16/7

jekas [21]

Step-by-step explanation:

-9 + 16/7 = ?

First, find out what 16/7 would make in decimal form, by dividing 16 by 7 (Use a calculator if needed)

16 / 7 = 2.3 (In estimation)

So, now you have ' -9 + 2.3 '

= -6.7

7 0

3 years ago

Read 2 more answers

Equivalent fractions of 4/5

Sonbull [250]

$\frac{8}{10} \frac{16}{20} \frac{12}{15}$
Hope this helps :)

5 0

3 years ago

Read 2 more answers