a building is 300ft long. on a scale drawing ,1inch =25ft. what is the length of the building in the scale drawing?

Roger will flip a coin 3 times. which 2 events are disjoint?

lorasvet [3.4K]

The two events that are disjoint or mutually exclusive is getting a head and a tail at the same time. It because if you are going to flip a coin the result can either be head or tail but not both. The value of the two events occurring at the same is 0.

5 0

4 years ago

Measurements were taken from snails of the shell weights and the widths of the opercula. Plot a graph of opercula width (y-axis)

joja [24]

Answer:

Yes,there is a significant association shell weight and the widths of the opercula

Step-by-step explanation:

Using a correlation Coefficient calculator :

Given the data above :

The Coefficient of correlation(r) obtained is :

0.7632

Obtaining the test statistic :

T = r² / √(1 - r²) / (n - 2)

T = 0.7632² / √(1 - 0.7632²) / (10 - 2)

T = 0.58247424 / 0.2284528

Test statistic = 2.550

The Pvalue from r score , N = 10

Pvalue(0.7632, 10) = 0.01022

α = 0.05

If Pvalue < α ; reject H0

Pvalue < α ; We conclude that there is a significant association shell weights and the widths of the opercula

5 0

3 years ago

Jeff finds some bugs. He finds 10 fewer grasshoppers than crickets. He finds 5 fewer crickets than ladybugs. If Jeff finds 5 gra

Svet_ta [14]

Ladybugs: 20
Crickets: 15

3 0

3 years ago

Sam scored 36 marks out of 60.Express the marks in percentage

Pani-rosa [81]

Answer:

60%

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

HELP PLEASE! IM STUCK--

belka [17]

9514 1404 393

Answer:

A (first choice), F (last choice)

Step-by-step explanation:

Formulas for arithmetic sequences are generally written in one of two forms. The form you're given here is called an "explicit" formula. For some value of n, you can find the n-th term by evaluating the formula.

The form used in the first three answer choices is called a "recursive" formula. The value of the n-th term depends not on 'n', but on the previous term.

These two forms can be converted to each other like this:

explicit formula ⇔ recursive formula

$A(n)=A_1+d(n-1)\quad\Leftrightarrow\quad\begin{cases}a_1=A_1\\a_n=a_{n-1}+d\end{cases}$

The values of the first term (A₁), the common difference (d), and the term index number (n) are the same in both forms. Once you see this relationship, you should be able to find ...

the first term
the common difference
the other formula for the same sequence

__

Here, the given function tells you ...

A₁ = 5
d = +4

This means the formulas that describe the same sequence are ...

$\square\ \begin{cases}a_1=5\\a_n=a_{n-1}+4\end{cases}\\\\\square\ A(n)=5+4(n-1)$

_____

<em>Additional comment</em>

The commutative property of multiplication tells you that (n-1)(4) = 4(n-1). The order of the operands makes no difference. The given function has the first of these forms, the offered answer choices have the second of these forms.

3 0

2 years ago