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3 years ago

What is the square root of 9 pi?

Mathematics

1 answer:

ZanzabumX [31]3 years ago

6 0

Answer:

5.31736155272

Step-by-step explanation:

good luck have a nice day

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Solve the equation z/8 =-3

posledela

Z= -24, i hope this helps :)

4 0

3 years ago

Read 2 more answers

On a standardized exam, the scores are normally distributed with a mean of 250 and

fredd [130]

Answer:

the z-score is within 3

Step-by-step explanation:

first you got to take the standard deviation and add it to the mean since 375 is greater than 250. so the equastion would be

250+50=300+50=350+50=40

so the z-score for the value of 375 is within 3

7 0

3 years ago

3.8b-7 + -2.9b+9 Add the two expressions

mr_godi [17]

0.9b + 2 is the correct answer

3 0

3 years ago

A road has a 10% grade. 1. What is the angle of elevation of the road? 2. If the road is 2km long, how much does it rise?

malfutka [58]

1. m = rise/run
m = 10/100 = 0.1
tan α = 0.1
α = tan^(-1) 0.1
α = 5.71 °
2. 2 km = 2,000 m
x² + ( 0.1 x )² = 2,000²
x² + 0.01 x² = 4,000,000
1.01 x² = 4,000,000
x = 1,990 m
h = 1,990 m * 0.1
h = 199 m
The road rises 199 m.

3 0

4 years ago

The number of corn stalks in each row of field can be modeled by arithmetic sequence.The 5th row in this field has 36 corn stalk

Mice21 [21]

Answer:

a_{n}=20+4(n-1)

Step-by-step explanation:

It is given that the number of corn stalks in rows of the field can be modeled by an arithmetic sequence.

The 5th row has 36 corn stalks. This means 5th term of the sequence is 36. i.e.

$a_{5}=36$

The 12th row has 64 stalks. So,

$a_{12}=64$

In order to write the explicit rule we need to find the first term(a1) and common difference(d) of the sequence.

The explicit rule for the arithmetic sequence is of the form:

$a_{n}=a_{1}+(n-1)d$

Writing the 5th and 12th term in this way, we get:

$a_{5}=a_{1}+4d$

$a_{1}+4d=36$ Equation 1

Similarly for 12th term, we can write:

$a_{1}+11d=64$ Equation 2

Subtracting Equation 1 from Equation 2, we get:

7d = 28

d = 4

Using the value of d in Equation 1, we get:

$a_{1}+4(4)=36\\\\ a_{1}=20$

Thus, for the given sequence first term is 20 and common difference is 4. Using these values in the general explicit rule, we get:

$a_{n}=20+4(n-1)$

7 0

3 years ago