Help! please and thank you!!

Answer:

If all of the observed values in a sample are close to the sample mean, the standard deviation will be small (i.e., close to zero), and if the observed values vary widely around the sample mean, the standard deviation will be large. If all of the values in the sample are identical, the sample standard deviation will be zero.

Step-by-step explanation:

Answer:

The statement that best describes the numerical patterns is;

The rule for mapping Pattern A to Pattern B is "multiply by 2"

Step-by-step explanation:

The given two numerical patterns are;

Pattern A: 4, 8, 12, 16, 20

Pattern B: 8, 16, 24, 32, 40

Therefore;

The ratio of the corresponding terms of Pattern B and A are;

8/4 = 16/8 = 24/12 = 32/16 = 40/20 = 2

We multiply a value in pattern A by 2 to obtain a corresponding value in Pattern B

Therefore the rule for mapping Pattern A to Pattern B is "multiply by 2".

Answer:

Multiply by 2! Basicly D!

if i get this wrong i am terribly sorry.

Answer:

12

Step-by-step explanation:

A : B

1 : 3

Since we know that B is 3 times of A and A is 4...

1 unit = 4

3 units = 4 x 3 = 12

Answer:

Yes, 1:3.

Step-by-step explanation:

Each of the numbers on figure 2 are 3 times the number on figure 1.

Answer:

1. b & d

2. d

Step-by-step explanation:

no fractions, decimals can be in a standard form equation

Answer:

it's 9 or 21

Step-by-step explanation:

Answer:

Her solution is correct

(6-2)^2 + (8-3)^2

=(4)^2 + (5)^2

=16 + 25

=41

Answer:

A≈153.94mi²

Step-by-step explanation:

A = πr2 = π · 72 ≈ 153.93804mi²

Answer:

x = 2

Step-by-step explanation:

-8(x-6) = 32 (distribute)

-8x+48 = 32 (subtract 48 from both sides)

-8x = -16 (divide)

x = 2

Answer:

x = 2

Step-by-step explanation:

Divide both sides :

−8(x−6)=32

Divide both sides of the eqaution by -8 :

x - 6 = -4

Move the constant to the right :

x - 6 = -4

Move the constant to the right - hand side and change its sign :

x = -4 + 6

Calculate :

x = -4 + 6

Calculate the sum :

x = 2

Therefore, the answer is x = 2

Answer:

The answer is D

Step-by-step explanation:

A 180 rotation on 1,1 which is the center will rotate it onto itself.

Answer:

14

Step-by-step explanation:

to determine the answer

Subtract the amount she wants to tip from the total amount of money she wants to spend

$27.50 - $4 = $23.50

Let m = total miles

the total miles she intends to drive can be determined using this equation

$23.50 = $6 + $1.25m

Collect like terms

$23.50 - $6 = $1.25m

$17.50 = £1.25m

Solve for m

17.50 / 1.25 = 14

Answer:

6

Step-by-step explanation: not 6

Answer:

x = ±7

x=7, -7

Step-by-step explanation:

x^2 = 49

Take the square root of each side

sqrt(x^2) = sqrt(49(

x = ±7

Answer:

$6.50/lb

Step-by-step explanation:

4.68/0.72 = $6.50/lb

Answer:

Yes. the relation is a function

Step-by-step explanation:

Here, we want to check if the relation is a function

if a relation is a function, then every x-values (input values) will have one y-value

No two output values (y values) will have a single x value

Looking at the pairs;

It is a function

Although two x values have same y value; 2 and 3 to 8; no two y values have same x value

Hence, the ordered pairs is a function

Answer:

44.4

Step-by-step explanation:

7 4/10x5=37

37+7 4/10=44.4

Answer:

Step-by-step explanation:

[tex]a_{n+1}=a_n\cdot r[/tex]

So, if the common ratio is 5 the next term is always 5 times the previous term.

Answer: A , C and F

Step-by-step explanation:

Answer:

y=-3/2x+13

Step-by-step explanation:

Convert to slope-intercept form (y=mx+b):

-3x+2y=10

-3x-10+2y=0

-3x-10=-2y

-3/2x-5=y

y=-3/2x-5

Parallel lines have the same slope, so the slope of the equation will be m₁=m₂ where -3/2=-3/2

Solving for b, the y-intercept, we get:

y=-3/2x+b (Equation so far)

7=-3/2(4)+b [Plugging in (4,7)]

7=-12/2+b

7=-6+b

13=b

Therefore, the equation of the line that is parallel to the line -3x+2y=10 and goes through the point (4,7) is y=-3/2x+13

Answer:

C.

Step-by-step explanation:

-2(x - 5)

= -2*x - 2*-5

= -2x + 10.

Answer:

c I do believe

Step-by-step explanation:

can you help me with this question is the correct answer b

Answer:

2y bigger or same -12-4y is correct

Step-by-step explanation:

Y=1

2=-12-4×1

2=-16

2 is bigger

Y=-2

-4=-12-4×(-2)

-4=-4 it's same

Hope it helps you! .........

Answer:

n^2 + 2n.

Step-by-step explanation:

n       =       1     2     3     4     5

term t =     3    8     15   24   35

Diffs  =          5    7      9     11

                        2     2     2             - so the nth term contains n^2.

n^2   =       1     4      9    16    25

t - n^2 =    2    4      6     8     10

This is an arithmetic sequence with nth term = 2 + (n-1)2 = 2n

So the nth term of the quadratic sequence = n^2 + 2n.

Answer:

30,000 divided by 1.23/100 then multiply 30,000 by 0.0123 the answer is 369, hope this helps

Step-by-step explanation:

Answer:

32 km/ hr

Step-by-step explanation:

Given that :

Speed of car = 24km/ hr

Time taken =. 80 minutes = 80 / 60 = 1.33333 hours

The distance traveled :

Speed * time

24 km/hr * 1.333333 = 32 km

Speed required to complete 32 km. Journey in 60 minutes = 1 hour

Speed = distance / time

Speed = 32 km / 1 hour

Speed = 32 km/ hr

Answer:

x=1. (1, 2)

x=2. (2, 5)

Step-by-step explanation:

i hope this helps :)

Answer:

The correct answer is letter B, 0.7

Step-by-step explanation:

Hope this help