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2 years ago

Write an equation of the parabola in vertex form with the coordinates (-2,6) and (-1,3)

1 answer:

4 0

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A random sample of the amounts for 22 purchases was taken. The mean was $42.97, the standard deviation was $22.82, and the m

Illusion [34]

Answer: a) 84 and b ) 2084

Step-by-step explanation:

Given : Sample standard deviation : s= $22.82

(Population standard deviation is unknown ) , so we use t-test.

Critical value or the 95% confidence intervals : $t_{n-1}*=2.0$

Formula to find the sample size :

$n=(\dfrac{t^*\cdot s}{E})^2$

a) E = 5

$n=(\dfrac{(2)\cdot 22.82}{5})^2$

$n=(9.128)^2=83.320384\approx84$

i.e. Required sample size : n= 84

b) E = 1

$n=(\dfrac{(2)\cdot 22.82}{1})^2$

$n=(45.64)^2=2083.0096\approx2084$

i.e. Required sample size : n= 2084

8 0

2 years ago

1. Write the following rational numbers as quotients of two integers.

Marianna [84]

Answer:

a) -0.5 = -1/2

b) -2/1/4 = -2/4

c) -5/6/7 = -5/42

d) 7.2 = 72/10

Step-by-step explanation:

7 0

1 year ago

Which distance measures 7 units?

GrogVix [38]

Answer:

M to P

Step-by-step explanation:

It goes 7 hops from -1 to 6

3 0

2 years ago

Plot the coordinates

forsale [732]

Answer:

Quadrilateral

Explanation:

there are only for points,

triangle= three points

hexagon= 6 points

pentagon= 5 points

4 0

2 years ago

Read 2 more answers

A bag contains 5 red marbles, 8 green marbles, 6 pink marbles, and 11 yellow marbles. what is the probability of randomly choosi

mamaluj [8]

Answer:

6/19

Step-by-step explanation:

When you add up all the marbled you get 19 marbles and since their are 6 pink marbles you get 6/19. Since 6/19 is already in simplest form then that is your answer.

7 0

2 years ago