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3 years ago

Carmen bought candy to go into

Mathematics

2 answers:

alexandr1967 [171]3 years ago

5 0

Answer:

12 treat bags

Step-by-step explanation:

notka56 [123]3 years ago

5 0

I believe 12 because 84/7 is 12

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Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the pre

artcher [175]

Answer: The proportion of new car buyers that trade in their old car has statistically significantly decreased.

Step-by-step explanation:

Since we have given that

p = 48% = 0.48

n = 115

x = 46

So, $\hat{p}=\dfrac{46}{115}=0.40$

So, hypothesis would be

$H_0:\ p=\hat{p}\\\\H_a:p$

So, test value would be

$z=\dfrac{p-\hat{p}}{\sqrt{\dfrac{p(1-p)}{n}}}\\\z=\dfrac{0.48-0.40}{\sqrt{\dfrac{0.48\times 0.52}{115}}}\\\\z=\dfrac{0.08}{0.0466}\\\\z=1.72$

At 10% level of significance, critical value would be

z= 1.28

Since 1.28 < 1.72

So, we will reject the null hypothesis.

Hence, the proportion of new car buyers that trade in their old car has statistically significantly decreased.

6 0

3 years ago

The midpoint of AB = ([?],[ ])

3241004551 [841]

Answer:

(0,0)

Step-by-step explanation:

$x_{m}=\frac{-2+2}{2}=0\\y_{m}=\frac{-2+2}{2}=0\\$

4 0

3 years ago

A kite descends to the ground from a height of 32 feet. Use an integer to describe the descent.

nydimaria [60]

32-x=0; with x equaling the amount descended or -32.

8 0

3 years ago

6 3/5-2 4/5=?<br> Show how you got the answer

Viktor [21]

Hello there,

Okay so the question is asking us to subtract the two mixed numbers, 6 3/5 - 2 4/5, from each other...

The first step would be to change the mixed numbers to improper fractions:

6 3/5 as improper fraction would be 33/5
2 4/5 as improper fraction would be 14/5

Now we need to make sure that the denominators are the same and in this case they are.

Simply subtract 14 from 33 and you would get 19 and the denominator stays the same so you would get 19/5.

Now turn 19/5 into a mixed number and you would get 3 4/5

The answer to the 6 3/5 - 2 4/5 would be 3 4/5.

Hope I helped,

Amna

7 0

2 years ago

A park has a large circle painted in the middle of the playground area. The circle is divided into 444 equal sections, and each

balu736 [363]

Answer:

The area of each section of the circle is $A=25\pi\ m^{2}$

Step-by-step explanation:

we know that

Each section represent a quarter of circle

The area of a quarter of circle is equal to

$A=\frac{1}{4}\pi r^{2}$

we have

$r=10\ m$

substitute

$A=\frac{1}{4}\pi (10)^{2}$

$A=25\pi\ m^{2}$

7 0

3 years ago