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Kitty [74]
3 years ago
12

Twenty pounds of strawberries are being shared equally by a group of friends.the equation 20 divided by 5=4 represents the divis

ion of strawberries
Mathematics
1 answer:
lions [1.4K]3 years ago
6 0

Answer:

a. 4 represents the amount of pounds of strawberries each friend got.

b. 4 represents the number of friends who were sharing the strawberries.

Step-by-step explanation:

<h3> The complete exercise is: "Twenty pounds of strawberries are being shared equally by a group of friends. The equation 20\div5=4 represents the division of strawberries. </h3><h3>a. If the 5 represents the number of people, what does the 4 represent?</h3><h3>b. If the 5 represents the pounds of strawberries per person, what does the 4 represent?" </h3><h3> </h3>

You need to analize the information given in the exercise.

You know that the total amount of pounds of strawberries that are shared equally is:

Total=20\ lb

a. Then if the group of people is formed by 5 friends, you need to divide the total pounds of strawberries that by 5 in order to calculate the amount of pounds of strawberries each one of them got.

If in the equation 20\div5=4, 5 represents the number of people, then 4 represents the amount of pounds of strawberries each friend got.

b. If each person got 5 pounds of strawberries, you can calculate the number of friends who was sharing them by dividing the total pounds of strawberries by 5.

So, if in the equation 20\div5=4,  5 represents the pounds of strawberries per person, then 4 represents the number of friends who were sharing the strawberries.

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The number of hours per day that Americans spend on social networking is approximately normally distributed. A random sample of
-Dominant- [34]

Answer:

B. (2.869, 3.411)

<em />

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>The number of hours per day that Americans spend on social networking is approximately normally distributed. A random sample of 20 Americans who use social networks had M = 3.14 hours and s = 0.58 hours. Find a 95% confidence interval for the actual mean number of hours that Americans spend on social networking. </em>

<em> </em>

<em>A. (2.860, 3.420) </em>

<em> B. (2.869, 3.411) </em>

<em>C. (2.886, 3.394) </em>

<em>D. Not appropriate</em>

We have to calculate a 95% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=3.14.

The sample size is N=20.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

s_M=\dfrac{s}{\sqrt{N}}=\dfrac{0.58}{\sqrt{20}}=\dfrac{0.58}{4.472}=0.13

The degrees of freedom for this sample size are:

df=n-1=20-1=19

The t-value for a 95% confidence interval and 19 degrees of freedom is t=2.093.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=2.093 \cdot 0.13=0.271

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 3.14-0.271=2.869\\\\UL=M+t \cdot s_M = 3.14+0.271=3.411

The 95% confidence interval for the mean is (2.869, 3.411).

3 0
3 years ago
Alejandro decided on purchasing a $160,000 home. At closing he brought a check for $4940. The closing costs were as follows:
enot [183]

Answer: 1

Step-by-step explanation: 545+2100+695= 3340

$4,940-$3,340= $1,600

1600/160,000 x 100 = 1

5 0
2 years ago
PLEASE HELP ME!!
Natali [406]

First put your numbers in order from least to greatest (These are negative numbers so that means that the smallest number is the one farthest away from zero)

-49, -43, -39, -18, -14, -12, -9

Mean is adding all the numbers together and dividing the sum by how many numbers there are in the data set

-49 + (-43) + (-39) + (-18) + (-14) + (-12) + (-9) = -184

There are seven numbers so divide -184 by 7:

-184 ÷ 7 ≈ 26.29

Median is the number in the middle. Take away the smallest number and the biggest number on each layer until you get to the middle

-49, -43, -39, -18, -14, -12, -9

       -43, -39, -18, -14, -12

              -39, -18, -14

                      -18 <-------------------Median

Mode is whatever number appears the most often in the data. In this case all the numbers appear only once so there is no mode

Range is subtracting the largest number by the smallest number

-9 - (-49) = 40

2. Data in order

13, 13, 13, 15, 21, 23, 25, 37

Outlier is the number that is a number that is rather far from the other number in the data

a. In this case the outlier is 37

b. 13 + 13 + 13 + 15 + 21 + 23 + 25 + 37 = 160

160 ÷ 8 = 20

c. 13 + 13 + 13 + 15 + 21 + 23 + 25  = 123

123 ÷ 7 = 17.57

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0
3 years ago
Read 2 more answers
Pls help find shaded area
Pavlova-9 [17]
<h3>Exact area = 12pi - 9*sqrt(3)  square inches</h3><h3>Approximate area = 22.1106545749577 square inches</h3>

==========================================================

Work Shown:

Assuming the chord is horizontal along with the diameter, then this means the two smallest minor arcs are both 30 degrees each. This leaves the northern most arc to be 180-30-30 = 120 degrees in measure

A = area of northern sector (you can think of it as a pizza slize)

A = (angle/360)*pi*r^2

A = (120/360)*pi*6^2

A = 12pi

B = area of triangle

B = (1/2)*side1*side2*sin(included angle)

B = (1/2)*6*6*sin(120)

B = 18*sqrt(3)/2

B = 9*sqrt(3)

C = area of shaded region

C = A - B

C = 12pi - 9*sqrt(3)  .... exact area

C = 22.1106545749577 ... use a calculator to get the approximate area

6 0
3 years ago
Solve for q. k = 4pq²
9966 [12]
K = 4pq^2
k/4p = q^2
0.5(k/p)^1/2 = q
7 0
3 years ago
Read 2 more answers
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