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bezimeni [28]
3 years ago
14

Mrs. Jacobson wants to order toy instruments to give as prizes to her music students. The table shows the prices for various ord

er sizes.
25 Items 50 Items 80 Items
Whistles: [21.25] [36.00] [60.00]
Kazoos: [10.00] [18.50] [27.20]
a. What is the difference between the highest until price for whistles and the lowest
unit price for whistles?
b. What is the highest unit price per kazoo?
c. If Mrs. Jacobsen wants to buy the item with the lowest unit price, what item should
she order and how many of that item should she order?
Mathematics
2 answers:
Leona [35]3 years ago
7 0
First let as solve all unit pirce
whistles 21.25 / 25 = $ 0.85 per unit
36 / 50 = $ 0.72 per unit
60 / 80 = $ 0.75 per unit
kazoos
10 / 25 = $ 0.4 per unit
18.50 / 50 = $ 0.37 per unit
27.20 / 80 = $ 0.34 per unit
a.) $ 0.85 - $ 0.72 = $ 0.13
b.) 10 / 25 = $ 0.4 per unit
c.) he must order 80 kazoos she should
order
shtirl [24]3 years ago
5 0

Answer:

first let as solve all unit price

whistles 21.25 / 25 = $ 0.85 per unit

36 / 50 = $ 0.72 per unit

60 / 80 = $ 0.75 per unit

kazoos

10 / 25 = $ 0.4 per unit

18.50 / 50 = $ 0.37 per unit

27.20 / 80 = $ 0.34 per unit

a.) $ 0.85 - $ 0.72 = $ 0.13

b.) 10 / 25 = $ 0.4 per unit

c.) he must order 80 kazoos she should order

Step-by-step explanation:

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In a recent survey of 1002 people, 701 said that they voted in a recent presidential election. Voting records show that 61% of e
steposvetlana [31]

Answer:

The 95% confidence interval estimate of the proportion of people who say that they voted

(0.67122 , 0.72798)

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

In a recent survey of 1002 people, 701 said that they voted in a recent presidential election.

Sample proportion

                          p = \frac{x}{n} = \frac{701}{1002} = 0.6996  

<u><em>Step(ii)</em></u>

The 95% confidence interval estimate of the proportion of people who say that they voted

(p^{-} - Z_{0.05} \sqrt{\frac{p(1-p)}{n} } , p^{-} + Z_{0.05} \sqrt{\frac{p(1-p)}{n} } )

(0.6996 - 1.96\sqrt{\frac{0.6996(1-0.6996)}{1002} } , 0.6996 + 1.96 \sqrt{\frac{0.6996(1-0.6996)}{1002} } )

(0.6996 - 1.96 X 0.01448 , 0.6996 + 1.96 X 0.01448)

(0.6996 - 0.02838 , 0.6996 + 0.02838)

(0.67122 , 0.72798)

<u><em>Final answer</em></u>:-

The 95% confidence interval estimate of the proportion of people who say that they voted

(0.67122 , 0.72798)

7 0
3 years ago
Haley pays a monthly fee of $20 for her cell phone and then pays 5 cents per minute used. The total cost of Haley’s monthly cell
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The domain of the function C(m) = 0.05m + 20 is (0, ∞) and the range of the function C(m) = 0.05m + 20 is (20, ∞).

<h3>What is the linear system?</h3>

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

Haley pays a monthly fee of $20 for her cell phone and then pays 5 cents per minute used. The total cost of Haley’s monthly cell phone bill can be expressed by the function

\rm C(m) = 0.05\ m + 20

The domain of the function is from zero to infinity because time can never be negative.

Then the range of the function will be

At m = 0, the value of C(m) will be

C(m) = 0.05(0) + 20

C(m) = 20

At m = ∞, the value of C(m) will be

C(m) = 0.05(∞) + 20

C(m) = ∞

Thus, the domain of the function is (0, ∞) and the range of the function is (20, ∞).

More about the linear system link is given below.

brainly.com/question/20379472

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Step-by-step explanation:

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i suck at math

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