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attashe74 [19]
2 years ago
15

Larry wants to purchase birthday gifts for his twin sisters. One sister likes daises which costs $2.00 per stem and the other li

kes tulips which costs $3.00 per stem. Which inequality could he use to determine how many of each flower he could buy if he only has $35.00 to spend? Let x represent the number of daisies and y the number of tulips. Group of answer choices
Mathematics
1 answer:
Llana [10]2 years ago
4 0

Answer: 2x + 3y = 35

Step-by-step explanation:

Let x = number of daisies

Let y = number of tulips

Since one sister likes daises which costs $2.00 per stem and the other likes tulips which costs $3.00 per stem, the inequality that could be use to determine how many of each flower he could buy if he only has $35.00 to spend will be:

2x + 3y = 35

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A student records the repair cost for 22 randomly selected dryers. A sample mean of $98.78 and standard deviation of $15.49 are
Gelneren [198K]

Answer:

The critical value that should be used is T = 2.0796.

The 95% confidence interval for the mean repair cost for the dryers is between $91.912 and $105.648.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 22 - 1 = 21

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 21 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0796, which is the critical value that should be used.

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.0796\frac{15.49}{\sqrt{22}} = 6.868

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 98.78 - 6.868 = $91.912

The upper end of the interval is the sample mean added to M. So it is 98.78 + 6.868 = $105.648

The 95% confidence interval for the mean repair cost for the dryers is between $91.912 and $105.648.

8 0
3 years ago
For which real numbers x and y is it true that x + y = x+y?
Alchen [17]
By the general application of cumulative property of addition :

x + y = y + x

For sure
6 0
3 years ago
<img src="https://tex.z-dn.net/?f=18%20310%20%E2%88%92%209%20910%20%3D" id="TexFormula1" title="18 310 &minus; 9 910 =" alt="18
Marta_Voda [28]

Answer:

8400

Step-by-step explanation:

18310 - 9910

= 8400

Hope it helps you!!

#IndianMurga(. ❛ ᴗ ❛.)

3 0
3 years ago
ROSSEL
malfutka [58]

Answer:

√41

Step-by-step explanation:

4^2+5^2

16+25=41

√41

8 0
3 years ago
Read 2 more answers
Please Help Me Quick with this math problem!!!!!!!!!!!!!!
weeeeeb [17]

Answer:

x= -5    y= -1

Step-by-step explanation:

3 0
3 years ago
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