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Natalija [7]
3 years ago
5

You and your family attend your brother’s championship baseball game. Between innings you decide to go to the snack stand. You g

o to the snack stand with $15 and find that sodas are $2.50 and that popcorn is $3.75. Write an inequality that models the number of sodas you can buy if you get a bag of popcorn too. What is the maximum number of sodas you can buy in this situation?
Mathematics
2 answers:
noname [10]3 years ago
8 0

Answer:

i believe it would be 15=3.75+2.50   <3

melamori03 [73]3 years ago
3 0

Answer:

6 sodas

Step-by-step explanation:

1 soda= $15

= 15/2.50

= 6

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I need help my ASAP:):);)
Paraphin [41]

Answer:

Additive Identity Property

Step-by-step explanation:

Additive Identity Property means that when you add 0 the answer will always equal the other number.

Other examples of this property:

3+0=3

0+7=7

9+0=9

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Please help meee!!! 5 stars to the best answer.
vovikov84 [41]

Answer:

3 cm

Step-by-step explanation:

First, find the volume of the cone.

V = \frac{1}{3}\pir²h

V = \frac{1}{3}(3.14)(9)(12)

V = 113.04

This means the sphere is also 113.04

Use the formula V = \frac{4}{3}\pir³

113.04 = \frac{4}{3}(3.14)r³

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Choose all the ones
ElenaW [278]

Answer:

A, C, D

Step-by-step explanation:

A. $5.60 per class

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B. $6.50 per class

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The measure of angle 1 is 27 degrees.<br> Complement:<br> Supplement:
Paladinen [302]

Answer:

Complement: 63°

Supplement: 153°

Step-by-step explanation:

NOTE: Supplementary angles are two angles that have a sum of 180°. Complementary angles are two angles that have a sum of 90°.

<u><em>Please mark as brainliest if answer is right </em></u>

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3 0
3 years ago
An SRS of 350 high school seniors gained an average of x¯=21 points in their second attempt at the SAT Mathematics exam. Assume
Lynna [10]

Answer:

a) 21-2.58\frac{52}{\sqrt{350}}=13.83  

21+2.58\frac{52}{\sqrt{350}}=28.17  

So on this case the 99% confidence interval would be given by (13.83;28.17)  

b) ME=2.58\frac{52}{\sqrt{350}}=7.17

c) ME=2.58\frac{52}{\sqrt{100}}=13.42

d) D. Decreasing the sample size increases the margin of error, provided the confidence level and population standard deviation remain the same.

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Part a

\bar X=21 represent the sample mean  

\mu population mean (variable of interest)  

\sigma=52 represent the population standard deviation  

n=350 represent the sample size  

99% confidence interval  

The confidence interval for the mean is given by the following formula:  

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)  

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that z_{\alpha/2}=2.58  

Now we have everything in order to replace into formula (1):  

21-2.58\frac{52}{\sqrt{350}}=13.83  

21+2.58\frac{52}{\sqrt{350}}=28.17  

So on this case the 99% confidence interval would be given by (13.83;28.17)  

Part b

The margin of error is given by:

ME=2.58\frac{52}{\sqrt{350}}=7.17

Part c

The margin of error is given by:

ME=2.58\frac{52}{\sqrt{100}}=13.42

Part d

As we can see when we reduce the sample size we increase the margin of error so the best option for this case is:

D. Decreasing the sample size increases the margin of error, provided the confidence level and population standard deviation remain the same.

6 0
3 years ago
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