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olganol [36]
2 years ago
10

13x - 4 < 12x - 1?................................................

Mathematics
1 answer:
Alenkasestr [34]2 years ago
7 0
13x-12x < -1+4
x < 3
so all values less than 3 are x
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The length between the bases on a Major League Baseball diamond is 90 feet. Allyson wants to make a scale drawing of a baseball
Vinil7 [7]

Answer:

\text{The scale is }\frac{1}{432}

Step-by-step explanation:

Length between the bases on a major league diamond = 90 feet

1 feet = 12 inches

90 feet = 90 × 12

             = 1080 inches

Length between the bases on a major league baseball diamond on scale drawing = 2.5 inches

\text{Scale factor = }\frac{\text{Actual length}}{\text{Scale length}}\\\\\text{Scale factor = }\frac{1080}{2.5}=432

\text{Hence, the scale is }\frac{1}{432}

4 0
3 years ago
Iif jessica ate 7 apples and liz ate 3 .how many fruits she hade left
Viktor [21]

not enogh information how many did they start with... take the number of fruits they started with(lets just say the number of frits is :z) then take 7+3= 10

so youll need to

Z-10

Z= the number of fruits that was started with

hop this helps!

7 0
2 years ago
In a study on the time that
krok68 [10]

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

-----------------------------

To solve this question, we need to find the confidence interval for the amount of time it takes the students to get the degree.

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,which is the sample size subtracted by 1. So

df = 80 - 1 = 79

-----------------------------

95% confidence interval

Standard level of confidence, we have to find a value of T, which is found looking at the t table, with 79 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 1.9905.

-----------------------------

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.9905\frac{2.2}{\sqrt{80}} = 0.5

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 4.8 - 0.3 = 4.3 years.

The upper end of the interval is the sample mean added to M. So it is 4.8 + 0.3 = 5.3 years.

-----------------------------

The 95% confidence interval of the population mean, in years, is (4.3, 5.3). 4 years is not part of the confidence interval, which means that it contradicts the fact that 39% of students get their college degree in four years.

A similar question is given at brainly.com/question/24278748

6 0
2 years ago
3/4 = x/20 i need the answer i beg
Nady [450]

Answer:

15/20

Step-by-step explanation:

4 x 5 = 20

so

3 x 5 = 15

so (sorry for the repetition)

= 15/20

8 0
2 years ago
HELP PLEASEEEE!!!!!!!!
nikdorinn [45]
Chin is correct because 5 x $.65 is $3.25., and he multiplied by US/GB

Nadene is incorrect because she took GB/US x 5
3 0
2 years ago
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