9514 1404 393
Answer:
Step-by-step explanation:
Given:
7.14
Find:
Solution:
a) The whole number is the integer portion, the part of the number to the left of the decimal point: 7.
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b) The right-most place value is hundredths.
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c) seven and fourteen hundredths
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d) There are several versions of "expanded form." Choose the one applicable to your curriculum.
7.14 = 7 +0.1 + 0.04
7.14 = 7×1 + 1×.1 + 4×.01
7.14 = 7×10⁰ +1×10⁻¹ +4×10⁻²
The equation of line passing through points (-4, 1) and (2, 3) will be
3y = x + 7
An inequality in mathematics compares two values or expressions, showing if one is less than, greater than, or simply not equal to another value. The general equation of a straight line inequality is -
[y] < [m]x + [c]
[y] > [m]x + [c]
[y] ≥ [m]x + [c]
[y] ≤ [m]x + [c]
where -
[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].
[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.
The equation of a straight lineinequality can be also written as -
Ax + By + C > 0
By > - Ax - C
y > (- A/B)x - (C/A)
Given is inequality's solution graphed [Refer to graph attached].
The inequality whose solution is graphed is -
5x + 3 > 3
On solving -
5x + 3 > 3
5x + 3 - 3 > 3 - 3
5x > 0
x > 0
Therefore, the inequality whose solution is graphed is
5x + 3 > 3
(Refer the image attached, for reference)
To solve more questions on inequalities, visit the link below -
#SPJ5
Answer:
x = 5°
Step-by-step explanation:
We know that in a triangle, the measure of an exterior angle is equal to the sum of its two remote interior angles, therefore:
7x + 4 + 61 = 20x
7x + 65 = 20x
13x = 65
x = 5°
Answer:
Solution given:
61°+(7x+4)°=20x [ exterior angle is equal to the sum of two opposite interior angle]
65+7x=20x
65=20x-7x
13x=65°
x==5°
value of x=5°
write the sentence as an equal
Answer:
A=t+258
Step-by-step explanation:
Answer:
The required standard form is 38,200,000.
Step-by-step explanation:
Consider the provided number.
The calculator shows the number 3.82e+7
E notation is the same as the scientific notation the only difference is the letter e is substituted for "× 10^".
Here, the e+7 means
Thus the provided number can be written as:
Now expand it, just move the decimal point over 7 place to right as shown:
Hence, the required standard form is 38,200,000.
One-sample T
Test of mu=210 vs.>210
N Mean St. Dev SE Mean 95% lower bound T p
40 241.40 57.59 9.11 226.06 3.45 0.001
A H0 u>210 sec. H1 u < 210sec
B H0 u=210 sec. H1 u < 210sec
C H0 u<210 sec. H1 u> 210sec
D H0 u=210 sec. H1 u> 210sec
Identify the test statistic:
T =
Identify the P-Value
P-value=
Stat the final conclusion that addresses the original claim. Choose from below:
A. Reject H0. There is insufficient evidence to support the claim that the sample is from a population of songs with a mean length greater than 210 sec.
B. Fail to reject H0. There is insufficient evidence to support the claim that the sample is from a population of songs with a mean length great thatn 210 sec.
C. Reject H0. There is sufficient evidence to spport the claim that the sample is from a population of songs with a mean length greater than 210 sec.
D. Fail to reject H0. There is sufficient evidence to support the claim tha tthe sample is from a population of songs with a mean lenght greater than 210 sec.
What do the results suggest about the advice given in the manual?
A. The results do not suggest that the advice of writing a song that must be no longer than 210 seconds is not sound advice.
B The results suggest that the advice of writing a song that must be no longer than 210 seconds is not sound advice
C. The results suggest that 241.4 seconds is the best song lenght.
D. The results are inconclusive because the average length of a hit song is constantly changing.
Answer:
D H0 u=210 sec. H1 u> 210sec
C. Reject H0. There is sufficient evidence to spport the claim that the sample is from a population of songs with a mean length greater than 210 sec.
Step-by-step explanation:
Data given and notation
represent the sample mean
represent the sample standard deviation for the sample
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
t would represent the statistic (variable of interest)
represent the p value for the test (variable of interest)
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to check if the mean is greater than 210 seconds, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
If we analyze the size for the sample is > 30 but we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:
(1)
t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".
Calculate the statistic
We can replace in formula (1) the info given like this:
P-value
The first step is calculate the degrees of freedom, on this case:
Since is a one side test the p value would be:
Conclusion
If we compare the p value and the significance level given we see that so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the mean is significantly higher than 210 seconds.
C. Reject H0. There is sufficient evidence to spport the claim that the sample is from a population of songs with a mean length greater than 210 sec.
Answer:
0.458 Pages per minute
Step-by-step explanation:
1. Find your two numbers
2. Divide the 5.5 pages by 12 minutes
3.You will get 0.458
4. You can round it to 0.5 or 0.46