Answer:
D) -8
Step-by-step explanation:
If you add a positive and a negative, you end up subtracting. If your sum is lower than any of the numbers you are adding together, then there is a negative. In this case, your only negative number is -8, but if there were others, you could find this equation by doing negative six minus two (because the equation was originally addition, it would still be subtraction to check your work or find the answer in this case.)
Hopefully you find this useful :)
Answer: -8
Step-by-step explanation: lets take the unknown number as x,
so we have, 2 + x= -6
by using transposition method, x= -6-2( positive becomes
negative when transpositioning)
so, x= -8
Answer: (4,5,7) ,(7.2,-4),(-4,-7.2),(3,5.2)
Step-by-step explanation:
Answer:
it's C
Step-by-step explanation:
100, 150, 225, 337.5, ...
A. 50
B. 0.5
C. 1.5
D. 1.25
Answer:
Step-by-step explanation:
hello :
the common ratio is : 3375/225=225/150=150/100 = 1.5
Ist blank choices- A.) amount of virtual money B.) number of races completed C.) number of races won 2nd blank choices- A.) amount of virtual money B.) number of races completed C.) number of races won 3rd blank choices- A.) y=500x-5,000 B.) y=5,000x+500 C.) 5,000x-500 D.) y=500x+5,000
(x – 6)² + y² = 36
x² + y² = 12
x² + y² = 144
(x + 6)² + y² = 36
(x + 12)² + y² = 144
Answer:
Options 2 and 5.
Step-by-step explanation:
The standard form of a circle is
... (1)
where, (h,k) is center and r is radius.
We need to find the circle that has a diameter of 12 units, and its center lies on the x-axis.
So, radius of required circle must be 6 and center is in the form of (a,0).
The first equation is
.... (2)
On comparing (1) and (2) we get
Center of the circle is (12,0) and radius is . So, option 1 is incorrect.
Similarly,
For equation 2, center of the circle is (6,0) and radius is . So, option 2 is correct.
For equation 3, center of the circle is (0,0) and radius is . So, option 3 is incorrect.
For equation 4, center of the circle is (0,0) and radius is . So, option 4 is incorrect.
For equation 5, center of the circle is (-6,0) and radius is . So, option 5 is correct.
For equation 6, center of the circle is (-12,0) and radius is . So, option 6 is incorrect.
Therefore, the correct options are 2 and 5.
Answer:
1. 11 3/4
2. 29 7/16
3. 21 3/8
Step-by-step explanation:
The numbers against the longest marks are the integer portion of the measurement. Tapes that measure inches are marked this way, so we'll presume these are inch measurements. (There is nothing in your picture indicating the unit of measure.)
Each interval between two inch marks is divided into 16 equal parts. The marks get progressively shorter for 1/2, 1/4, 1/8, and 1/16 units. As you would expect, the mark halfway between the numbers is at 1/2 unit, or 1/2 inch more than the smaller of the two integers. The next shorter mark midway in the space between the 1/2 mark and the integers marks 1/4 unit. As you know 1/2 of 1/2 is 1/4. The second-shortest mark is at intervals of 1/8 either side of the 1/4 and 1/2 marks.
Equivalent fractions for numbers of 16ths also give you a clue as to how to read this.
integer inches . . . longest mark
1/16 = 1/16 . . . shortest mark
2/16 = 1/8 . . . second shortest mark
3/16 = 3/16
4/16 = 1/4 . . . third shortest/longest mark
5/16 = 5/16
6/16 = 3/8 . . .second shortest mark
7/16 = 7/16
8/16 = 1/2 . . . second longest mark
__
1. The middle mark between 11 1/2 and 12 is 11 3/4, so that is the measure indicated here.
__
2. The smallest mark is 1/16 less than 1/2, so is 7/16 more than 29. The measure shown is 29 7/16.
__
3. The second smallest mark is 2/16=1/8. This amount less than 21 1/2 (or more than 21 1/4) is 21 3/8.
_____
While it is common for inch rulers to be divided into 16ths, some specialty rulers have other divisions. Engineering rulers may be divided into 10ths, 20ths, 30ths, 40ths, 50ths, and 60ths (6 scales). Architectural rulers are divided in such a way as to make certain scale factors easy to read. It is not uncommon for the first inch or two to be divided into much smaller divisions, 100ths or 64ths or 32nds, for example.
Weekly Gross Revenue
($100s)
Television Advertising
($100s)
Newspaper Advertising
($100s)
Mobile
101.3
5
1.5
Shreveport
51.9
3
3
Jackson
74.8
4
1.5
Birmingham
126.2
4.3
4.3
Little Rock
137.8
3.6
4
Biloxi
101.4
3.5
2.3
New Orleans
237.8
5
8.4
Baton Rouge
219.6
6.9
5.8
(a) Use the data to develop an estimated regression with the amount of television advertising as the independent variable.
Let x represent the amount of television advertising.
If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)
= + x
Test for a significant relationship between television advertising and weekly gross revenue at the 0.05 level of significance. What is the interpretation of this relationship?
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
(b) How much of the variation in the sample values of weekly gross revenue does the model in part (a) explain?
If required, round your answer to two decimal places.
%
(c) Use the data to develop an estimated regression equation with both television advertising and newspaper advertising as the independent variables.
Let x1 represent the amount of television advertising.
Let x2 represent the amount of newspaper advertising.
If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)
= + x1 + x2
Is the overall regression statistically significant at the 0.05 level of significance? If so, then test whether each of the regression parameters β0, β1, and β2 is equal to zero at a 0.05 level of significance. What are the correct interpretations of the estimated regression parameters? Are these interpretations reasonable?
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
(d) How much of the variation in the sample values of weekly gross revenue does the model in part (c) explain?
If required, round your answer to two decimal places.
%
(e) Given the results in part (a) and part (c), what should your next step be? Explain.
The input in the box below will not be graded, but may be reviewed and considered by your instructor.
(f) What are the managerial implications of these results?
The input in the box below will not be graded, but may be reviewed and considered by your instructor.