Answer: The researcher should use a t-distribution because they do not know the true standard deviation of daily sugar intake in Durham county
Step-by-step explanation:
Given data:
No of county residents contacted = 35
Sample average = 37.4grams
Standard deviation = 4.2.
Confidence interval.
From the given data above it is obvious that the research doesn’t know the true data for standard deviation of the daily intake of sugar in Durham. And as such the best distribution method that can be employed by the researcher to solve this problem would be the T-distribution.
8 + 2r = −10 what is r?
Answer:
r = -9
Step-by-step explanation:
Subtract 8 from both sides to get 2r = -18. Divide by 2 on both sides to get r = -9.
Answer:
r=-9
Step-by-step explanation:
Step 1:- Simplify both sides of the equation.
2r+8 = -10
Step 2:- For isolating the variable, subtract 8 from both sides.
2r+8-8 = -10-8
2r = -18
Step 3:- For isolating the variable, divide by 2 from both sides.
2r/2 =-18/2
r= -9
Hope this helps :)
Find the value of x.
T
OX= 2
O x= 3
O x= 33
O x = 52
Answer:
x=3
Step-by-step explanation:
Angle TRS would be 180-45x as the angle lies on a straight line and we know angles on a straight line add up to 180 degrees
Then I would add the three angles in the triangle and equate it to 180 degrees as angles in any triangle add up to 180 degrees
therefore:
(180-45x)+25x+(57+x)=180
180-45x+26x+57=180
237-19x= 180
237-180=19x
57=19x
57/19=x
3=x
x is correct as when we substitute it in the angles in the triangle, the interior angles for the triangle does add up to 180
Tomas works as an underwater photographer. He starts at a position that is 17 feet below sea level. He rises 9 feet, then descends 15 feet to take a photo of a coral reef. Enter an expression to find his position relative to sea level when he took the photo and then evaluate the expression.
Answer:
(-17 + 9) - 15
Step-by-step explanation:
I think of below sa level as negative numbers, so 17 feet below sea level is -17. Then when he rises 9 feet that would be - 17 + 9. When he decends 15 feet to take another picture thats - 15. Then when you thing of pemdas addition goes first, so i just put parentases around -17 + 9 to get the expression (-17 + 9) - 15
A sho sales associate earned $300 inAugust. In September she earned 8% more than she did in August. How much did she earn in September?
Group of answer choices
$315
$308
$380
$324
HELP ME PLEASE!!!!!!!!!!
Answer:
2
Step-by-step explanation:
rise/run
4/2
2
Which of the following statement is true? A=(2x+1), B=(x+15) C=x
is there any option choices to go along with the question?
Brandon says 6 - (-4) is 10. Jay says 6 - (-4) is 2. Who is correct? Explain.
Answer:
Brandon is correct
Step-by-step explanation:
two negatives equal a positive
Answer:
hi
Step-by-step explanation:
A conservative estimate of the number of stars in the universe is 6x10^22. The average human can see about 3,000 stars at night with his naked eye.About how many more times more stars are there in the universe compared to the stars human can actually see?
Answer:
2 × 10^19 times
Step-by-step explanation:
Number of stars in universe = 6x10^22
Number of stars eye can see = 3000
About how many more times more stars are there in the universe compared to the stars human can actually see?
Number of stars in universe / number of stars eye can see
= 6x10^22 / 3000
= 6 × 10^22 / 3 × 10^3
= 2 × 10^(22 - 3)
= 2 × 10^19 times
Number of stars in universe is 2 × 10^19 times more than that which the eyes can see
There are 4 milk chocolates to every 2 dark in a box of chocolates. There are 34 dark chocolates in the box. How many milk chocolates are in the box?
Write the following in EXPONENT FORM: 2 x 2 x 2 x 3x3
Answer:
2^3 x 3^2 (the ^ means to the ___ power)
Step-by-step explanation:
2 x 2 x 2 -----> 2 to the third power, 2^3
3 x 3 -------> 3 to the second power, 3^2
Hope this helps! Good luck :)
-3 < 5c + 7 < 22 solve the inequality
Answer: -2<x<3
Step-by-step explanation:
subtract seven on all sides
-10<5c<15
divide by 5 on all sides
-2<c<3
Which symbol correctly fills in the blank? 372.5. <37.25
Answer:
>
Step-by-step explanation:
flip the symbol because 372 is bigger than 37
Describe the Graph of y= x-2
Answer:
the picture above is the graph :)
A park guide plans the swan boat rides for 38 people. Each boat can carry 6 people at a time.
What is the best way to interpret the remainder in this situation so that everyone gets a ride? Complete the statement.
The best way would be to ? the quotient by .
Answer:
38/6
Step-by-step explanation:
So, the best way to interpret the reminder of this problem is by doing 38/6 then, the left over people is the reminder.
Answer: So, the best way to interpret the reminder of this problem is by doing 38/6 then, the left over people is the reminder.
Step-by-step explanation: So, the best way to interpret the reminder of this problem is by doing 38/6 then, the left over people is the reminder.
When a number is increased by 39, the result
is 47. What equation fits this statement?
Answer:
×+39=47
Step-by-step explanation:
is what I think because reult is 47so =47 and 39 is positive so x +39
You had a lot of spare time this summer because of quarantine, so you and four family members took a 5-day white-water rafting and hiking trip. During your 5-day trip, 2 days were spent rafting. If the rafting trip covered a distance of 60 miles and you spent 8 hours rafting each day, how many miles did you raft each hour?
Answer:
3.75 miles per hour
Step-by-step explanation:
Given that:
Number of days spent rafting = 2 days total distance covered during rafting = 60 miles
Time spent rafting per day = 8 hours
Number of miles raft per hour:
Total number of raft hours over the 2 days = (8 * 2) = 16 hours
Total raft distance over the 2 days = 60 miles
Raft miles per hour :
Total raft distance / total number of raft hours
60 miles / 16 hours
= 3.75 miles per hour
1) You purchase 5 pounds of candy for Halloween for $8! How many pounds of caner would you have purchased for $20?
Answer:
12.5
Step-by-step explanation:
Answer:
It should be 32 pounds.
Step-by-step explanation:
I divided 8 by 5 and got 1.6 and then multiplied that by 20 and got 32.
A carpenter bought bolts to finish a project. In all, the bolts weighed 2 pounds. There are 16 ounces in 1 pound. If each bolt weighed 1/12 ounce, how many bolts did the carpenter buy
Answer:
384boltsStep-by-step explanation:
Given that there are 16 ounces in 1 pound
the carpenter bought 2 pounds
hence he has 32 ounces altogether
also each bolt weighed 1/12 ounce
Hence in 32 ounces there are
32/1/12
multiply 32 by the inverse of the denominator we have
=32*12/1
=384bolts
Please help asap. Ty
The following is an incomplete paragraph proving that the opposite sides of parallelogram ABCD are congruent:
Parallelogram ABCD is shown where segment AB is parallel to segment DC and segment BC is parallel to segment AD.
According to the given information, segment AB is parallel to segment DC and segment BC is parallel to segment AD. Construct diagonal A C with a straightedge. _____________. Angles BAC and DCA are congruent by the Alternate Interior Angles Theorem. Angles BCA and DAC are congruent by the same theorem. Triangles BCA and DAC are congruent according to the Angle-Side-Angle (ASA) Theorem. By CPCTC, opposite sides AB and CD, as well as sides BC and DA, are congruent.
Which sentence accurately completes the proof? (5 points)
Angles BAC and DCA are congruent by the Same-Side Interior Angles Theorem.
Diagonal BD is congruent to itself by the Reflexive Property of Equality
Diagonal AC is congruent to itself by the Reflexive Property of Equality.
Angles ABC and CDA are congruent according to a property of parallelograms (opposite angles congruent).
Answer:
The third option is the answer.
Step-by-step explanation:
I just took the test and got it right.
Answer:
Diagonal AC is congruent to itself by the Reflexive Property of Equality.
Step-by-step explanation:
I'm taking the test
On Thursday a local hamburger shop sold a combined total of 444 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold
Answer:
148 hamburgers sold
296 cheeseburgers sold
Step-by-step explanation:
x = number of hamburgers sold
2x = number of cheeseburgers sold
444 = total burgers sold
hamburgers + cheeseburgers = total burgers sold
x + 2x = 444
3x = 444
3x/3 = 444/3
x = 148
Check:
148 + 2(148) = 444
148 + 296 = 444
444 = 444
There are 28 female performers in a dance recital. The ratio of men to women is 3:4. How many men are in
the dance recital?
At an Italian restaurant, you order a salad for $2.50 and spaghetti for $8.25. Sales tax is 7.5%. What is the total of your bill including sales tax?
Answer: $11.56
Step-by-step explanation:
Which of the following are valid names for the given triangle? Check all that apply.
Answer:
a, b, e,f
Step-by-step explanation:
i dont have one
Which one?
A. B. C. or D?
Answer:
A) -9
Step-by-step explanation:
You can take one zero off of each number. That leaves you with 9/-1. 9/1 is 9, and then you add a negative sign to the 9.
Suppose line g is the line with equation y=x. Given A(8.-4), B(6,3), and C(-1.-6), what are the coordinates of the vertices of AA'B'C' for the reflection?
R
Al
(Type an ordered pain.)
Enter your answer in the answer box and then click Check Answer
Answer:
A'(-4, 8), B'(3, 6), C'(-6, -1)
Step-by-step explanation:
Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, rotation, dilation and translation.
If a point X(x, y) is reflected about the y = x line, the new location is X'(y, x)
Triangle ABC has vertices at A(8.-4), B(6,3), and C(-1.-6), if it is reflected about the y = x line, the new location is A'(-4, 8), B'(3, 6), C'(-6, -1)
Write a linear equation in slope intercept from that is perpendicular to x−3y=3 and passes through the point (5, −9).
Answer:
[tex]y=-3x+6[/tex]
Step-by-step explanation:
First, let’s determine the slope of the original equation.
We have [tex]x-3y=3[/tex]
Subtract x from both sides and then divide both sides by -3. So:
[tex]-3y=-x+3\\y=\frac{1}{3}x-1[/tex]
Therefore, the slope of our original line is 1/3.
Remember that perpendicular lines have slopes that are negative reciprocals of each other.
Therefore, the slope of our new perpendicular line is the negative reciprocal of 1/3.
Thus, the slope of our new line will be -3. We flip the fraction and add a negative.
So, the slope of our new line is -3. We also know that it passes through the point (5, -9).
Now, we can use the point-slope form:
[tex]y-y_1=m(x-x_1)[/tex]
Where m is the slope and (x₁, y₁) is a point.
So, substitute -3 for m and (5, -9) for (x₁, y₁). This yields:
[tex]y-(-9)=-3(x-5)[/tex]
We want our line in slope-intercept form. So, distribute the right:
[tex]y+9=-3x+15[/tex]
Subtract 9 from both sides. Therefore, our equation is:
[tex]y=-3x+6[/tex]
Answer:
5
Step-by-step explanation:
Find the zeros of the function.
Enter the solutions from least to greatest.
f(x) = 8x2 – 800
Answer:
-10, 10
Step-by-step explanation:
To do that, we can set up an equation:
[tex]8x^2-800=0[/tex]
We can divide both sides by 8 to make it easier to solve:
[tex]x^2-100=0[/tex]
Now, isolate the x and take the square root of both sides:
[tex]x^2=100\\x=\pm10[/tex]
Therefore, the 2 zeroes of f(x) are -10 and 10.
1)
SURFACE AREA
13 ft ▪️ square
What would be the surface area of a 13ft square
SURFACE AREA:
Answer: multiply by the number of faces
Step-by-step explanation:
If it is a square then you would do 13 x 13 = 169, that is the amount for one face. Then, multiply 169 times how many faces there are to find the surface area.
PLSSSSSSSSSSSSSSSS I NEED HELP
Problem Solving: Use
Reasoning
1. The delivery person stopped on the 14th floor to talk to a friend. Before stopping, he had just made a delivery 4 floors above. Before that he made a delivery 6 floors below. Before that he had made a delivery 9 floors above. Before that he had made a delivery 15 floors below. On what floor did he make his first delivery?
2. Geometry The volume of a rectangular prism is 208 cm3. If the area of one end is 16 cm2, what is the length of the prism?
3. On one day, a store sold 16 boxes of rice, restocked the shelf with 22 boxes, sold 27 boxes, restocked with 30 boxes, and sold 15 boxes. There are now 21 boxes of rice on the shelf. How many boxes were on the shelf at the start of the day?
4. At the end of the day, Brooke had $138.75 in her checking account. She had made a deposit of $115.07 and written checks totaling $176.94. How much did she have in her checking account at the beginning of the day?
A –$76.88
B $76.88
C $200.62
D $430.76
5. Writing to Explain The football team gained 7 yards, gained 4 yards, lost 5 yards, gained 21 yards, lost 2 yards, and gained 4 yards to their 43 yard line. Explain how you solved this problem. Then find the yard line where the team began.
Practice 7-6
Answer:
1. 6th Floor
2. 13 cm
3. 15 boxes
4. $76.88
5. 14
Step-by-step explanation:
1. 14 + 4 = 18. 18 - 6 = 12. 12 + 9 = 21. 21 - 15 = 6
2. 208 ÷ 16 = 13
3. 21 - 15 = 6. 6 + 30 = 36. 36 - 27 = 9. 9 + 22 = 31. 31 - 16 = 15
4. 138.75 + 115.07 = 253.82. 253.82 - 176.94 = 76.88
5. ? + 7 + 4 - 5 + 21 - 2 + 4 = 43. First you need to combine all of it:
? + 29 = 43. 43 - 29 = ?
43 - 29 = 14
? = 14
