What's three digit number closest to 300 using 6, 2, 7, 3
Answer:
326
Step-by-step explanation:
Its hard to explain but you get the idea lol
You've developed a protein drink that you think cures arthritis. to test it, you find 200 volunteers (100 men and 100 women) and test them to measure the amount of discomfort they feel from their arthritis. then you give the treatment to half the subjects and a placebo to the others. you then test them all at regular intervals and measure their improvement. you find that the subjects who received the treatment show marked improvement. the people performing the tests are not told that they're studying an arthritis medication. you excitedly report your findings in an infomercial that is seen by millions of people, and sales skyrocket. but were the test results truly useful for determining the effectiveness of the treatment? why or why not? a. no, there was no control. b. yes, it's a blind-study. c. yes, it's a valid before-and-after design. d. can't be determined without knowing how much improvement was measured. e. no, there was no replication.
Answer:
I would say C
Step-by-step explanation:
In this experiment the subjects do not know whether they are being given the real treatment or a placebo. Also the testers do not know that treatment for arthritis has been given. The subjects being given the treatment "show marked improvement" according to the tests. Therefore this is a valid double blind experiment, making C the correct choice.
A teacher estimates there are about 600 students at their school. If there are actually 625 students, then what is the percent error of this estimate?
Answer:
4%
Step-by-step explanation:
(|600-625|)/625 x 100
=4%
Answer:
The percent error for this estimate was 4%.
Step-by-step explanation:
Teacher's estimated students = 600
Actual students = 625
625-600 = 25 students are more than the teacher's estimate.
In other words, the measurement error = 25 students
Now the percent error can be calculated by dividing 25 (measuring error) by the actual students.
Percent error = 25/625 = 0.04 which is 4%
Therefore, the percent error for this estimate was 4%.
Karl is making a pot of chili. The recipe calls for 3/8 cup of chili powder, but Karl only wants to use half as much so it won’t be so spicy. How much chili powder should Karl use?
Answer:
KArl should use 3/16 cups of chili powder
Step-by-step explanation:
Given that:
Recipe's requirement : 3/8 cups
Karl wants to use half : 1/2
The given question involves fractions. When the number of cups has to be divided into half, it will be multiplied with 1/2.
So,
Multiplying the chili powder requirement of the recipe to 1/2
[tex]=\frac{3}{8} * \frac{1}{2}\\= \frac{3}{16}[/tex]
Hence,
KArl should use 3/16 cups of chili powder
Answer:
3/16 i just answer it on my quiz and it said i got it correct
Step-by-step explanation:
expand and simply 3(2x+5) - 2(x-4)
Answer:
4x+7
Step-by-step explanation:
6x+15 - 2x-8
Combine like terms
6x-2x=4x
15-8 = 7
4x+7
How many square feet of outdoor carpet will we need for this hole?
Answer:
36 square feet
Step by step explanation:
hope this helps!
Are the lines X - 2Y= 4 and Y = 2X -2 parallel perpendicular or neither?
9514 1404 393
Answer:
neither
Step-by-step explanation:
Solving the first equation for y gives you ...
y = 1/2x -2
The slope of each line is the coefficient of x, 1/2 or 2. The slopes of 1/2 and 2 are not equal and are not opposite reciprocals. The lines are neither parallel nor perpendicular.
help me I'm desperate I'm begging you please I'm about to break down help
After constructing a confidence interval estimate for a population mean, you believe that the is useless because it is too In order to correct this problem, you need to: interval population standard deviation. wide. A. Increase the B. Increase the sample size. C. Increase the level of conf D. Increase the sample mean.
D its all about the process of elimination you just got to un connect the
4.
It takes a lady 3 days to wash the windows
inside and out. Her husband can do the job
in 4 days. How fast can they do it together?
Abigail (Abby) Boxer, age 45, is a single mother working as a civilian accountant for the U.S. Army. Her Social Security number is 676-73-3311 and she lives at 3456 Alamo Way, San Antonio, TX 78249. Helen, Abby's 18-year-old daughter (Social Security number 676-73-3312), is a dependent child living with her mother, and she does not qualify for the child tax credit due to her age but does qualify for the other dependent credit of $500. Abby received a Form W-2 from the U.S. Department of Defense.
Answer:
Step-by-step explanation:
WHats the question here bud
Find the next three terms of each arithmetic sequence.
4. 9, 13, 17, 21, 25, ...
6. 29, 35, 41, 47, ...
5. 4, 0, -4, -8, -12,...
Answer:
(4) 29, 33, 37
(6) 53, 59, 65
(5) -16, -20, -24
Step-by-step explanation:
An ant starts walking along a parabola, y(x)=x^2 starting from the point where x=3 He walks until a point where x=3+a where a is a positive number. What is the y-coordinate of the point that he is at now?
plz no bs answers
Answer:
the y co-ordinate > 9
Step-by-step explanation:
I just graphed y = x^2 found the point where the x - axis was 3, found that the y co-ordinate was 9 and if you were to add any positive number the y co-ordinate would only get larger!
Hope this helps!
Which number is greated 0.3 or -0.7? Explain
Answer:
Step-by-step explanation:
Which number is greater 0.3 or -0.7?
0.3 is greater because it is a positive number. The other one is a negative.
Answer:
0.3 is greater than -0.7
Step-by-step explanation:
If you look at the number line, -0.7 is on the left side of 0, which means is less than 0.
so 0.3 > -0.7
for negative number the bigger is the number, the less is it’s value.
Diego measured the length of a pen to be 22 cm. The actual length of the pen is 23 cm.
Answer:
ok but whats the question
Step-by-step explanation:
Answer: Whats the question lol?
Step-by-step explanation:
solve this expression (4-1/2)*0.6+1.7 show ur work I will give bràinliest
Answer:
3.8
Step-by-step explanation:
Here's how I solved it.
(4-1/2) = 3.5
3.5(0.6) = 2.1
2.1 + 1.7 = 3.8
Lets go through this together!
(4−12)(0.6)+1.7
=72(0.6)+1.7
=2.1+1.7
=3.8
Therefore the answer is 3.8!
If I'm wrong I Apologize May I Have brainliest? <3
A pack of cinnamon scented pencils cost $9.00. What is the sales tax rate if the total cost for the pencils with tax is $9.54? _______________% NEED URGENT HELP!!!
well, the pencils are 9 bucks, but they're selling for 9.63, meaning the tax is 0.63 or 63 cents.
now, if we take 9 to be the 100%, what is 0.63 off of it in percentage?
If angle M is represented by x + 16 and angle G is represented by
X – 40, and angles M and G are complementary, what is the
measure of angle M?
Answer:
the measure of angle M is 73 degrees
Step-by-step explanation:
the sum of complementary angles is 90 degrees. so set up the equation as:
x+16+x-40=90
combine like terms and you get:
2x-24=90
add 24 on both sides and you get:
2x=114
divide by 2 on both sides to isolate x and you get:
x=57
since the equation for angle M is x+16, you substitute 57 for x and you get:
M=57+16
M=73
Juan sells hats and t-shirts for students to wear to athletic events at his school. Yesterday, he sold 23 baseball caps and 20 t-shirts. He earned $200 from t-shirts sales and $287.50 from baseball caps. What is the cost of each baseball cap?
I don’t understand this do any of you do?
Answer:
a reflection across line y, then a translation (1,-5) (right 1, down 5)
Step-by-step explanation:
A(-2,4) → (2, 4) → D(3, -1)
B(-6, 1) → (6, 1) → E(7, -4)
C(-3, 1) → (3, 1) → F(4, -4)
Faith spent $78 at Fashion Warehouse. She bought 2 shirts that each cost $17.50 and a pair of shoes. How much did she spend for shoes?
Answers Choices
A. 34.00
B. 60.50
C. 43.00
D. 113.00
Answer:
C. 43.00
Step-by-step explanation:
If we add up the amount she paid for shirts we would get 35, then we subtract 78 by 35 to get our answer.
What is 2x + 2 when x = 0?
Answer:
i think the answer is 2 because 2*0 is 0 and then add 2 is 2
Step-by-step explanation:
2*0=0
0+2=2
2
Answer:
It should be 2
Step-by-step explanation:
Ok so lets get to work >:3
=============================
2x+2 when x = 0
Plug in our values
2.0+2= ?
Solve
0 +2 =2
And 2 multiplied by 0 is 0 and if we add two it will give is the answer of two
====================================
Hope I could help -
Have a wonderful rest of your day !
Sleepy~
The quadrilateral shown is rotated 90° clockwise about the origin. In which quadrant is the image of the quadrilateral located?
Answer:
Option (2). 1
Step-by-step explanation:
Coordinates of point A, B, C and D are,
A(-4, 4), B(-2, 4), C(-2, 1) and D(-4, 3).
Quadrilateral ABCD when rotated 90° clockwise about the origin,
Rule for the rotation of the vertices,
(x, y) → (y, -x)
Following the rule of rotation coordinates of the image points,
A(-4, 4) → A'(4, 4)
B(-2, 4) → B'(4, 2)
C(-2, 1) → C'(1, 2)
D(-4, 3) → D'(3, 4)
Since all image points have the positive coordinates (x and y coordinates), image quadrilateral A'B'C'D' will be located in 1st quadrant.
Option (2) is the correct option.
A coffee distributor plans to mix some Rift Valley coffee that normally sells for $12.10 per pound with some Mexican Shade Grown coffee that normally sells for $13.10 per pound to create 50 pounds of a new coffee blend that can sell for $12.62 per pound. How many pounds of each kind of coffee should they mix? Answer: pounds of Rift Valley coffee? pounds of Mexican Shade Grown coffee? Round your answers to the nearest whole number of pounds.
Answer:
24 pounds of Rift Valley coffee
26 pounds of Mexican Shade Grown coffee
Step-by-step explanation:
If R is pounds of Rift Valley coffee, and M is pounds of Mexican Shade Grown coffee, then:
R + M = 50
12.10 R + 13.10 M = 12.62 (50)
Substitute:
12.10 R + 13.10 (50 − R) = 12.62 (50)
12.10 R + 655 − 13.10 R = 631
R = 24
M = 26
Which of these is an example of typing at an average rate of 42 words per minute?
A. typing 16 words in 2/3 of a minute
B. typing 28 words in 2/3 of a minute
C. typing 16 words in 3/2 of a minute
D. typing 28 words in 3/2 of a minute
Answer:
I think that it is typing 16 words in 3/2 of a minute.
Step-by-step explanation:
16 times 3 = 48
Im sorry if you get this wrong, i tried my best.
Answer:
It is A
Step-by-step explanation:
What is the slope of the line?
-2
1/2
1
2
Sarah visits an amusement park with an admissions cost of $24. Each ride costs $3. She does not buy any food or drink while she is there. If y represents the total she spends at the park and she takes x rides, which of the following is a function that represents her total spending?
A. y=24x+3
B. x+y=27
C. y=3x+24
D. y=27x
Answer:
Option C. y=3x+24 is the correct answer
Step-by-step explanation:
Using the given information,
Number of rides = x
Total cost = y
Admission cost = $24
The admission cost is a one-time cost that will remain constant while each ride costs 3 dollar so for x rides the cost will be 3x.
The total cost, if she buys no food or drink will be: 24+3x
Now we know that total cost is equal to y then
y = 24+3x
OR
y = 3x+24
Hence,
Option C. y=3x+24 is the correct answer
which expression is equivalent to 4(3+5)-3·9²
i think that the answer is d. this must have 20 characters
Answer:
D
Step-by-step explanation:
Find the length of the third side of the right angle
Answer:
54
Step-by-step explanation:
Please help see the image below
Answer:
12 pi or 37.7units
Step-by-step explanation:
the perimeter is 4 semicircles which is 2 full circles. the formula for circumference of a circle (perimeter) is diameter times pi. the diameter given is 6 so you do 6 pi times 2 full circles which is 12 pi or 37.7 units
Answer:
12pi is ur correct answer