Answers
Answer:
the answer is B!
Step-by-step explanation:
i just did this in class so i hope this helps!
Related Questions
1. Nancy questioned 21 students who were all in the same introductory math class at her college.
2. In the dark Jamie picked out t-shirts from her closet.
Are these biased or non-biased
Answers
Answer:
If I'm right----> (brainliest plz)
if I'm wrong --->(SORRY)
Step-by-step explanation:
i would say A. a convenience sample that is not representative of all first-year college students. there are more than 20 first-year college students in the world so obviously only talking to 20 of them won't be representative of /everyone/
and the convenience is that she only handed them out to people in the library; where she spends most of her time, therefore making it more convenient for her.
Does anyone know this ?
Answers
need help asap
will give brainly
Answers
Answer:
B: congruent to figure A
Step-by-step explanation:
if you reflect figure A across the x-axis the new shape will be the same size and shape as figure A. Which means it is congruent to figure A. So, the answer is B
Answer:
B
Step-by-step explanation:
Listed in the Item Bank are key terms and expressions, each of which is associated with one of the columns. Some terms may display additional information when you click on them. Drag and drop each item into the correct column. The order does not matter.
Answers
Answer: Reflection:
Angle of incidence equals angle of this
Mirrors effectively operate because of this....
Refraction:
Explain why a straw looks broken in a glass of water
Occurs when a wave moves from one medium to another...
Most microscopes take advantage of ....
Diffraction:
X - ray crystallography ....
The spreading out of waves...
Explains why anyone in the classroom can hear that loud teacher...
Step-by-step explanation:
Let us first differentiate reflection, refraction, and diffraction.
Reflection occurs when the waves bounce off the medium or the boundary that is in the way of the wave. Some part of the wave would bounce off, and the others would go through the medium through a process called transmission.
When light for example hits a smooth surface at a certain angle, the light would bounce off, creating an equal going the other way.
Best example of this behavior of light would be the mirror.
Refraction on the other hand, bends the waves as they go through one medium to another medium, or change their direction. The amount or degree of the bend would depend on the medium they go through. If the mediums are different, it would substantially change the wave's path. The reason for this is because the medium changes the speed of the waves that go through them, depending on the material they are made up of.
A classic example of this would be the straw in a glass of water.
Diffraction occurs when the waves go through an opening of the medium or barrier. If the opening is smaller than the wave that passes through it, it would spread out wider, coming out of the opening, but if it is bigger, then the spread would decrease.
In x-ray crystallography, they use this by letting x-rays pass through the spaces in between the crystals.
YOU'RE WELCOME!
Which expression represents the phrase "the quotient of a number and 18"? *
A n - 18
B n + 18
C n ÷ 18
D n x 18
Answers
Answer:
C
Step-by-step explanation:
Quotient means that we are dividing two numbers. Thus, we are dividing a number (n) and 18 which can written as n ÷ 18.
Best of Luck!
Pleese help ...........O.o
Answers
Plz help i need need i know the question is really easy but my brain has stopped working
Answers
Answer:
you do 3 x 13 then buy the milk then it = 30
Step-by-step explanation:
Please help me with these it’s due TODAY!!!!! ( This is Simplifying expressions in 7th grade)
Answers
Answer:
1. 9.5x+1.5
2. 9x+36
3. 4.8x+2
4. 11x+9
Step-by-step explanation:
State whether the number is a solution to the giving inequality.
m<5; 5
Answers
Answer:
No.
Step-by-step explanation:
5=5, so 5 is not greater than 5.
I need help with is work please.
I missed a couple of days and have no idea what to do :(
Answers
heeeeeelp plssssssss
Answers
Answer:
Your right?
Step-by-step explanation:
its the only answer that actually qualifies. Although any number above 20 would work I guess. there are no requirements.
Answer:
I guess 21, its only one that makes sense to me.
Step-by-step explanation:
21 is over 20, and you can sell no less than 20, all other answers are below 20, so the only one that makes sense is 21.
Hope i helped :)
A cylindrical tube of length 27.75 cm and radius 2.00 cm is filled with argon gas. The empty tube weighs 188.25 g. The tube filled with argon weighs 188.87 g. Calculate the density.
formula =
[tex]V = \pi r^2h[/tex]
Answers
Step-by-step explanation:
V= π(2)^2(27.75)
= 348.72cm^3
D=188.87g/348.72cm^3
= 0.54g/cm^3
What are the coordinates of the image of point B after a dilation with center (0, 0) and scale factor of 1 divided by two?
(2,2)
(1,2)
(4,8)
(2.5,4.5)
Answers
Bob bought a new book and paid $2.10 tax on the book. If the tax rate was 7 ½%, what was the cost of the book?
Show your work!
Answers
2 x 7.5 = 15
0.10 x 7.5 = 0.75
15 + 0.75 = $15.75
Hope this helped
Plz need help this is hw
Answers
Answer: A= 1,-5 b=5,-3
Step-by-step explanation: i dont have one
Help text math XD thank you
Answers
Answer:
14 deliveries
Step-by-step explanation:
First we have to find out how much he makes in a day aside from what he makes a day aside from his deliveries, so 9 x 8 = 72. Then we take 155 - 72 = 83. Then since he wants to make more than 155, we'll add one to 83, then take that divided by 6. 84/6=14. So he'd have to make at least 14 deliveries to make $156 in a day.
Answer:
D. 14
Step-by-step explanation:
Write the expression (explanation)
9 per hour= 9xh= 9h
and= addition
6 each delivery= 6xd=6d
more than= >
Final expression you need to solve
9h+6d>155
how many hours?: 8 hours
9(8)+6d>155
solve for d
72+6d>155
6d>83
d>~13.83
He cannot make less than 13.83, so you would round it up to 14.
PLZ HELP!!!!!!!!!!!!!!!!!!!!!
Answers
I’m so sorry if I’m wrong
Answer:
288 I think or maybe 312
Step-by-step explanation:
this is a fraction so whats 1/2 x 7/9
Answers
Answer:
7/18
Step-by-step explanation:
pls help im so stuck on this oneee
Answers
Answer:
the ans is a
Step-by-step explanation:
help pls I dont know
Answers
Answer:
All of them are correct!
i hope this is correct! c:
Help me and you will get points.
Answers
Answer:B) i ,j ,k
Step-by-step explanation: look at pic below.
Step-by-step explanation:
Answer: C
Step-by-step explanation:
Marissa deposited $900 in her savings account. The rate of simple interest is 5% per year. Find the balance at the end of 4 years
PLEASE HELP ASAP!!!
Answers
Diego’s family car holds 18 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel drops below 1.5 gallons. Diego wants to know how many days they can drive without the warning light turning on. Write and solve an inequality that represents this situation. Explain clearly what the solution to the inequality means in the context of this situation.
only smart people can do this
Answers
In a forest, it rained 36 out of 90 days. What is a decimal equivalent of 36 out of 90?
Answers
Answer:
0.4
Step-by-step explanation:
36/90 = 40%
in decimal format that would be 0.4
Answer:
0.4
Step-by-step explanation:
ASAPPP 80 POINTSS How many times as large as the radius of a hydrogen atom are the radii of the mercury and the radii of the uranium atoms?
Show your work
Answers
Answer:
divide 1.5x10^-10 by 2.5x10^-11 which is 6 meaning the Mercury atom is 6 times larger than a hydrogen atom.
Step-by-step explanation:
im sure thats right !
Answer:how many times as large is the approximite radius of a mercury atom, 1.50*10^-10 meter, as the approximite radius of a hydrogen atom, 2.5*10^-11 meter?
Step-by-step explanation:
Math Question!! Help!
Answers
Answer:
350,000
Step-by-step explanation:
1,000,000 - 650,000
Solve and graph the inequality on a number line: -2.25w ≥ 13.5
Answers
Explanation: divide both sides by -2.25
13.5/-2.25= W<-6
Answer:
The answer is A becouase the line is more close to the 0 place, try it!
Step-by-step explanation:
The number 13.5 is more so the number line A would mostlikly reprerepresent the quistion. (What its asking you)
Find the difference of the two expressions.
(5/8x + 5) - (2/8x - 2)
Answers
Answer: 3/8x + 7
Step-by-step explanation:
5/8x + 5 - 2/8x + 2 <— make sure you distribute the negative.
3/8x + 7
help please! this is for a grade!asap!
Answers
Answer:
1. 3/4
2. 1/2
3. 7/12
4. 2/3
5. 1/12
6. 1/2
7. 39/8
8. 59/10
Step-by-step explanation:
2) 9/10-8/10=1/10
3) 2/12+5/12=7/12
4) 2/6+2/6=4/6 (or 3/4 simplified)
5) 9/12-8/12=1/12
6)2/8-1/8=1/8
7)2 3/8+2 2/4
Let’s figure this out together.
For the first part we know that whole numbers in this question are 8/8
And because 2 is a whole number that it is 8/8 two times. So 16/8. Next we add the 3 because, although it’s not a whole number, it’s still a part of the equation. 19/8
Now for the next part of this equation we need to make sure that the denominator is the same as the denominator to the first part. (In a fraction numerator/denominator)
The denominator in the first part was 8. In this part it is 4. To be able to add, subtract, multiply, or divide, the denominator has to be the same. So we multiply 2/4 by 2/2to get 4/8. It’s not changing the quantity. Instead just the way it’s shown.
Again, 16/8 and add a 4. 20/8.
Bring the two parts together.
19/8+20/8=39/8
Now to make it a mixed number we need to find out how many times 8 can go into 39. The answer is 4 times. With 7 left over. So 4 7/9
8) doing the same thing we get the answer to be 35/10+24/10=59/10
=5 9/10
Write an equation for the situation below.
A gym holds one 60-minute exercise class on Saturdays and several 45-minute classes during the week. Last week all of the classes lasted a total of 285 minutes. Write an equation you can use to find the number
of weekday classes. Use x for your variable.
Write your variable term first, then your constant. please help!!
Answers
Answer:
45x +60 = 285
Step-by-step explanation:
60 minutes + 45 minutes * x week-days -classes = 285 total
60 +45x =285
45x +60 = 285
