Given:
Last year 80 students signed up for a summer trip to Washington, D.C.
This summer 50 students have signed up to go.
To find:
The percent decrease in the number of students.
Solution:
We have,
Students in last year = 80
Students in this year = 50
Now,
[tex]\text{Decrease}\%=\dfrac{\text{Students in last year - Students in this year }}{\text{Students in last year }}\times 100[/tex]
[tex]\text{Decrease}\%=\dfrac{80-50}{80}\times 100[/tex]
[tex]\text{Decrease}\%=\dfrac{30}{80}\times 100[/tex]
[tex]\text{Decrease}\%=\dfrac{3}{8}\times 100[/tex]
[tex]\text{Decrease}\%=37.5[/tex]
Therefore, the correct option is B.
I NEED HELP ON THIS POR FAVOR
There are 120 students in the seventh grade, and 25% are in the Environmental Club.
How many students are in the Environmental Club?
Insert the values given in the problem then scale up or down
to find the missing value.
students
Help me out
1 markers cost $7.04
Which equation would help determine the cost of 7 markers!
Noah has a coupon for 30% off at his favorite clothing store . He uses it to buy a hoodie . The regular price of a hoodie is $27. What did Noah pay for the hoodie?
Answer:
$18.90
Step-by-step explanation:
The way to do percentages is actually pretty easy.
since it's taking 30% of you are left with 70%. Take 70 and divide it by 100. This gives you .70
Now what you do is you take the price of the time and multiply it by the .70
So 27.00 * .7 = 18.90
So Noah paid 18.90
Math help: Variables
I need help solving these two questions, explanations would be greatly appreciated.
Answer:
1. h = 11 cm
2. d = 220 km
Step-by-step explanation:
1. A = 1/2bh
Where,
A = 66 cm²
b = 12 cm
A = 1/2bh
66 = 1/2 * 12 * h
66 = 6h
h = 66/6
h = 11 cm
2. s = d/t
Where,
s = 110 km/h
t = 2h
s = d/t
110 = d/2
Cross multiply
110 * 2 = d
d = 220 km
Please help using symbols, will give brainlist if correct
Answer:
(-7,4]
Step-by-step explanation:
I'm going to assume that you need this in interval form
The domain is just asking for all the possible x values
The x value that's furthest to the left is -7 and because it's an open circle we write ( instead of [
the furthest to the right the line goes is 4 and because the circle is closed it's written with ]
but it all together and get
(-7,4]
3 5.73
Simplify the expression
1
+
2
+
and write the result in the form a + bi.
2
4
2
a.
-2.41
C.
2
b. 5
-2 3i
-2√3i
4
5
- Vi
4
d.
what is the area of the figure below
Answer:
390cm
Step-by-step explanation:
1. find area of rectangle
1. 15cm x 20cm= 300 cm
2. find area of triangle
1. 1/2 (12 x 15)= 90cm
300+90
what persintage is 22 out of 25
Answer:
88
Step-by-step explanation:
Answer:
it is 88%
Step-by-step explanation:
if you convert the fraction into a decimal which is 0.88 as a decimal and then multiply that by 100 and its 88%
In order to create a system of equations with the same solution as the system {x+y=102x+y=14, { x+y=10 2x+y=14 , Camilo multiplied both sides of the second equation by a number, added the new equation to the first equation, and replaced the first equation with the result. Which system of equations could be Camilo's new system?
Answer:
-3x-y=-18
2x+y=14
Step-by-step explanation
i re took the test until i got it right to answer this lol, its correct and good luck with school
I will you brainiest if you can answer this
someone please help, i don't understand
Answer:
Y = [tex]\frac{-3}{2}[/tex] x + 4
Step-by-step explanation:
If a 5-pound bag of potatoes costs $5.25 , then how much would 7 pounds cost?
Answer:
7.35
Step-by-step explanation:
5 pounds -> 5.25
1 pound -> 1.05
7 pounds-> 7.35
PLEASE PLEASE HELP ME
Answer:
169.646
Step-by-step explanation:
V=πr2h=π·3 squared·6
what is the y-intercept of a line that has a slope of -3 and passes through point (0-7)
Answer:
-7
Step-by-step explanation:
What is the value of p?
the answer is p=6
hope that helped loll
Answer: 6
Step-by-step explanation:
In a triangle, all three angles always add to 180°.
Thus, simply do 180 - 96 - 54 to get the angle, 30. Then, because the angle is 5p, divide 30/5 = 6.
Hope it helps <3 :D
Find f(-5) if f(x) = |x + 1|
Answer:
4
Step-by-step explanation:
f(-5) = I-5 + 1I = I -4 I = 4
Brian, Josh, Chad, Jordan, Ryan, and Rachel are the 6 players in a round-robin racquetballtournament. Each player will play aset against each of the other players. List all the sets that need to be played.
there are 15 sets that need to be played in the tournament. To list all the sets, we can simply list all the possible combinations of 2 players from the group of 6.
What is the combination?
In simple words, combination involves the selection of objects or things out of a larger group where order doesn't matter. The formula for combination helps to find the number of possible combinations that can be obtained by taking a subset of items from a larger set.
There are a total of 6 players in the round-robin racquetball tournament, which means that each player will play a set against each of the other 5 players.
To determine the total number of sets that need to be played, we can use the combination formula:
nC₂ = (n*(n-1))/2
where n is the number of players.
In this case, n = 6, so:
6C₂ = (6*(6-1))/2 = 15
Hence, there are 15 sets that need to be played in the tournament. To list all the sets, we can simply list all the possible combinations of 2 players from the group of 6:
Brian vs. Josh
Brian vs. Chad
Brian vs. Jordan
Brian vs. Ryan
Brian vs. Rachel
Josh vs. Chad
Josh vs. Jordan
Josh vs. Ryan
Josh vs. Rachel
Chad vs. Jordan
Chad vs. Ryan
Chad vs. Rachel
Jordan vs. Ryan
Jordan vs. Rachel
Ryan vs. Rachel
To learn more about the combination visit,
https://brainly.com/question/28065038
#SPJ1
3x-2y=10 7x=2y=30
yea no i dont know how to do this.
Which group of ordered pairs are on the line given by the equation 5x – 2y = 6?
if 9 out of 25 people are left-handed what percent are right-handed
Answer:
64%
Step-by-step explanation:
If 9 out of 25 people are left-handed
That means 25-9 = 16 people are right handed
or 16/25 are right handed
Multiply the top and bottom by 4 to get it out of 100
64/100
Percent means out of 100
64% are right handed
5% of a number is 31 1% of the same number is 6.2
Work out 13% of the number.
Answer:
80.6
Step-by-step explanation:
1%-> 6.2
13%-> 6.2x13=80.6
6. Jenny is training for a marathon and runs and a constant rate of 6 miles per hour.
a) What is the distance, d, in miles, that Jenny runs in t hours. Write an equation to represent this situation.
simplify 8n + 3 - 4 + 4n show work pls
Answer:
11n
Step-by-step explanation:
8n + 3= 11n
11n-4=7n
+4n=11n
Answer:
1.Subtract the numbers:
8n+3-4+ 4n
8n-1+ 4n
2.Combine like terms
8n-1+4n
12n-1
solution
12n-1
Step-by-step explanation:
I hope this can help you!!
What is the volume of the pyramid?
Answer:
It’s a blank page sorry
Step-by-step explanation:
When using substitution to solve a system of equations, how can you tell when a system has no solution? Use the drop-down menus to explain your answer.
A system has no solution when the resulting equation is always
Choose...
.
Choose...
is an example of this type of equation.
Answer:False
Step-by-step explanation:
The commenter before me is trolling. If 3=5, that is a false equation, not true.
There is a photo Below as an attachment or probably shown.
If you spin the spinner 20 times, how many 5’s? please help
Answer:
4 times you divde 20 and 5 and its 4
Step-by-step explanation:
Answer:
Its 4 Fives
Step-by-step explanation:
If its wrong i'm sorry
help me solve this pls! (For 25 points)
What role does the griot have in African culture?
keeping records about trade among cultures
creating artistic drawings about daily life
serving as the religious leader of a village
telling stories to pass on history and ways of life
Answer:
D
Step-by-step explanation:
Because the guy above me is big brain
Answer: D
Step-by-step explanation:
shari has 7 months to save $294 for a vacation. how much must shari save each month in order to save at least $294 for her vacation