Kiri is curious how many people think aliens exist. She asked the 30 students in her class.
12 students said they think aliens exist.
What percent of the class is that?
Answers
Answer:
40%
Step-by-step explanation:
12/30=0.4 round then you get 40%
The percentage of students who thinks aliens exist is
What is Percentage?Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number. So the percentage actually means a part per 100.
Percentage is usually denoted by the symbol '%'.
Total number of students in the class = 30
Number of students who think aliens exist = 12
Percentage of 12 in the number 30 can be found by dividing 12 by 30 and then multiply with 100.
Percentage = (12 / 30) × 100
= 0.4 × 100
= 40%
Hence 40% of students believe that the aliens exist.
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Related Questions
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
PEDMAS?
Example 1:
3+8(4-2)-7
Parentheses First = 3+8(2)-7
Exponents-none
Multiply/Divide 3+16-7
Add/Subtract 19-7 = 12
Example 2:
32-(9-5)+7x3-8÷2
Parentheses 32-(4)+7x3-8÷2
Exponents 6-4+7x3-8÷2
Multiply/Divide 6-4+21-4
Add/Subtract 2+17=19
Review
Directions: Compute the answers using PEMDAS.
1) 7 x 5 + 3=
2) 8 - (6 + 2)=
3) 10 - 6 + 5=
4) (21 3) x 2=
5) (12 6) + 6=
6) 3 + 10 5=
7) 8 + 4 - 2=
8) 7 + 5 - 5=
9) 16 8 - 1=
10) (20 - 17) - 3=
11) 8 + 2 - 7=
12) 18 (4 + 2)=
13) 8 - 6 + 7=
14) 5 - (18 6)=
15) 2 + 13 - 4=
16) (7 - 4) + 3=
17) 9 - 7 + 4=
18) 2 x 6 3=
19) 15 5 + 4=
20) 8 + 6 - 4=
Answers
Answer:
1. 38
2. 0
3. -1
4. 14
5. 8
6. 5
7. 10
8. 7
9. 1
10. 0
11. 3
12. 2
13. 5
14. 3
15. 11
16. 6
17. 2
18. 4
19. 7
20. 10
Step-by-step explanation:
Here are the answers to the review questions using PEMDAS:
1) 7 x 5 + 3= 38
2) 8 - (6 + 2)= 0
3) 10 - 6 + 5= 9
4) (21 / 3) x 2= 14
5) (12 / 6) + 6= 8
6) 3 + 10 x 5= 53
7) 8 + 4 - 2= 10
8) 7 + 5 - 5= 7
9) 16 / 8 - 1= 1
10) (20 - 17) - 3= 0
11) 8 + 2 - 7= 3
12) 18 x (4 + 2)= 108
13) 8 - 6 + 7= 9
14) 5 - (18 / 6)= 2
15) 2 + 13 - 4= 11
16) (7 - 4) + 3= 6
17) 9 - 7 + 4= 6
18) 2 x 6 / 3= 4
19) 15 / 5 + 4= 7
20) 8 + 6 - 4= 10
Sam has a deck that is shaped like a triangle with a base of 18 feet and a height of 7 feet. He plans to build a 2:5 scaled version of the deck next to his horse's water trough.
Part A: What are the dimensions of the new deck, in feet? Show every step of your work. (4 points)
Part B: What is the area of the original deck and the new deck, in square feet? Show every step of your work. (4 points)
Part C: Compare the ratio of the areas to the scale factor. Show every step of your work. (4 points)
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
6
Step-by-step explanation:
18-2.5+7 there s your helllppppppppppp
New base = 18 x 2/5 = 7.2 feet
New height = 7 x 2/5 = 2.8 feet
Therefore, the dimensions of the new deck are 7.2 feet for the base and 2.8 feet for the height.
Part B: To find the area of the original deck, we can use the formula for the area of a triangle, which is:
Area = (1/2) x base x height
Area = (1/2) x 18 x 7 = 63 square feet
To find the area of the new deck, we can use the same formula and plug in the new dimensions:
Area = (1/2) x 7.2 x 2.8 = 11.88 square feet
Therefore, the area of the original deck is 63 square feet and the area of the new deck is 11.88 square feet.
Part C: The ratio of the areas is:
63/11.88 = 5.303
The scale factor is:
2/5 = 0.4
To compare the ratio of the areas to the scale factor, we can divide the ratio of the areas by the scale factor:
5.303/0.4 = 13.2575
Therefore, the ratio of the areas is 13.2575 times the scale factor.
Last summer, Jesse’s family drove to visit his grandmother. Jesse kept track of how far they drove each day. Monday: 242 mi. Tuesday: 324 mi. Wednesday: 212 mi. Thursday: 363 mi. Friday: 132 mi.
Use front-end estimation to find a reasonable estimate of the total distance Jesse’s family traveled.
A) 1000 mi.
B) 1100 mi.
C) 1200 mi.
D) 1300.
Answers
The correct option is C 1200 mi. A reasonable estimate of the total distance Jesse's family traveled is 1200 mi.
Front-end estimation involves rounding numbers to the nearest place value and then performing calculations. Round each day's distance to the nearest hundred to simplify calculations.
Round each day's distance: Monday 200, Tuesday 300, Wednesday 200, Thursday 400, Friday 100.
Add the rounded distances:
200 + 300 + 200 + 400 + 100 = 1200.
The estimate of the total distance traveled is 1200 miles, which matches option C.
Front-end estimation is a quick method for approximate calculations, especially when precise values are not required.
Learn more about estimation calculations here:
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can someone help :"(((((((((((((
Answers
Answer:
Dilation of 0.5 about the origin
Step-by-step explanation:
Half of -2 is -1, so that equals -3 and half of 0 is 0, just leaving that zero. This process is completed for W and V, getting you your other answers.
The difference between two rational numbers is always negative true or false?
Answers
Answer:False
Step-by-step explanation:
A scale model of an object has a scale of 1 cm : 3 ft. The actual object is 18 feet tall. How tall is the model?/ A scale model of an object is 6 inches tall. The actual object is 324 feet tall. What is the scale factor of the model?/PLEASE HELP ME SOLVE ALL OF THESE PROBLEMS !!!!!!!!!!!!!!!!!!!!!!!!!
and please answer all of them or I will report ur answer
Answers
Answer:
108 centimeters
Step-by-step explanation:
Given that :
Scale model used for the Eiffel Tower :
2 centimeter represents 6 meters;
This means 2 centimeters on the model represents 6 meters of the Eiffel Tower.
To obtain the height of the model in centimeter :
Let the height of the model = h
h of model = actual height of tower
Actual Height of tower = 324 meters
Using cross multiplication :
2 = 6
h = 324
6 * h = 324 * 2
6h = 648
h = 648 / 6
h = 108
Hence, height of the model = 108 centimeters
Answer: 108 centimeters
Step-by-step explanation:
2 centimeters represents 6 meters;
This means 2 centimeters on the model represent 6 meters of the Eiffel Tower.
Let the height of the model = h
h of the model is = to the actual height of the tower
Actual Height of tower = 324 meters
2 = 6
h = 324
6 x h = 324 x 2
6h = 648
h = 648 divided by 6
h = 108
what point below is the solution to the expression 2x+y=12
A) (4,2) C) (8,-1)
B) (3,6) D) (0,6)
Answers
Answer:
Step-by-step explanation:
It's B.
Let's rewrite the expression like this :
2x+y=12 ⇒ y=12-2x
and try given values for x :
if x=4 ⇒ y=12-(2×4)=12-8=4 ( so it is not 2 ) ⇒ wrong if x=3 ⇒ y=12-(2×3)=12-6=6 (it is 6) ⇒ right if x=8 ⇒ y=12-(2×8)=12-16=-4 (so it is not -1) ⇒ wrong if x=0 ⇒ y=12-(2×0)=12-0=12 (so it is not 6) ⇒ wrongHELP PLEASE, I'LL GIVE BRAINLIEST (I think I spelled that wrong)
Answers
Answer:
the answer is 32
Step-by-step explanation:
the sum of angles in a triangle is 180° and if we subtract 116 from that we get 64. now since the sides of the triangle are the same we need to divide 64 with 2 and we get 32
Answer:
32 degrees
Step-by-step explanation:
So, based on the side lengths, the triangle is isosceles since two of the sides are of equal length. So, in isosceles triangles the two base angles are congruent. If there are 180 degrees in a triangle, then 180-116 would be the sum of the remaining base angles in the triangle.
180-116=64
So, divide 64 by 2 since the two angles are equal and have a sum of 64
So, x would be 32 degrees
Trina drove to her aunt's
house in Florida. She drove the
first 2½ hours at a constant
speed of 65 miles per hour.
Then, she drove the rest of the
way at a constant speed of 55
miles per hour. If it took Trina
six hours to drive there
without any stops, how many
Emiles did she drive to get to her
aunt's house?
2015 Brittney Fleld Games4Gains.c
Unit. Rates Level 2
Answers
Answer:355 miles
Step-by-step explanation:
It took 6 hours to reach her aunt's house, which means that 2 1/2 hours is spent at 65 miles per hour which we get as 162.5. The rest of the trip took 3 1/2 hours at a constant speed of 55 miles per hour which we got 192.5 miles. Adding them together, we get 355 miles in 6 hours.
find the value of a and be when x is 12 a= 5x^2/2 b= 2x^2(x-5)/10x
Answers
Answer:
a=360
b=168
Step-by-step explanation:
a=5×12×12/2=5×12×6=360
b=2×12×12×(12-5)/10×12=2×12×7=14×12=164
ASAP PLEASE!!!!!!!!!!!!!!!!!!!!1
Answers
Answer:
141 in²
Obviously don't write 141 in² because they've already wrote the in² part for you
At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.
Ketchup Relish Chili
54 36 60
Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042
Answers
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Answer:
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Step-by-step explanation:
20 POINTSSSSSSSSSSSSSSS Veronica is 4 1/2 inches taller than Aracely. Aracely is 56 3/4 inches tall. how tall is veronica A. 61 1/4 B. 60 1/4 C. 61 1/2 D 61
Answers
Answer:
A. 61 1/4
Step-by-step explanation:
56.75+4+50=61.25 = 61 1/4
17 POINTS !! WILL GIVE BRAINLIEST !!
Answers
Answer:
The answer is A
9. A rectangle has a perimeter of 62 inches. The length of the rectangle is 18 inches. What is the approximate width of the rectangle in centimeters? (1 inch is approximately 2.54 centimeters)
A. 33 cm
B. 610 cm
C. 65 cm
D. 152 cm
Answers
Answer:
when you write out the equation the answer comes out to letter D
Answer:
33
Step-by-step explanation:
The rectangle's perimeter = 62 inches.
The length = 18 inches.
The width: 62 ÷ 2-18 = 13 inches.
1inch ≈ 7.54 centimeters.
13 inches = 13x2.x4 = 33.12 centimeters.~33 cm.
Choose A
The perimeter of the rectangle = (The width + The length) xz }
What is the measure of angle 2 if angle 1 is (5x - 2) and angle 2 is (2x)?
Answers
Answer:
52 degrees
Step-by-step explanation:
We're given:
Angle 1 = 5x-2Angle 2 = 2xThe sum of the two angles is 180 degrees, because they construct a straight edge together. A straight line has an angle measure of 180 degrees.
Knowing this, we can form the following equation and solve for x:
\(5x-2+2x=180\\7x-2=180\\7x=182\\x=26\)
Therefore, x is 26. Find 2x to find the measure of Angle 2:
\(2*26=52\)
Therefore, Angle 2 has a measure of 52 degrees.
Answer:
52
Step-by-step explanation:
Angle 1 and angle 2 are on a straight line so their measure add up to 180 and they are supplementary
m<1 + m<2 = 180
5x - 2 + 2x = 180 add like terms
7x - 2 = 180 add 2 to both sides
7x = 182 divide both sides by 7
x = 26
To find the measure of angle 2 replace x with the value we found
m<2 = 2x
2*26 = 52
What is the prime factorization of 51?
Enter the factors from least to greatest.
Answers
Answer: is 3 and 17
Step-by-step explanation:
So, the prime factorization of 51 is 51 = 3 × 17, and the prime factors of 51 are 3 and 17.
Answer:
Step-by-step explanation:
1) Use prime factorization.
3 | 5 1
|______
17
2) Therefore, the prime factors are:
3, 17
Factors of 51
1, 3, 17, and 51
thanks.
Ralph is arranging a wedding reception. He can spend no more than $8000. It costs $6000 to rent the hall and $25 to feed each guest. Ralph needs to know how many guests, at most, can attend the reception. Write an inequality to represent this situation.
Answers
Answer:
80 ≥ x
Step-by-step explanation:
So we know that he cannot spend more than $8000.
So we subtract 6000 from 8000
8000 - 6000 =2000
So that means $2000 to feed each guest
We then divide the amount of money we have left by how much it costs to feed each guest.
2000÷25=80
So at most 80 guests will be able to attend. I'll use x to represent the amount of people that will attend the reception.
So 80 ≥ x
If I am wrong please comment so that I can fix it.
Hi answer these I can’t give out more because the other day I gave out 50 point and someone didn’t answer they just said look it up so please help god bless if so
Answers
Answer:
1a) 0
1b) 165
1c) It was folded 5 times
1d) Im not sure, I'm so sorry
1E) A=3
Step-by-step explanation:
Hope this helps! No worries, about the points, the same thing happened to me.
A line passes through the points (2,2) and (3,9). What is its equation in point-slope form?
Answers
slope formula
(y2-y1) / (x2-x1)
(9-2) / (3-2) = 7
slope 7
point (2,2)
y - y1 = m(x - x1)
y = m(x-x1)+y1
y = 7(x-2) + 2
In the picture, ∆TNM~∆KYM.
What is the length of side NM?
Answers
Answer:
missing length: 3
solving similarities:
\(\sf \frac{YK}{YM} = \frac{TN}{NM}\)
\(\sf \frac{2}{1} = \frac{6}{?}\)
\(\sf ? = \frac{6*1}{2}\)
\(\sf ? = \frac{6}{2}\)
\(\sf ? = 3\)
NM be x
\(\\ \rm\hookrightarrow \dfrac{x}{6}=1/2\)
\(\\ \rm\hookrightarrow 2x=6\)
\(\\ \rm\hookrightarrow x=6/2\)
\(\\ \rm\hookrightarrow x=3\)
Help! 15 points!
I need help with 40-43. The constant is 1/3 and the direct proportion equation is y=1/3x
Answers
Another brand of sheets is on sale 30% off with a regular price of $18.00 per sheet. Which is a better deal, the previous example or this one? Explain
Answers
Answer:
It would cost 12.60 dollars for the company in the problem. If you could send the other company's deal I could write the answer in the comments.
Step-by-step explanation:
100% - 30% = 70%
70% to demical = 0.7
So, I would do...
18 times 0.7 to get 12.6
The answer you get would be $12.6
The formula I used for this was...
( T ) * ( 1 - S ) = F
T is the Total cost
S is the amount of sale in percent to decimal form
F is the final amount
Hope this helps :)
If you multiply 2 times $2.00, you get $4.00. If you add $2.00 and $2.00 you get $4.00. If you multiply 3 times $1.50, you get $4.50. If you add $3.00 to $1.50 you also get $4.50. If you multiply 5 times $1.25 you get $6.25. If you add $5.00 to $1.25 you also get $6.25. Six times what amount of money would give the same amount as $6.00 added to that amount?
Answers
Answer:
1.00
Step-by-step explanation:
\(1.00 \times 6\)
1.00x6 = $6.00
Help me please!!!! What percent of data is above the 38?
Answers
Answer:
the answer I think is a or d
Step-by-step explanation:
Answer:
c. 75%
Step-by-step explanation:
Which of the graphs is the best example of a line of best fit?
Answers
Help Please!
Please make sure this is the right answer.
Answers
Robin wants to buy a membership at a carwash this summer so that she can keep her car clean. She compared deals from Speedy Clean Carwash and Sudsy Bubbles Carwash to decide which membership to get. Robin arranged the information in the tables below.
How many times will Robin need to wash her car to spend the same amount at both carwashes?
P.S.: I attached the table below:)
Answers
what is the answer i need answers now
Answers
Answer: 0.27, 1/3, 1 1/4, 1.35
Step-by-step explanation:
Answer:
D. 0.27. 1/3. 1 1/4. 1.35
Step-by-step explanation:
1/3 = 0.3
1 1/4 = 1.25
1. 0.27
2. 0.3 or 1/3
3. 1.25 or 1 1/4
4. 1.35