Answer:
19,20,21
Step-by-step explanation:
The average is 20. The numbers can be written as: 20+a, 20 +b, 20+c, with a, b, c integers (positive and negative, but higher than - 19),with a+b+c =0.
You have to find the combination a, b, c with the smallest positive integer as its higher number.
Obviously, you start with 1, and find - 1,0,+1 as a suitable solution.
Therefore, the numbers are 20-1, 20,20+1
=> 19,20,21
Answer:
4x times 5x equals 20x
20x times 1x equals 20x
15x plus 5x equals 20x
Step-by-step explanation:
hope it helps
Hazel is putting together charm bracelets. For each bracelet 1/5 of a yard of string and 12 charms. hazel has 5/8 of a yard of string and 96 charms. she makes the charm bracelet until all of the string is gone. what fraction of charms did she use?
Answer:
3/8
Step-by-step explanation:
First, find the number of bracelets she's able to make with her string. She has 5/8 of a yard and uses 1/5 per bracelet. To divide the number of yards she has by the number she uses, multiply 5/8 by the reciprocal of 1/5 (5/1).
5/8 * 5/1 = 25/8
25/8 is 3.12500, which is the number of bracelets she can make. It rounds down to 3 since she can't make 0.12500 bracelets.
Now, find how many charms she used. 3 bracelets * 12 charms each is 36 charms in total.
So she used 36/96 of her charms. This can be simplified to 3/8.
Answer:
37/96 hazel has
Step-by-step explanation:
1/5 times 12=60
so Hazel uses 1 yardd for 60 charms, so for 5/8 yard Hazel would use 5/8×60=37.5.
since Hazel isn't able to use a fraction of a charm, she would use 37 charms
37/96 Charms Hazel has
Collin has 25 pounds of dog food. He feeds the dog 1.252 pounds. How much dog food does Collins have?
Answer:
The answer is 23.748 pounds.
Step-by-step explanation:
25-1.252= 23.748
If this is incorrect, line up your decimal point and subtract.
Use what you know about the number of faces, vertices, and edges in polyhedrons to choose True or False for each statement.
A triangular pyramid has the same number of faces as vertices.
Choose...
A triangular prism has the same number of faces as vertices.
Choose...
The sum of the faces and vertices for a triangular prism is 11.
Choose...
The number of edges of a polyhedron is 2 less than the sum of the number of faces and vertices.
Choose...
Answer:
Step-by-step explanation:
#1 true
#2 false
#3 true
#4 i need the choices
Answer the image below:
Qu.{4, 7, 9} U {4, 9, 12, 15}
A. {4,9}
B.{4,7,9}
C.{4,7,9,12,15}
D.{ }
If your bill at a restaurant is 36.77 and you want to leave a 20% tip how much $ should you leave for your tip? Round your answer to the nearest cent (nearest HUNDREDTH) as a decimal!
Answer:
$7.35
Step-by-step explanation:
36.77 Times (x) 0.2 (percentage)
7.354
round
$7.35
EX: If it was on 20% off and an item was 36.77 then you would also mutliply it and then subtract 7.35 from 36.77
!!Remember the last part is an example if it was a discount!!
Based on signal strength, a person knows their lost phone is exactly 47 feet from the nearest cell tower. The person is currently standing 23 feet from the same cell tower. What is the closest the phone could be to the person?
=========================================================
Explanation:
It might help to draw out a diagram. Refer to the image below. Point A is the cell tower location. Point B is where the person is located. This is a birds eye view. Point B is on the smaller circle of radius 23 ft. The cellphone, which has unknown location, is somewhere on the larger circle of radius 47 ft.
The best case scenario is that the phone is on ray AB, which would make the phone to be 47-23 = 24 ft away from the person. This is the closest the phone could be.
------------------
Extra info:
On the flip side, the worst case scenario is that the phone is on the diametrically opposite side. This would mean the distance from the phone to the person is 47+23 = 70 ft. So the range of possible distances d is [tex]24 \le d \le 70[/tex]
how can you find the vertex of a parabola if you know it's focus and directrix? in my equation, the focus is (6,4) and the directrix is y=-2
Answer:
The vertex would be (6,1)
Step-by-step explanation:
The vertex is the midway between the focus and the directrix. The X of the vertex would be the same but to get the Y of the vertex you would need to take the average of the Y values. (6, 4 + (-2)/2) (6,1)
Please help. I WILL GIVE BRAINLIEST!
Answer:
I think the answer is sales tax
Step-by-step explanation:
HELP ME IVE ASKED MANY TIMES :(
Two lines meet at a point that is also the vertex of an angle. Set up and solve an appropriate equation for x and y.
Answers
x = 90
y = 90-16=74
Step-by-step explanation:
A house was valued at $389,000. Over several years, the value increased by 18%, giving the house a new value. Write the new value in terms of the old value.
Write your answer as a decimal. Use your answer in part (a) to determine the new value.
Answer:
Is it your house? if not then don't worry about it
Step-by-step explanation:
Answer:
459,020
Step-by-step explanation:
18% is 70,020. Add that to the original number and there you go!
For a chess tournament, there needs to be 3 teachers for every 18 students. If there are 11 teachers, how many students can go to the chess tournament?
What is the constant of proportionality? You can think about this as 18 is how many times as much as 3.
Number of Teachers Number of Students
3
×
18
11
Step-by-step explanation:
Solution:
Given,
3 Teacher = 18 students
11 Teacher = X students ( let no. of student be x)
Now,
1 teacher = 18/3
= 6 students
So, If 1 teacher is there then 6 students can play chess.
again,
No. of teacher = 11
No.of students = X
Now,
X= No.of teacher × No.of students for 1 teacher.
= 11 × 6
= 66
So , 11 Teachers can handle 66 students.
There propotion is 11/66 = 1/6 = 1:6.
Answer:
1:6 is the answer
Step-by-step explanation:
can someone help me in this problem please :C
2/3? please im not einstien
Answer:
1/6 cu feet
Step-by-step explanation:
2/3 x 1/4 = 1/6 x 1 = 1/6 cu feet
Karen is planting 18 bushes and 12 trees in rows. If she wants all the rows to be exactly the same, with no plants left over, what is the greatest number of rows Karen can plant?
? rows
Answer:6
Step-by-step explanation:
The LCM of those two
(this is 6th grade math) (((:
explain why 6^3x7^3=42^3 is correct.
Answer:
[tex] {6}^{3} \times {7}^{3} = {(6 \times 7)}^{3} = {42}^{3} [/tex]
Step-by-step explanation:
When two or more quantities have the same exponents, their bases can be multiplied together.
10 times what equals 12.5 pls help me, someone
Please try to help ASAP, thanks so much!!
The box plot below shows the total amount of time, in minutes, the students of a class surf the internet every day:
(Image below)
Part A: List two pieces of information that are provided by the graph and one piece of information that is not provided by the graph.
i need help with this can someone help?
option second
Step-by-step explanation:
the probability of snow on Wednesday is -42%
2nd option) The probability of snow on wednesday is -42%
Explanation: As much I know, probability is never ever negative.. so no doubt opt B is wrong.
can ya'll help me pls
Answer:
The answer is 280 I believe or C but I think A
Step-by-step explanation: I'm not 100% though
10 ÷ 5 + 4 ( 72 - 6 )
Answer:
266
Step-by-step explanation:
Three siblings are born on the same date in consecutive years.
The sum of their ages is 42. What is the age of the oldest sibling?
A. 13
B. 14
C. 15
D. 16
Answer:
C.
Step-by-step explanation:
15+14+13=42
Hope this helps :)
The age of the oldest sibling is 15 years old.
What is consecutive number?
Numbers that follow each other continuously in the order from smallest to largest are called consecutive numbers.
Here, let the age of youngest sibling be x years
the age of middle sibling be (x+1) years
the age of oldest sibling be (x+2) years
According to question,
x + (x+1) + (x+2) = 42
3x + 3 = 42
3x = 39
x = 13
Thus, the age of the oldest sibling is (x+ 2) years = 15 years old.
Learn more about Consecutive number from:
https://brainly.com/question/864749
#SPJ2
What is the opposite of 12?
NEED HELP FAST
Answer:
-12
Step-by-step explanation:
PLEASE HELP WILL GIVE BRAINLIEST ANSWER WHOLE PAGE PLEASE!!
Answer: A: 4.5 hours
B: No, she won't catch up.
C: 21 miles/hour
IMPORTANT: Please don't just copy the answers from the top and read all the sections down below! You can always learn something new.
Step-by-step explanation (SHOULD READ):
Hello! I hope this will help:
Hector = H
Wanda = W
------------------------------------------------------------------------------
Distance of race = 42miles
[tex]V_{H} = 12miles/hour\\D_{H} = 42miles-18miles=24miles\\V_{W} = 16miles/hour\\D_{W} = 42 miles[/tex]
Vh = Velocity of Hector
Dh = Hector's distance to travel
Vw = Velocity of Wanda
Dw = Wanda's distance to travel
----------------------------------------------------------------------------
Now, let's solve these exercises!
A.Write and solve an equation to find when Wanda will catch up to Hector.
The key words are the bolded words!
What do we have to find?
When Wanda..... Here we can see one thing: time
The word when indicates that we gotta find t (time).
catch up to Hector....
catch up indicates the fact that Wanda's position will be equal to Hector's position (Pos Hector = Pos Wanda)
And to Hector indicates position. Hector's position
So, at point A we gotta find the time that it would take for Wanda to catch up to Hector.
Wanda's speed (velocity) is greater (higher) than Hector's. Which means, after a definite amount of time, Wanda will catch up to him.
How to find the time it would take for Wanda to catch up to Hector?
Well, we gotta solve for time. We know their velocities, and their distance from eachother.
As we know, the formula for velocity is [tex]V=\frac{d}{t}[/tex]
That is Velocity = Distance divided by time.
We know: Distance, Velocity
So, we need to find the difference between our velocities. That way, we can know how faster you are than him, and in this case, Wanda than Hector.
Vwanda-Vhector = 16miles/hour-12miles/hour
The difference between their velocities is 4miles/hour.
That only means, that Wanda, every hour will walk 4 more miles, than Hector, because she's faster, obviously.
Velocity is 4miles/hour.
The distance will be the distance between the 2 children. That's 18 miles.
V = d/t
4miles/hour = 18miles/t
Let's calculate for t.
Multiply t on both sides.
4miles/hour * t = 18 miles * t / t
the time on the right side cancels out.
4 miles/hour * t = 18 miles.
divide 4 miles/hour on both sides.
4miles/hour * t / 4miles/hour = 18 miles / 4 miles/hour
the 4 miles/hour cancels out on the left side.
t = 18 miles / 4 miles/hour
the miles cancel out, remaining just the hour on the right side.
t = 18/4hours
t = 4.5 hours
If Wanda would travel for 4.5 hours, she will catch up to Hector!
And just like that, we solve A.
Let's move on B, shall we ?
B.The question is: Will Wanda catch up to Hector before the race is complete? Explain.
Pretty easy.
So, the question asks if Wanda has enough time to catch Hector, before he actually wins.
We know that Wanda's time to catch Hector = 4.5 hours.
What we need to do?
We need to calculate the time it will take Hector to finish the race, and then we'll go to the next step.
Hector's distance to finish the race = 42 miles - 18 miles = 24 miles.
Hector has to go 24 more miles to win.
His velocity is equal to 12 miles/hour.
V = d/t
12 miles/hour = 24 miles / t
multiply t on both sides, and the t on the right side will cancel out.
12 miles/hour * t = 24 miles * t / t
12 miles/hour * t = 24 miles
divide 12 miles/hour on both sides, and on the left side it will cancel out.
12 miles/hour * t / 12 miles/hour = 24 miles / 12 miles/hour
t = 24 miles / 12 miles/hour
The miles will cancel out, on the right side.
t = 24 / 12 hours
t = 2 hours
Now , to finish point B:
Her distance = 42 miles
Her velocity = 16 miles/hour
Time = Distance/Velocity
Her time = 42 miles / 16 miles/hour
the miles will cancel out on the right side
Her time = 42 / 16 hours
Her time = 2.625 hours to reach the finish.
Let's quickly display their times :
Hector : 2 hours
Wanda : 2.625 hours
Wanda did not have enough time to finish.
Hector finished the race in 2 hours, and Wanda in 2,6 hours (aproximately) .
C.Question: At what constant speed could Wanda travel to catch up with Hector at the finish line? Explain (boring)
At what velocity could Wanda travel at, to catch up Hector and win? That's the question.
Velocity of Hector = 12 miles/hour
Distance of Hector = 24 miles
Time of Hector = 2 hours
------------------------------------------------
Velocity of Wanda = ? (The enough velocity to pass Hector)
Distance of Wanda = 42 miles
Time of Wanda = ? (It isn't 2.6hours because if Wanda walks faster she would have a smaller time)
Wanda's time = Hector's time, because we want to get at the finish exactly when Hector is at it.
Wanda's time = 2 hours
V = d/t
V = 42/2
V = 21 miles/hour
Just like that.
If Wanda would travel on her bike with 21 miles/hour she would've cought up to her friend.
Hi again! I really hope I helped you and I hope I didn't make any mistake, altough I don't I did. Succes!
Find the surface area of the triangular prism.
I think it's 462.99, rounded it's 463
We have x tables and y chairs available for prom.
If we put 12 chairs at each table there will be 4 extra chairs with no table.
If we put 14 chairs at each table, one whole table will be empty and another will only have 6 chairs.
How many available tables and chairs do we have available for the prom.
Answer:
THE ANWSER IS 4
Step-by-step explanation:
Answer:
the answer is 4
Step-by-step explanation:
Some one pls help me this work is due in 39 minutes pls help me
Write two interges with different signs that have a sum of -25. Write two intergers with the same sign that have a sum of -25
Answer:
-5+-20=-25
5+-30=-25
Step-by-step explanation:
Riley goes to a store an buys an item that costs x dollars. She has a coupon for 10% off, and then a 8% tax is added to the discounted price. Write an expression in terms of x that represents the total amount that Riley paid at the register.
Answer:
0.972x
Step-by-step explanation:
x - 0.1x + 0.08(0.9x)
Converting percentages to decimals has you divide the percentage by 100.
So our first equation is full price minus a tenth of that price, leaves you with nine tenths, right? Then we multiply that nine tenths by 8 percent, which is 8 hundredths.
0.9x + 0.072x = 0.972x
A survey revealed that 20% of workers at a company were satisfied with their job. If 30 workers selected this option. How many total workers are at the company? Use the model below to help you solve the question.
Answer:
150 workers are at the company
Step-by-step explanation:
If 20% of the workers is equal to 30 workers than in order to find 100% of the worker you need to multiply the percentage with a number that makes it 100% and then multiply that number to the 30 workers so
20% * 5 = 100%
30 * 5 = 150
so 100% of the workers is equal to 150 workers
Adults and children attended the children's matinee on Saturday. Tickets for adults were $3 each, and tickets for children were $1 each. The theatre sold $114 worth of tickets. The function y = 114 - 3x represents the number of adult tickets x and childrens tickets y sold on Saturday. No links if I get links I’ll report you Juan will be sad<3
Answer:
just substitute 1, 2, 3, 4, and so on into the function and then you'll get your answer
Step-by-step explanation:
Please mark me brainliest
HELP PLEASE ILL GIVE BRAINLIEST
Answer:
8 books
Step-by-step explanation:
no.of books no.of weeks
2 3
x(say) 12
Now, using direct variation
[tex] \frac{2}{x} = \frac{3}{12} \\ \frac{2}{x} = \frac{1}{4} \\ x = 2 \times 4 \\ x = 8[/tex]