There are two twins. One twin wants to explore the planet near Proxima Centauri and leaves on a spaceship traveling at 90% of the speed of light, while the other twin stays home on Earth. How much does the twin on Earth age while the other twin travels to Proxima Centauri?
Answer:
4.7 years
Step-by-step explanation:
Distance of planet from Earth = 1.3 parsec
We know that 1 parsec = 3.26 light years
And a light year is the distance traveled by light in time period of 1 year.
So, Distance of planet from Earth = 1.3 [tex]\times[/tex] 3.26 = 4.24 light years
Given that, the person travels at a speed equal to 90% of the light speed.
To travel to the planet from Earth, Light takes 4.24 years.
To travel the distance [tex]D[/tex], at a speed [tex]s[/tex] light takes time of 4.24 years.
To travel the distance [tex]D[/tex], at a speed [tex]0.90s[/tex], the person takes time:
[tex]\dfrac{4.24}{0.90} = \bold{4.7\ years}[/tex]
So, the twin on Earth ages by 4.7 years.
Answer:
4.7 years
Step-by-step explanation:
Which equation represents exponential decay? A. y=100 (31)
B. y = To (3.1)
c. y = 10(0.13)
D. y = 100(1.03)
HURRY I AM DOING MAP TESTING
Answer:
C
Step-by-step explanation:
Algebra, help please ASAP
Answer:
GCF
I hope this helps!
Answer:
GCF
Step-by-step explanation:
the sum of two numbers is -18. if the first number is 10 which equation represents this situation and what is the second number?
help plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss
Answer:
Step-by-step explanation:
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a counselor charges a client $110 for 4 hours of therapy. how much does the counselor earn per hour
HELP ME PLEASE!!!!!!!!!
Jill babysat for 7 1/2 hours and earned $63.75. How much money does she earn per hour?
Answer:
$8.50 per hour
Step-by-step explanation:
63.75 / 7.5 = 8.5
Would the answer to this be 6 or 4?
Answer:
6 or -1
Step-by-step explanation:
6=a^2-5a
=a^2-5a-6
(a-6)(a+1)
a=6, -1
The temperature in Coldspot is -7o F and increasing 2.5o per hour. The temperature in Frostberg is 19 degrees F and decreasing 4 degrees per hour.
a. How long will it be until the temperatures are the same?
b. What will the temperature be then?
Answer:
It will take 4 hours for the temperatures to be the same. The temperature will be 3° at that time.
Step-by-step explanation:
Coldspot = -7 + 2.5x
Frostberg = 19 - 4x
First, we are going to input our values into the variable in a table.
Coldspot Frostberg
1 -7 + 2.5(1) = -4.5 19 - 4(1) = 15
2 -7 + 2.5(2) = -2 19 - 4(2) = 11
3 -7 + 2.5(3) = 0.5 19 - 4(3) = 7
4 -7 + 2.5(4) = 3 19 - 4(4) = 3
It will take 4 hours for the temperatures to be the same. The temperature will be 3° at that time.
Hope this Helps! :)
Have any questions? Ask below in the comments and I will try my best to answer.
-SGO
Answer:
4 hours
Step-by-step explanation:
simplifying radicals pt.3 please help ASAP and explain if possible
Answer: It would be the first option. 15√6
Step-by-step explanation:
5√3 = 5x3=15
√18= √9x2
√9=3
√3x2= √6
15√6
Help me please! Will mark Brainliest! <3
Answer:
助けはないが私をマークする
Step-by-step explanation:
Answer:
(0,0) is the origin therefore $0 per hour
(1,125) means that in 1 hour the company rents rafts for $125 per hour
Consider the triangle.
Triangle A B C is shown. Side A B has a length of 22, side B C has a length of 16, and side C A has a length of 12.
Which shows the order of the angles from smallest to largest?
angle A, angle B, angle C
angle B, angle A, angle C
angle B, angle C, angle A
angle C, angle A, angle B
Answer:
It's B for edge 2020
Step-by-step explanation:
The order of the angles from smallest to largest is angle B, angle A, angle C and is denoted as option B.
What is a Triangle?This is referred to a polygon which has three edges and vertices with its longest side being the hypotenuse.
The angle facing the largest side(AB) is always the largest which in this case is angle C, the medium side is side BC which has a length of 16 with the angle facing it as A which is why it is the second largest.
Read more about Triangle here https://brainly.com/question/1058720
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Jeremy is saving $250 per month for his vacation . How much will Jeremy save up for his vacation in 1 year and 6 months?
Answer:
The expression shows the number of dollars he will have saved by the end of the year is given by 35(7)+40(5)=\$44535(7)+40(5)=$445
Step-by-step explanation:
Since we have given that
Amount he saved per month over the first 7 months = $35
Amount he saved per month over the next 5 months = $40
So, total saving by the end of the year is given by
\begin{gathered}35\times 7+40\times 5\\\\=\$245+\$200\\\\=\$445\end{gathered}
35×7+40×5
=$245+$200
=$445
Hence, the expression shows the number of dollars he will have saved by the end of the year is given by
35(7)+40(5)=\$44535(7)+40(5)=$445
answerrrr please . thanks xoxo
y-2>11
Answer:
y >13
Step-by-step explanation:
y - 2 > 11
solve like how you would solve an equation, with inverse operations
y -2 > 11
+2 +2
y > 13
Answer:
it shoud just be y>13
Step-by-step explanation:
bc you add 2 to each side which cancels the -2 on the left and makes the 11 on the right 13
A deluxe bakery sells a cookie for $2.38, a brownie for $3.07 and a cake for $14.87. On Wednesday they sold 13 cookies, 4 brownies and 4 cakes. The cost in ingredients for each cookie is $1.7, for each brownie is $1.91 and for each cake is $5.83. How much profit did they make on Wednesday?
Answer:
$ 49.64
Step-by-step explanation:
Selling price of cookie on Wednesday = 13 × 2.38 = $30.94
Selling price for brownie on Wednesday = 4 × 3.07 = $ 12.28
Selling price for cakes on Wednesday = 4 × 14.87 = $ 59.48
Cost price for cookie = 13 × 1.7 = $ 22.1
Cost price for brownie = 4 × 1.91 = $ 7.64
Cost price for cakes = 4 × 5.83 =$ 23.32
Total profit for Wednesday= Total selling price - total cost price
That is;
(30.94 + 12.28 + 59.48) - (22.1 + 7.64 +23.32) = $ 49.64
EMERGENCY! PLEASE ANSWER ASAP!
Answer:
Its the second one
Step-by-step explanation:
Pls help
Solve 2/3x- 1/5>1
Answer:
x > 9/5
Step-by-step explanation:
Step 1: Write inequality
2/3x - 1/5 > 1
Step 2: Solve for x
Add 1/5 to both sides: 2/3x > 6/5Divide both sides by 2/3: x > 9/5Here we see that any x value greater than 9/5 will work.
solveeee pleaseeee . thanks xoxo
t-4>-7
Answer:
t>-3 is the answer. hope this helped!
Step-by-step explanation:
Its simple you add 4 to both sides. t-4+4 > -7+4= t > -3
What does (+7)-(-3) equal
Answer:
10
Step-by-step explanation:
7−(−3)
=7−(−3)
=7+3
=10
Answer:
10
Step-by-step explanation: calculator
A. It has reflectional symmetry with one line of symmetry.
B. It has rotational symmetry with an angle of rotation of 120°.
C. It has no reflectional symmetry.
D. It has rotational symmetry with an angle of rotation of 60°.
NEED HELP!
write the lengths in order from greatest to least
12.7 ( 12 7/10) 12 3/5 12 3/4
WHAT DO I DO NEXT!!!!!!!!!!
Names
Item 1
Price
Item 2
Price
Item 3
Price
Subtotal
Tip
Total Bill
Your name
My sister
Kids meal and chicken tenders
4.99
burger
3.99
Drink
small
2.50
49.77
3
50.00
Friend #1
family
Kids meal
4.99
Cheese burger
2.99
Drink
small
1.99
29.69
10
30.00
Friend #2
me
burger
2.30
fries
2.99
Coffe
mocha
2.00
13.75
20
14.00
Friend #3
Family and family
Burger with stuff in side
4.99
Burger with stuff in side
4.99
Two drinks for two people.
9.00
18.99
20
c
Part 2: Questions
Answer the following questions, showing all work:
What is the total cost of the entire bill (all four meals), including tip?
50 + 30+ 14 + 19 = 113
Write an expression using fractions to show how to determine the amount that each person will pay. Then calculate each person's contributions showing all steps in long division.
113
If you just multiply 4.99 by 3.99 by 2.50 you would get 49.77 thats just an example.
If each person paid an equal amount, who would save the most money? Explain your reasoning using at least two complete sentences.
There is no answer you did everything? :/
Answer:
what ????
Step-by-step explanation:
help please this for algebra 1
Answer:
D. 1/3
Step-by-step explanation:
When you add 1/3 and 6 you get 6 1/3 so yeah
If you deposit $5000 at the end of each year for 30 years using an annual interest rate of 9% compounded annually, how much money will you have after 30 years?
What's the value of r (common ratio)
7, 21, 63, 189, ......
11)
A. 3
B. -3
C.
32
D.
Neither
Answer:
[tex]3[/tex]
Step-by-step explanation:
[tex]the \: common \: ratio \: is \: 3 \\ i.e \: \frac{21}{7} = \frac{63}{21} = \frac{189}{63} = 3[/tex]
The answer is A
I already wrote the steps and explanation in the image
Sorry for my broken English QAQ
If the length of a rectangle in terms of x is x2 + 2x + 5, and its width is 2x + 3, what is the perimeter of this rectangle?
Answer:
6x
Step-by-step explanation:
Perimeter of rectangle is [tex]2x^{2} +8x+16[/tex].
What is perimeter of rectangle?The perimeter of a two-dimensional shape is the total length of the outline. To find the perimeter of a rectangle, we add the lengths of all four sides.
Given
Length of a rectangle in terms of x = [tex]x^{2} +2x+5[/tex]
Width of a rectangle in terms of x = [tex]2x+3[/tex]
Perimeter of rectangle = 2(length + width)
P = [tex]2(x^{2} +2x+5 + 2x+3)[/tex]
P = [tex]2(x^{2} +4x+8)[/tex]
P = [tex]2(x^{2} )+2(4x)+2(8)[/tex]
P = [tex]2x^{2} +8x+16[/tex]
Hence, Perimeter of rectangle is [tex]2x^{2} +8x+16[/tex].
Find out more information about perimeter of rectangle here
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what is the approximate volume of the cone? use 3.14 for p? help immediately
Answer:
V=157
Step-by-step explanation:
Formula-
V=π[tex]r^{2}[/tex][tex]\frac{h}{3}[/tex]
1.) Place height and radius in the formula.
V=π[tex]5^{2}[/tex][tex]\frac{6}{3}[/tex]
2.) Now all you have to do is simplify.
V=3.14 x 25 x 2
3.) Now solve.
V=157.07963
Answer:
I say 157 cubic centimeters
Step-by-step explanation:
Charlotte is working two summer jobs, making $18 per hour lifeguarding and making $6 per hour walking dogs. In a given week, she can work at most 15 total hours and must earn a minimum of $150. If Charlotte worked 5 hours walking dogs, determine the minimum number of whole hours lifeguarding that she must work to meet her requirements. If there are no possible solutions, submit an empty answer.
Answer:
the answer is 6.6 or at estimation 7Answer:7
Step-by-step explanation:
How do equations or inequalities help us understand how to interpret whether a solution is possible for a particular real world situation