Answer:
After eight hours 6,561 people will know the rumor.
Step-by-step explanation:
Since each hour, every person who knows a rumor tells two other people, so that if one person starts the rumor, then after the first hour, three people know the rumor, and the next hour, those three people each tell two more people, to determine after eight hours, how many people will know the rumor, the following calculation must be performed:
Hour 0 = 1
Hour 1 = 1 + 2 = 3
Hour 2 = 3 + 2 x 3 = 9
Hour 3 = 9 + 2 x 9 = 27
Hour 4 = 27 + 2 x 27 = 81
Hour 5 = 81 + 2 x 81 = 243
Hour 6 = 243 + 2 x 243 = 729
Hour 7 = 729 + 2 x 729 = 2,187
Hour 8 = 2,187 + 2 x 2,187 = 6,561
Therefore, after eight hours 6,561 people will know the rumor.
could someone help me please? 13 points!!
Answer:
0.13
Step-by-step explanation:
it's not that hard all you have to do is add the shaded blocks, then make it a decimal
Answer:
Your answer would be 13%.
Step-by-step explanation:
Their is 100 squares and 13 squares are
shaded therefore it would be 13%.
Hope this helps!
A survey of 11 students showed that 8 liked science, 7 liked mathematics, and 4 liked both. How many students just liked science
Answer:
4 I guess..........not sure but my answer is 4
You need to know how far you are away from the lighthouse.
You use a range finder to find the distance from the sailboat to the lighthouse light is 245 yards.
For angle B, chose an angle measure between 25° and 45°: __________
Based on the above information, find the distance from the sailboat to the island where the lighthouse is located.
Answer:
The distance from the sailboat to the island where the lighthouse is located is approximately 212.2 yards
Step-by-step explanation:
The distance between the sailboat and the lighthouse is found using trigonometric ratios as follows;
The given parameters are;
The distance from the sailboat to the lighthouse's light = 245 yards
The angle of elevation of angle B = An angle chosen between 25° and 45°
For simplicity, we chose, B = 30°
A right triangle formed with the height of the light house and the horizontal distance of the sailboat from the lighthouse as legs and angle B is the angle adjacent to the horizontal distance of sailboat from the light house
The hypotenuse length = The distance from the sailboat to the lighthouse's light = 245 yards
By trigonometric ratio, in the we have;
[tex]cos\angle B = \dfrac{Adjacent\ leg \ length}{Hypotenuse \ length}[/tex]
The adjacent leg length = The horizontal distance of sailboat from the light house
[tex]\therefore cos (30^{\circ}) = \dfrac{The \ horizontal \ distance \ between \ the \ sailboat \ and \ the \ lighthouse }{245 \ yards}[/tex]
The horizontal distance between the sailboat and the light house = 245 × cos(30°) ≈ 212.176223927
Therefore;
The horizontal distance between the sailboat and the lighthouse ≈ 212.2 yards
Therefore, the distance from the sailboat to the island where the lighthouse is located ≈ 212.2 yards.
x/12-5>-2 please help
Answer:
Your math problem
1
2
−
5
>
−
2
can i get brainliest plz :)
Use a net to find the surface Area of the square pyramid The height of the pyramid is 9 yes and the base sides are all 2.5 yrds and its a square as a base
Answer:
[tex]Area = 51.68yd^2[/tex]
Step-by-step explanation:
Given
[tex]h = 9yd[/tex] -- height
[tex]a = 2.5yd[/tex] --- base sides
Required
Determine the surface area
The net is not given. So, I will solve directly.
The surface area is calculated as:
[tex]Area = a^2 + 2a\sqrt{\frac{a^2}{4} + h^2}[/tex]
So, we have:
[tex]Area = 2.5^2 + 2*2.5\sqrt{\frac{2.5^2}{4} + 9^2}[/tex]
[tex]Area = 6.25 + 5\sqrt{\frac{6.25}{4} + 81}[/tex]
[tex]Area = 6.25 + 5\sqrt{1.5625 + 81}[/tex]
[tex]Area = 6.25 + 5\sqrt{82.5625}[/tex]
[tex]Area = 6.25 + 5* 9.086[/tex]
[tex]Area = 51.68yd^2[/tex]
someone help me with this
Answer:
C
Step-by-step explanation:
the middle line is the median you can see that they are the same
1. Find the area of the figure above in square inches
2. Find the perimeter of the figure above in inches
Pleaasseee helppppp.
Answer:
180+12x
Step-by-step explanation:
The equation A= 1750(1.04)t represents an account balance t years after the account was created. Which statement is correct?
A. The account balance will decrease 0.04% each year.
B. The account balance will increase 0.04% each year.
C. The account balance will decrease 4% each year.
D. The account balance will increase 4% each year.
Answer:
D. The account balance will increase 4% each year.
Step-by-step explanation:
Given the equation :
A= 1750(1.04)t
This is an exponential growth rate equation which has it's general format as :
A = A0 * (1 + r)^t
A0 = initial value,
Since (1 + r) is greater Than 1 ; then we conclude that it is a growth relation.
1 + r = 1.04
The rate, r = (1.04 - 1) = 0.04
r = 0.04 = (0.04 * 100%) = 4%
Hence, The account balance will increase 4% each year.
f(x)= 3x - 5x + 2x – 3
Find the value of a. 19 km 19 km Perimeter = 57 kilometers
Answer:
19km
Step-by-step explanation:
The formula for the perimeter of a triangle is: S+S+S.
So;
19km+19km+a=57km
a=57km-19km-19km
=19km
Could someone please give the answer to this question.?
Answer:
25
Step-by-step explanation:
v^2 - 10v + __ : what number when added to itself gives you -10 ? -5
what's -5 x -5 ? 25
(v-5)^2 is a perfect square
2/x-2+15/x=2/x-2 what is the LCD
Answer:
im not sure
Step-by-step explanation:
hy
Answer:
what butt to not answer
Step-by-step explanation:
I'LL GIVE BRAINLIEST PLEASE ANSWER ALL FOUR PLEASE
Answer:
i would need to see all four to be able to answer ?
Step-by-step explanation:
HELPPPPPPPPPPPP MEHHHHHHHHHHHHHHHHHHHHHHHHH PLZZZZZZZZZZZZZZZZ GRADES GO OUT TOMMORROW AND I NEED THIS SO I CAN GET MY GRADE UP FROM A D+ PLZZZZZZZZ MY PARENTS WILL MURDER ME
Answer:
6.48
Step-by-step explanation:
17*-.36= -6.12
-6.12+12.6= 6.48
Harrison started a part-time job in order to pay for his gas to get to school and work. His job pays $9.50 per hour. His school has a rule that states that students cannot work more than 15 hours per week. He needs to earn at least $28.50 per week to pay for his gas. A. Write a function f(h) describing how much he will earn as a function of h hours worked. B. Based on the parameters described in the problem, what are the domain and range of the function rounded to the hundredth
f (15) = $142.50
i hope this help you!
We know that:
Harrison gets $9.50 per hour of work.
He can work a maximum of 15 hours per week.
He needs to earn a minimum of $28.50 per week.
A) We want a function f(h) that tells how much he wins in a week if he works h hours.
So we know that he gets $9.50 per hour of work, then if he works h hours, he gets h times $9.50, then we can just write:
f(h) = $9.50×h
B) First remember that the domain is the set of possible values of h, and the range is the set of possible values of f(h).
We know that the maximum value of h is 15, to find the minimum value of h we need to use the other restriction, that he needs to win at least $28.50, then we need to solve:
$9.50×h = $28.50
h = ($28.50)/($9.50) = 3
Then we can conclude that the domain is:
D = [3, 15]
To find the range, we just need to evaluate the function in the minimum and maximum values of the domain:
f(3) = $28.50
f(15) = $142.50
Then the range is:
R = [$28.50, $142.50]
If you want to learn more, you can read:
https://brainly.com/question/9446123
What is the volume, in cubic centimeters, of a rectangular prism with a height of 7 centimeters, a width of 6 centimeters, and a length of 14 centimeters?
Answer:
588
Step-by-step explanation:
multiply length x width x height 7×6×14
Step-by-step explanation:
multiply 7,6,14
=588
therefore the answer in cubic centimeters is= 588
How can you compare two rates graphically?
Answer:
Step-by-step explanation:
In Quadrants I and III, a larger rate has a steeper slope; for example, the line that climbs faster has the steeper slope.
please help
will mark brainlist
Answer:
(-2, 4)
Step-by-step explanation:
Reflection over the x-axis would mean the point would flip upwards, this would affect the y coordinate.
What is i^34?
A. -1
B. -i
C. 1
D. 1
Answer:
A.-1 all you had to do was look up the answer
Step-by-step explanation:
Which of these expressions would be the best estimate of the quotient 15 1/2 ÷ 3 2/3?
A. 15÷3
B. 15÷4
C. 16÷3
D. 16÷4
Answer:
D
Step-by-step explanation:
Because 15 1/2 ÷ 3 2/3 equals 4.22727272727 and 15 divided by 3 is 5, 15 divided b 4 = 3.75 16 divided by 3 is 5.33333333333 and 16 divided by 4 equals 4 so thats the closest answer
Hope this helps
7) Usain Bolt is almost 7 foot tall. What is this height (approximately) in meters?
Answer:
since 7 feet is 2.1336
aproximatly would be 2.08 rounded 2 meters
Step-by-step explanation:
Fred bought 4 liters of liquid laundry detergent, 3,260 milliliters of fabric softener, and 2.5 liters of bleach. Select true or false for each statement. Fred bought 76 milliliters more fabric softener than bleach. False Fred bought 1.75 liters more laundry detergent than bleach. False Fred bought 760 milliliters more fabric softener than bleach. False Fred bought 150 milliliters more laundry detergent than bleach. ? Fred bought 0.76 liters more fabric softener than bleach.
Answer:
Step-by-step explanation:
Fred bought 4 liters of liquid laundry detergent, 3,260 milliliters of fabric softener, and 2.5 liters of bleach.
We carry out conversion
Select true or false for each statement. Fred bought 76 milliliters more fabric softener than bleach. False Fred bought 1.75 liters more laundry detergent than bleach. False Fred bought 760 milliliters more fabric softener than bleach. False Fred bought 150 milliliters more laundry detergent than bleach. ? Fred bought 0.76 liters more fabric softener than bleach.
Branliest For Correct answer
Please I need help
Factor Completely
a^2 - a - 20
Answer:
[tex]\left(a+4\right)\left(a-5\right)[/tex]
Step-by-step explanation:
Break the expression into groups.
=(a^2+4a)+(−5a−20)
Factor out a from a2+4a: a(a+4)
Factor out −5 from −5a−20: −5(a+4)
=a(a+4)−5(a+4)
15/16 as a decimal rounded to the nearest tenth
Answer:
0.9
Step-by-step explanation:
[tex]\frac{15}{16}=0.9375\approx0.9[/tex]
Find the slope and y intercept
Shanice's school is selling tickets to a play. on the first day of ticket sales the school sold 11 adult tickets and 6 student tickets for a total of $154. The school took in $145 on the second day by selling 3 adult tickets and 11 student tickets. find the price of a student ticket.
Answer:
$319
Step-by-step explanation:
add the money and then what u get for the money add it to the other numbers u have.
Could someone give me a hand?
Answer:
30
Step-by-step explanation:
Look at the image I attached for reference as I explain. (I only labeled the angles that are relevant to the problem)
These triangles are congruent, as shown by the first equation.
When triangles are congruent, it means that the sides and angles are the same.
We can see that angles ∠ABC and ∠DEC are corresponding, which means that they have the same value.
We don't know ∠DEC, but we have two angles in that triangle that we do know. Since the angles in a triangle add up to 180, we have this equation:
180-65-55=∠DEC
60 = ∠DEC
So now we know that ∠DEC is 60 degrees.
Since ∠ABC and ∠DEC are equal:
2x=60.
Divide both sides by 2, and we get x =30.
NEED HELP ASAP (will give 10 points)
Answer:
Overuse of natural resources would not be a benefit, since it isn't a good to overuse something
1. is a hanger a/an right,acute, or obtuse triangle?
2. is it a/an equilateral, scalene or isosceles triangle? please put an explanation for both, thanks :)
Answer:
1. acute 2. isosceles
Step-by-step explanation:
1. Acute means less then a 90 degree angle a hanger has a degree of about 60.
2. isosceles means it has 2 sides the same length a hanger has 2 sides the same length.