Step-by-step explanation:
We would apply the formula for exponential decay which is expressed as
A = P(1 - r/n)^ nt
Where
A represents the value after t years.
n represents the period for which the decrease in value is calculated
t represents the number of years.
P represents the value population.
r represents rate of decrease.
From the information given,
P = 23000
r = 8% = 8/100 = 0.08
n = 1
Therefore, the exponential decay function described in this situation is
A = 23000(1 - 0.08/n)1)^ 1 × t
A = 23000(0.92)^t
If A = 15000, then
15000 = 23000(0.92)^t
0.92^t = 15000/23000 = 0.6522
Taking log of both sides to base 10
Log 0.92^t = log 0.6522
tlog 0.92 = log 0.6522
- 0.036t = - 0.1856
t = - 0.1856/- 0.036
t = 5 years to the nearest year
I need help on 7 and 8!!!!!Find the diameter of each circle. Use a calculator’s value of Pi. Round your answer to the nearest tenth.
Answer:
37.6 in
48.2 yd
Step-by-step explanation:
The are of a circle is given as :
Area = pi(d²) /4
Area = 1110.4in²
1110.4 = 3. 14 * d² / 4
1110.4 * 4 = 3.14 * d²
4441.6 = 3.14d²
d² = 4441.6 /3.14
d² = 1413.8051
d = 37.600
d = 37.6
8.)
Area, A = 1824.7yd²
1824.7 = 3. 14 * d² / 4
1824.7 * 4 = 3.14d²
7298.8 = 3.14d²
d² = 7298.8 / 3.14
d² = 2323.2801
d = sqrt(2323.2801)
d = 48.200
Hence, diameter = 48.2 yd
A pair of sneakers cost $40 and there is a 30% markup rate. Find the selling price of the sneakers
Answer:
52 dollars
Step-by-step explanation:
40 times 1.3= 52
A store buys for 12$ each and marks up the price 25% what's is the price for a shirt at the store?
Answer:
$15
Step-by-step explanation:
25% of 12 is 3 so just add that to the original value
Answer:
$15
Step-by-step explanation:
Multiply the cost by the percentage mark up
12 × 25%
Convert the percentage into a decimal
12 × 0.25
3
Add the mark up to the original price
12 + 3
15
Edge users, Help! Will give brainliest
Answer:
You do not need to get right just get one wrong and it will say demo, then keep doing that.
Step-by-step explanation:
12y+15=24-6y ??????????????????
Answer:y=1/2
Step-by-step explanation:
Algebra 2!!
The equation of the piecewise function f(x) is below. What is the value of f(3)?
Answer:
5
Step-by-step explanation:
Ask your self which equation you should use. Since it says F(3) then we have to find an equation that would fit this correctly. For example if we look at -X^2, X<-2 we could see that 3 is clearly not less than -2, leading to the conclusion that this is not the right equation.. If you look at the last equation it says that x has to be greater/equal to 0 which is true. So then we are left with the equation...
F(3)=x+2
F(3)=3+2
F(3)=5
What is the measure of 2U?
4
4
70°
O A. 70
O B. 74
O C. Cannot be determined
O D. 66
Answer:
A. 70°
Step-by-step explanation:
Since, TV = TU = 4
[tex] \therefore \: m \angle \: U = m \angle \: V \\(by \: isosceles \: \triangle \: theorem) \\ \because \: m \angle \: V = 70 \degree\\ \\ \therefore \: m \angle \: U = 70 \degree[/tex]
Henry walked 3 miles and Sasha walked 12 miles.
Sasha says she walked 9 more miles than Henry.
Henry says that Sasha walked 3 times as many miles as he walked. Who is correct?
The shaded section of the strip diagram represents the percent of the number of students that get more than 9 hours of sleep each night. Of the students surveyed, 80 get more than 9 hours of sleep each night. How many students were surveyed?
Answer:
200
Step-by-step explanation:
each square=40
Slope intercept form of 4x+4y=-32
Answer:
y = - x - 8
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c
Given
4x + 4y = - 32 ( subtract 4x from both sides )
4y = - 4x - 32 ( divide all terms by 4 )
y = - x - 8 ← in slope- intercept form
Answer:
x+y=-8
Step-by-step explanation:
-32=4x+4y
-4y=4x+32
y=(4x+32)/-4
y=-x-8
x+y=-8
Now comparing to slope intercept form
y=mx+c,we get
slope =1
y intercept =1
y=-8
) Evaluate the expression for v = 2.
5v + 3 =
Answer:
13
Step-by-step explanation:
Evaluate the expression for v = 2.
First, plug in 2 wherever v is seen.
5v + 3
5(2) + 3
Next, multiply.
5(2) + 3
10 + 3
Add.
10 + 3
13
Your final answer is 13.
Please let me know if there are any issues with this answer.
Answer:
i think this is algebra
Step-by-step explanation:
The first thing you have to do is open the multiplication parenthesis to substitute V for 2
5v + 3
5 (2) + 3
Now that you have the parenthesis, you multiply and then the result that you add.
5(2) or 5x2= 10 but is better with parenthesis.
10 + 3
=3
I hope this helps.
Which are solutions of the equation (x+5)(x-3)=0
Answer:-5 and 3
Step-by-step explanation:-5 +5 is 0 and 0 times any number is 0 also 3-3 is 0 and 0 times any number is 0
Phil made a number line showing the multiples of 3/6...
What is the product 2 x 3/6?
the answer would be 6/6 because they want you to multiply 2 x 3/6
A Sea-doo rental agency charges $100 as a flat rate, and $50 for every hour rented. Complete a table of values for this scenario. Then, draw a graph of this scenario with appropriate labels.
Answer:
so if it was one hour it would be 100+50
2 hours= 100+100
3=100+ 150
and so on
Step-by-step explanation:
what is a circumference
Answer:
25.13
Step-by-step explanation:
2 pie multiply radius
2 pie multiply 4
( I think so)
I hope this helps
The quadrilateral shown is a parallelogram. What is m<B?
A) 25°
B)55
C) 65
D) 115 degree
The answer is D. 115°
Answer:
The answer is also 115 on USA test prep.
Kelvin ordered four pizzas for a birthday party. The pizzas were cut into eighths. How many slices were there? (Draw a picture to support your response; please)
Answer:
32 slices are there thankyou
Cece is finding the surface area of a square pyramid by finding the sum of the areas of its faces. Which statement best describes the faces of the pyramid?
A)one square and three triangles
B)one square and four triangles
C)three squares and one triangle
D)three squares and two triangles
Answer:
D. One square and four triangles
Step-by-step explanation:
Cece is finding the surface area of a square pyramid by finding the sum of the areas of its faces
Square pyramid has a square base.
each edge of the square base joins at the top of the vertex to make a pyramid
The sides of the pyramid is a triangle
the square has 4 sides, so four triangle on the sides of the pyramid
Hence one square and four triangles forms a square pyramid
Answer:
The answer is A). one square and three triangles
Step-by-step explanation:
If i'm incorrect pleas let me know.
Can you guys help me plz
Answer:
Step-by-step explanation:
The scale factor is 2
A frequency distribution is a way to describe categorical data categorically.
O A. True
O B. False
Answer:
Its true
Step-by-step explanation:
make sure too look at the question you have and if its the same one, so if my answer was wrong for you then its because ur question was different from this one.
original price is $150 markdown is 30% what is the retail price
Answer:
$105
Step-by-step explanation:
0.30×150=45
150-45=105
40 tickets were sold for a concert, some at 75 cents and the rest at $1.25. if the total raised was $42, how many had the cheaper ticket. please i need this for an assignment
Answer:
34
Step-by-step explanation:
$1.25 = 125 cents.
$42 = 4200 cents
Tickets sold at 75 cents = x
Tickets sold at 125 cents = y
x + y = 40
75x + 125y = 4200
Multiply the first equation by 75
75x + 75y = 3000
75x + 125y = 4200
Subtract the the second equation from the first.
75x + 75y = 3000
- 75x + 125y = 4200
-------------------------------
0 - 150y = - 1200
Divide both sides by - 150
-150y/-150 = -1200/-150
y = 8
Substitute y = 8 into the first equation
x + y = 42
x + 8 = 42
x = 42 - 8
x = 34
34 tickets were sold for 75 cents
8 tickets were sold for $1.25
Which graph represents the inequality?
n < -2
Graph A
Graph B
Graph C
Graph D
Question 25. A segment of a circle is the portion formed by the sector and 4 points
a triangle,
True
O False
Answer:
It is false
Step-by-step explanation:
Rahim bought a car for ₹ 4, 35,000, spent ₹ 55,000 on repairs and sold it for ₹ 5, 50,000. What is his profit?
Please answer and thank you
Introduction please
Answer:
Hello! I am a Percy Jackson fan.
60,000
Step-by-step explanation:
This is because 435000 + 55000 = 490000.
Then, subtract that from 550000.
What's the answer...I'm kinda lost
Answer:
it would be D
Step-by-step explanation:
because you are reflecting the shape across the x axis
please help fast
8 Rotate the point (-3,-4) around the origin 180 degrees. State the image of the point.
A (-4,-3)
B (-4,3)
C (4, -3)
D (3, 4)
Answer: D (3,4) trust and believe
brainlyst pls I think I spelt is wrong
Step-by-step explanation:
When a line or shape or point is rotated, it must be rotated around a point.
The image of the point is D. (3,4)
The point is given as:
[tex]\mathbf{(x,y) = (-3,-4)}[/tex]
A 180-degree rotation across the origin is represented as:
[tex]\mathbf{(x,y) \to (-x,-y)}[/tex]
Substitute values for the coordinates of the point (x,y)
[tex]\mathbf{(-3,-4) \to (-(-3),-(-4))}[/tex]
Simplify
[tex]\mathbf{(-3,-4) \to (3,4)}[/tex]
Hence, the image of the point is D. (3,4)
Read more about rotations at:
https://brainly.com/question/15356082
Answer for ( brain list, thanks, 5 star review)
Answer:
Your answer is 4.99
Step-by-step explanation:
259.48/52 will take some work if you use long division, but eventually you get your answer of 4.99
How many buckets have one full gallon of water?
Answer:
four just count the circles above the one
A shirt that normally costs $19.99 is on sale for 15% off. How much does the shirt cost after the discount? $22.99 $19.99 $16.99 $24.50
Answer:
C. $16.99
Step-by-step explanation:
The shirt cost after the discount will be $16.99. thus option C is correct.
How to calculate the third party discounts?Third party discount is the multiplication result of the maturity value of the original rate to the rate of interest and time period.
Thus, we get:
Third party discount = Maturity value × R × T (R in decimal form).
We have been given that a shirt that normally costs $19.99 is on sale for 15% off. we are asked to find the discount on the shirt.
Therefore,
19.99 x 15/100
19.99 x 0.15 = 2.99
Then subtract from the total amount;
19.99 - 2.99 = 16.99
Therefore, the shirt cost after the discount will be $16.99. thus option C is correct.
Learn more about proceeds here:
https://brainly.com/question/27470570
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