He altitude of a triangle is increasing at a rate of 3000 centimeters/minute while the area of the triangle is increasing at a rate of 3500 square centimeters/minute. at what rate is the base of the triangle changing when the altitude is 10000 centimeters and the area is 89000 square centimeters?

Answers

Answer 1
By definition, the area of a triangle is given by:
 A = (1/2) * (b) * (h)
 Where,
 b: base of the triangle
 h: height of the triangle
 Deriving the area we have:
 A '= (1/2) * ((b') * (h) + (b) * (h '))
 Clearing b' we have:
 b '= (2A' - (b) * (h ')) / (h)
 We must look for the value of the base:
 A = (1/2) * (b) * (h)
 Substituting values:
 89000 = (1/2) * (b) * (10000)
 b = (89000) / (5000)
 b = 17.8 cm
 Then, the speed at which the base changes is:
 b '= (2 * (3500) - (17.8) * (3000)) / (10000)
 b '= -4.64 cm / min
 Answer:
 
The base of the triangle is decreasing at:
 
4.64 cm / min

Related Questions

A data set consists of the following data points:(3, 5), (5, 8), (6, 13)The line of best fit has the equation y = 2.5x – 3. What does this equation predict for a value of x = 3?

Answers

For this case we have the following equation:
 y = 2.5x - 3
 For x = 3 we have:
 y = 2.5 (3) - 3.
 Rewriting:
 y = 7.5 - 3.
 y = 4.5
 Therefore, the ordered pair that predicts the line is:
 (x, y) = (3, 4.5)
 Answer:
 
this equation predict for a value of x = 3:
 
(x, y) = (3, 4.5)

Write the equation of a circle, given the center is at point a(4,6) and the radius = 3.

Answers

Use:
[tex](x - a)^{2} + (y - b)^{2} = r^{2} [/tex]
Answer:
[tex](x - 4)^{2} + (y - 6)^{2} = 9[/tex]

Simplify 11/12 - 6/4

Answers

Hello there, and thank you for asking your question here on brainly.

Short answer: -7/12

Why?

So, here are the steps on how to solve this. It takes a bit of work. (First step: 6/4 can be simplified down to 3/2, so do that.) - (Second step: Find the least common denominator. The least common denominator is 12. Convert 3/2 to a 12 denominator by multiplying both sides by 6. {3 * 6} / {2 * 6} ==> 18/12) - (Third step: Subtract the numerators. {11}/12 - {18}/12 ==> -7/12

Hope this helped you! ♥

What is the equation of the line that passes through the points (0, -4) and (2, 8)?

A. y = 6x - 4
B. y = 6x + 4
C. y = 4x + 6
D. y = -4x + 6

Answers

Option A is your answer, y = 6x - 4.

m = Y₂ - Y₁ / X₂ - X₁

m = 8 -  (- 4) / 2 - 0
m = 12 / 2
m = 6

So now your equation is y = 6x + b. This eliminates options C and D. Plug in any of your ordered pairs to find b. I picked the first one. 

- 4 = 6(0) + b
- 4 = 0 + b
- 4 = b

Your equation is y = 6x - 4. 

A rectangular plot of land that contains 1500 square meters will be fenced and divided into two equal portions by an additional fence parallel to two sides. find the dimensions of the land that require the least amount of fencing.

Answers

Let x = the length of the rectangle
Let w= the width

Two sections are required, hence 2w of fence required
2x+3w=500

this can be written as:
3w=1500-2x
w=(1500-2x)/3

Area=x*w
replacing w with our expression:
A=x(1500-2x)/3
A=(500x-2x^2)/3

This is a quadratic equation, if we find the axis of symmetry we will know what value of x gives maximum area:
Axis of symmetry: x=-b/2a
From our equation we get:
a=-2/3; b=1500/3
thus
x=(1500/3)/(-(-2/3))
x=750
thus the maximum area will be given by length of 750

What is the solution to the linear equation ? 2/5+p=4/5+3/5p

Answers

2/5 + p = 4/5 + 3/5 pSimplifyp + 2/5 = 3/5 p + 4/5Subtract 3/5p from both sidesp + 2/5 -3/5p = 3/5p + 4/5 -3/5 p2/5 p + 2/5 =4/5Subtract 2/5 from both sides2/5 p +2/5 -2/5 = 4/5 -2/52/5 p = 2/5Divide both sides by 2/52/5 p / 2/5 = 2/5 /2/5p = 1

Answer:

p=1

Step-by-step explanation:

2/5+p=4/5+3/5p

[tex]\frac{2}{5} +p= \frac{4}{5} +\frac{3}{5} p[/tex]

p or p/1 are same

LCD is 5, multiply 5 with each term. the equation becomes

[tex]\frac{2}{5} \cdot 5+p \cdot 5= \frac{4}{5} \cdot 5 +\frac{3}{5}p \cdot 5[/tex]

[tex]2+5p = 4 +3p[/tex]

Subtract 3p from both sides

[tex]2+2p = 4[/tex]

Subtract 2 on both sides

[tex]2p= 2[/tex]

Divide by 2 on both sides

p= 1

So the value of p =1  for the given equation

You wish to invest $500. You are going to earn 5% simple interest. How much interest will you earn?

Answers

You would earn .05 x $500 or $25 over that time period.

Answer:You would earn .05 x $500 or $25 over that time period.

Step-by-step explanation:

Assuming a truck container holds 24 cases, how many cases would 6 truck containers hold?

Answers

6 trucks will hold 144 containers.
multiply 6 by 24

Answer:

6 truck containers can hold 144 cases

Step-by-step explanation:

A truck container holds 24 cases and we have to find number of cases would 6 truck container will hold.

We will solve this question by unitary method.

∵ One truck container holds cases = 24

∴ 6 truck containers will hold cases = 24×6 = 144

Therefore 144 cases is the answer.

Sam is driving from Chicago to San Francisco, a distance of 2220 miles. He covers the first 192 miles in 4 hrs. At this rate, how long will the entire trip take?

Answers

We can set it up like this:

[tex] \frac{192}{4} = \frac{2220}{x} [/tex]

This states that Sam can drive 192 miles in 4 hours and 2220 miles in x hours.  To solve, we can use cross-multiplication:

[tex]192x = 2220*4 \\ 192x = 8880 \\ x = \frac{8880}{192} \\ x = 46.25[/tex]

It will take Sam 46.25 hours to drive the whole trip, or 46 hours and 15 minutes.

Which expressions are equivalent to the one below? Check all that apply.

21^x/7x

A. 3^x-7

B. 3

C. 3^x

D. (21-7)^x

E. 7^x * 3^x/ 7^x

F. (21/7)^x

Answers

Final answer:

After simplifying the original expression, the equivalent expressions to  [tex]21^x/7x[/tex] are C.  [tex]3^x[/tex] and F. [tex](21/7)^x.[/tex]

Explanation:

The original expression in the question is  [tex]21^x/7x[/tex]. To find equivalent expressions, we first simplify the original expression. The expression  [tex]21^x[/tex]is the same as [tex](7*3)^x,[/tex] which, by property of exponents, can be written as  [tex]7^x * 3^x.[/tex]Then, given the expression is divided by 7x, the x in the denominator cancels out with the x from [tex]7^x.[/tex] Hence, the simplified form will be  [tex]3^x.[/tex] Now, we compare it with the given options.

Option C is directly equal to the simplified form. While options A,D, E, and B are not equivalent to the original expression. Considering option F, 21/7 simplifies to 3 and so, [tex](21/7)^x[/tex] can be rewritten as  [tex]3^x[/tex] which is equal to the simplified form. Therefore, the equivalent expressions are C. [tex]3^x[/tex]and F.  [tex](21/7)^x.[/tex]

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Final answer:

The equivalent expressions to [tex]21^x/7x[/tex] are 3^x and [tex]7^x * 3^x/ 7^x[/tex], and[tex](21/7)^x,[/tex]which can all be simplified to result in 3^x.

Explanation:

The expressions equivalent to 21^x/7x are checked by determining if they simplify down to the same value as the original expression. Taking the original expression 21^x/7x, it's clear that 21 can be rewritten as 7*p, so 21^x/7x simplifies to [tex](7*3)^x/7x = 7^x*3^x/7x = 3^x[/tex] (because [tex]7^x/7^x = 1).[/tex]

From the given options, Option C: 3^x, and Option E: [tex]7^x * 3^x/ 7^x[/tex]satisfy this criterion, as they also simplify to 3^x. Option F: (21/7)^x also simplifies as explained earlier to 3^x. So, options C, E, and F are equivalent to the original expression.

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The Candle Emporium is pouring cylindrical candles. Each candle has a radius of 5 inches and a height of 18 inches. Which formula represents the correct way to find the volume of a candle?
a. Volume= 5x18
b. Volume= pi (5) (18)
c. Volume= pi (18)squared (5)
d. Volume= pi (5)squared (18)

Answers

Hello!

The formula for finding the volume of a cylinder is [tex]V = \pi r ^{2}h[/tex]. The answer choice that matches this is answer choice D. Hope I helped! :3

Answer:

Option D is correct.

Step-by-step explanation:

We are given,

Height of the candles, h  = 18 inches

Radius of the candles, r = 5 inches

Candles are in shape of cylinder.

We have to find correct representation of volume of candle.

Volume of cylinder = [tex]\pi r^2h[/tex]

Volume of candle = ]tex]\pi (5)^2\times18[/tex]

Therefore, Option D is correct.

When is periodic data useful? Give examples to support your answer.

Answers

Periodic data is useful when you have to calculate measurements, estimates, temperature or other factors. Of the examples would be determining the wavelength of the ocean or tides. From the word itself "period", data will show the progress or changes from a given period of time.

Periodic data is useful for analyzing trends over time, helping to forecast future events, and measure frequencies of occurrences. It is applicable in various fields including business, environmental science, and health for planning strategies and understanding patterns.

Periodic data is useful when we are interested in analyzing and understanding trends over regular intervals of time. It helps us to observe patterns and forecast future occurrences based on historical information. For example, in business, we may look at quarterly sales figures to identify seasonal effects on sales and plan inventory accordingly. In environmental science, climate data recorded over decades can be critical for studying changes in weather patterns and predicting future climate events. In health, collecting epidemiological data periodically can enable public health officials to track the spread of diseases and the effectiveness of interventions.

Frequency, relative frequency, and cumulative relative frequency are measures that can describe how often certain events occur within periodic data. These measures help answer questions like 'How many students study five hours or more for an exam?' or 'What percent of families own two pets?' They are crucial for understanding the distribution of data and for making informed decisions based on that data.

Which system of inequalities is represented by the graph

Answers

For this case we have the following lines:
 y = x
 y = -x
 We then have to evaluate points that belong to the shaded region:
 For (0, 1) we have:
 1> = 0
 1> = - 0
 We observe that both equalities are fulfilled, therefore, we have that the inequalities are:
 y> = x
 y> = - x
 Answer:
 
y> = x
 
y> = - x
 
option D

Find the amount in a continuously compiunded account for the following condition. Principal, $4000; Annual interest rate, 5.1%; time, 2 years

Answers

Final answer:

Using the given principal of $4000, an annual interest of 5.1%, and a time period of 2 years, the amount in a continuously compounded account will be approximately $4483.48 using the formula A = P*e^(rt).

Explanation:

In this question, we are asked to find the amount in a continuously compounded account. The formula to calculate this is A = P*e^(rt), where A is the amount, P is the principal, r is the rate, t is the time, and e is the base of the natural logarithm, approximately equal to 2.71828.

In this case, P = $4000, r = 0.051 (5.1% expressed as a decimal), and t = 2.

Substituting these values into the formula, we get: A = 4000 * e^(0.051*2). Using a calculator, we can find this to be approximately $4483.48.

So, after 2 years with an annual interest rate of 5.1%, compounded continuously, the account will contain about $4483.48.

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If you want to put a 4x8 piece of plywood through a 3-foot square opening in your ceiling by turning it diagonally, is the opening big enough? Use 45-45-90 triangle since it is a square

Answers

THe diagonal of the 3*3 square = 3* sqrt2 = 4.24 feet   so the answer is Yes.

The first step is to calculate the length of the diagonal of the square opening.

The length of a diagonal of square = [tex] \sqrt{2} [/tex] * side

Given side = 3 feet

Length of the square hole = [tex] \sqrt{2} [/tex] *3 = 4.24 feet

since the diagonal is 4.24 feet and the shorter side of the plywood piece is only 4 feet, we can slide it through the square hole diagonally

Answer is YES since the diagonal 4.24 feet is greater than the shorter side of the plywood piece *4 feet

Complete the equation of the line through (-8,8) and (1,-10). Use exact numbers.

Answers

Since you know the x and y values, you just have to plug these into the linear slope-intercept equation:

y = mx + b
-10 = m(1) + b
m + b = -10
b = -10 - m

Now that we have a value for b, we can plug this into the other equation:

8 = m(-8) + b
8 = -8m + (-10 - m)
8 = -9m -10
18 = -9m
m = -2

Now that we know what m is equal to, we can plug this into our first equation to get an answer for b:

b = -10 - m
b = -10 -(-2)
b = -10 + 2
b = -8

Our final equation is y = -2x - 8

The equation of the line through (-8,8) and (1,-10) is y = -2x - 8

Using the slope intercept form equation.

y = mx + b

where

m = slope

b = y-intercept

Therefore,

(-8,8) (1,-10)

m = -10  - 8 / 1 + 8 =  - 18  / 9 = -2

Therefore,

let's find b as follows:

(1, -10)

y = -2x + b

-10 = -2(1) + b

b = -10 + 2

b= -8

Therefore,

y = -2x - 8

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The resonance frequency f in an electronic circuit containing inductance L and capacitance C in series is given by f=1/2π√LC. Determine the inductance L in an electric circuit if the resonance frequency is 6.2 and the capacitance is 0.0001. Round your answer to the nearest tenth.

10270.1
6.6
256.8
0

Answers

For this case we have the following function:
 f = 1 / (2π√LC)
 Clearing L we have:
 √LC = 1 / (2πf)
 LC = (1 / (2πf)) ^ 2
 L = (1 / C) * (1 / (2πf)) ^ 2
 Substituting values:
 L = (1 / 0.0001) * (1 / (2 * 3.14 * 6.2)) ^ 2
 L = 6.596253438
 Round to the nearest tenth:
 L = 6.6
 Answer:
 
L = 6.6
In this situation, you have to use the equation
 f = 1 / (2π√LC)
 

To find L
 √LC = 1 / (2πf)
 LC = (1 / (2πf)) ^ 2
 L = (1 / C) * (1 / (2πf)) ^ 2

 Substitute the values:
 L = (1 / 0.0001) * (1 / (2 * 3.14 * 6.2)) ^ 2
 L = 6.596253438
 L = 6.6
So the  Answer is this:
 L = 6.6

A typist charges $0.90 a page and averages 45 pages per work day. If she works 3 days a week, how much does she earn in a week?

Answers

the answer to this problem is 121.5

Final answer:

The typist earns $121.50 per week by multiplying the charge per page ($0.90) with the daily page average (45 pages) and the number of days worked per week (3 days).

Explanation:

The question asks us to calculate the weekly earnings of a typist who charges $0.90 per page and averages 45 pages per day, working 3 days a week. To find the total weekly earnings, we can multiply the number of pages typed per day by the charge per page, and then multiply that result by the number of days worked in a week.

Multiply the number of pages (45) by the charge per page ($0.90): 45 pages × $0.90 = $40.50 per day.

Multiply the daily earnings by the number of days worked in a week (3): $40.50 × 3 days = $121.50 per week.

Therefore, the typist earns $121.50 per week.

What is the trigonometric ratio for sin C?

Answers

The simplified fraction for sinC will be 9/41

what is the side length of a square with area 16 cm

Answers

Area = Length x Length 

Length² = 16

Length = √16

Length = 4

Answer: Length = 4cm
4cm. Since all sides of the square is equal in length, and the formula for area is base and width are the same, the equation will be x time x = 16. x times x equals x squared. So x squared =16. Square root of 16 is 4.

asmine works at the public library after school. She makes $7.00 per hour. She cannot work more than 15 hours per week. If y = 7x represents Jasmine's earning, what are the values in the domain?

Answers

(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15) are the domains

Daniela is a stain glass artist; she created the window below for her living room. What is
the area of the window she created?

Answers

The window has a shape of a semi-circle (half of a circle).

We know the diameter d = 12 ft.

The area of a (complete) circle is given by the formula:
A = π × r²

The radius can be found by halving the diameter:
r = d ÷ 2
  = 12 ÷ 2
  = 6 ft

Therefore the area of the circle will be:
A = π × r²
    = 3.14 × 6²
    = 3.14 × 36
    = 113.04 ft²

And the area of the semi-circle:
A = 113.04 ÷ 2
   = 56.52 ft²

Hence, the area of the window will be 56.52 ft².

22 POINTS, NEED URGENT HELP

Write the equation of each circle:

1. R with center R(-1, 8) and radius 5

2. K with center K(4,0) and that passes through (2,0)

Answers

1) start with (x-h)^2 + (y-k)^2 = r^2.  Insert the given info:  center at (-1,8) and radius 5:

              (x+1)^2 + (y-8)^2 = 5^2     (answer)

Park rangers notice a negative correlation between the number of available campsites in a park and the amount of litter on the park's trails. Which variable is most likely the lurking variable that explains the correlation? Question 3 options: age of trees in the park number of eagles spotted in the park number of visitors to the park density of trees in the park

Answers

The answer is The number of visitors to the park.

We have been given that a park rangers notice a negative correlation between the number of available campsites in a park and the amount of litter on the park's trails.

We need to figure out the lurking variable that describes the given correlation.

Out of the given options, the most appropriate variable that describes that negative correlation between number of available campsites in the part and the amount of litter on the park's trails is number of visitors to the park.

The reason, why number of visitors to the park is the lurking variable for the given negative correlation, is that more the number of visitors, more the litter they produce and consequently, lesser the number of available campsites.

Determine whether the given coordinates are the vertices of a triangle. Explain.

L(–24, –19), M(–22 ,20), N(–5, –7)


A:
yes:
LM + MN > LN,
LM + LN > MN,
LN + MN > LM
B:
no:
LM + MN = LN
C:
no:
LM + MN < LN
D:
yes:
LM + MN < LN,
LM + LN < MN,
LN + MN < LM

Answers

Answer:
yes
LM + MN > LN,
LM + LN > MN,
LN + MN > LM

Explanation:
In any triangle, the sum of any two sides MUST BE GREATER than the third side.
Therefore, to decide whether the given coordinates can form a triangle or not, we will simply get the length of each side and then check the above condition.

The length can be calculated using the distance formula attached in the image.

LM = [tex] \sqrt{(-24--22)^2+(20--19)^2} [/tex] = 39.05 units
MN = [tex] \sqrt{(-5--22)^2+(-7-20)^2} [/tex] = 31.906 units
NL = [tex] \sqrt{(-5--24)^2+(-7--19)^2} [/tex] = 22.4722 units

Now, let's check:
LM + MN = 39.05 + 31.906 = 70.956 units > NL
MN + NL = 31.906 + 22.4722 = 54.3782 > LM
LM + NL = 39.05 + 22.4722 = 61.5222 > MN

Therefore,, the given coordinates can form a triangle

Hope this helps :)

Final answer:

After computing the distances between the points L, M, and N using the distance formula and comparing them, it is clear that the sum of the lengths of any two sides is greater than the length of the third side, satisfying the conditions of a triangle.

Explanation:

To determine whether the given coordinates are the vertices of a triangle, we can check if the sum of the lengths of any two sides is greater than the length of the third side, which is a principle derived from the triangular inequality theorem. First, we calculate the distances between the points L(–24, –19), M(–22, 20), and N(–5, –7) using the distance formula: √((x2-x1)² + (y2-y1)²).

For LM: √((-22 + 24)² + (20 + 19)²) = √(4 + 1521) = √(1525)

For MN: √((-5 + 22)² + (-7 - 20)²) = √(289 + 729) = √(1018)

For LN: √((-5 + 24)² + (-7 + 19)²) = √(361 + 144) = √(505)

Now we compare the lengths:

LM + MN > LN

LM + LN > MN

LN + MN > LM

Since all three conditions are satisfied, the points L, M, and N form a triangle.

Q1 :Let f(x)=2x^2−8


The quadratic function g(x) is f(x) translated 2 units down


What is the equation for g(x)


Q2 Let f(x)=[tex] \frac{3}{4} [/tex]x2−1.


The function g(x) is a vertical stretch of f(x) by a factor of 8.


What is the equation of g(x)?


Q3 The graph of the function g(x) is a transformation of the parent function f(x)=x2 .


Which equation describes the function g?

(refer to picture attached)

A. g(x)=x2+2 ​

B. g(x)=(x−2)2

C. g(x)=(x+2)2 ​

D. g(x)=x2−2

Answers

Question # 1.

[tex]f(x) = 2 x^{2} -8 \\[/tex]
g(x) is the translation of f(x) 2 units down.

Vertical translation can be expressed as addition or subtraction of a number from the function value. Subtraction indicates that the function is translated down. So, translation of f(x) by 2 units down can be expressed as:

g(x) = f(x) - 2
Using the value of f(x), we can write:

[tex]g(x)= 2x^{2} -8-2 \\ \\ g(x)=2 x^{2} -10[/tex]

Question # 2

[tex]f(x)= \frac{3}{4} x^{2} -1 [/tex]

A function can be vertically stretched by multiplying it with a number having magnitude greater than 1. f(x) is to be stretched by a factor of 8 to get g(x), so we can write:

g(x) = 8 * f(x)

Using the value of f(x) we can write:

[tex]g(x)=8* (\frac{3}{4} x^{2} -1) \\ \\ g(x)=6 x^{2} -8[/tex]

How many different soccer teams consisting of 11 players can be formed from 18 players?

Answers

This is asking for a combination since order doesn’t matter

18 c 11

Combination = n!/(n-r)!r!

18!/(7! * 11!)

There are 31,824 possible teams

If a recipe calls for 3 servings calls for 2 grams of saffron . how many mililgrams of saffron are needed for 6 servings

Answers

If 3 servings needs 2 grams then 6 servings needs twice as much. So 6 servings needs 4 grams which equals 4000 milligrams.

Rico saved $30 to buy office supplies. He needed a binder that cost $9.99 , including tax,and three pens that cost $1.99 each,including tax. How much money will Rico have left after he buys the pens and the binder?

Answers

He would have $14.04 left over

In a car how many miles do you go per day? How many days until you hit 10,000 miles?

Answers

I drive 25 miles per day

divide the number of miles per day by the total miles to find how long it will take:

10,000 miles / 25 miles per day = 400 days


The Average American Driver drives 33.3 Miles per day. so take that statistic and divide it by 10,000 youll get 300 so like 10 months. but it depends on how much you drive a day, some people drive up to 88 miles a day
Other Questions
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