A 30-foot ladder is set against the side of a house so that it reaches up 24 feet. If Elizabeth grabs the ladder at its base and pulls it 3 feet farther from the house, how far up the side of the house will the ladder reach now? (The answer is not 21 ft.) Round to the nearest tenth of a foot.

Answers

Answer 1

Use the Pythagorean theorem to calculate the distance from the wall the ladder originally is:

x = sqrt(30^2 - 24^2)

x = sqrt(900-576)

x = sqrt(324)

x = 18

The ladder was originally 18 feet from the wall. Moving the ladder 3 feet further away makes the new distance 18 + 3 = 21 feet.

Now use the Pythagorean theorem again to find the new height of the ladder.

Height = sqrt(30^2 - 21^2)

Height = sqrt(900 - 441)

Height = sqrt(459)

Height = 21.42

Rounded to the nearest tenth = 21.4 feet.

Answer 2

Answer:89

Step-by-step explanation:

23+9


Related Questions

KHAN ACADEMY..... AGAIN..

Answers

Answer:

x = 12

Step-by-step explanation:

10x+24 = 6x+72

10x - 6x = 72 - 24

4x = 48

x = 12

Answer:

144

Step-by-step explanation:

10x+24=6x+72

-6x          -6x

4x+24=72

     -24  -24

4x=48

/4   /4

x=12

<A=10(12)+24

<A=120+24

<A=144

Find the Value of x.

Answers

i got 83! hope this helps

Directions: Find the odds and the probability of the event(s) occuring.
You roll a fair six-sided die twice. The
first roll shows a one and the second roll
shows a two.
Plone and then two) =
Odds =

Answers

Answer:

1/36

Step-by-step explanation:

You Have Tiangle XYZ with X(-7,-9), Y(-10,-3), and Z(-1,-9) After a 90 Degree Counterclockwise rotation, what is the new coordinate of Z'?

Answers

Answer:

Z'(9, - 1)

Step-by-step explanation:

For a 90 degree counterclockwise rotation about the origin,

The original coordinates of point P (x,y) will now be positioned as P' (-y,x).

Hence, given :

Triangle XYZ with X(-7,-9), Y(-10,-3), and Z(-1,-9)

The new position of Z denoted as Z' will be :

Z(-1, - 9) ; X = - 1 ; y = - 9

-y = - - 9 = 9

x = - 1 will remain as - 1

Z(-1, - 9) - - - > Z'(9, - 1)

Sydney currently earns 11.50 an hour working part time. What is the minimum increase per hour she needs to at least match the average annual rate of inflation at three percent

Answers

Answer:

The salary of Sydney to meet the loss due to inflation should be 11.85 per hour

Step-by-step explanation:

The inflation rate is 3%

This means that the alary amount will reduce by 3%.

3% of Sydney's hourly salary is

[tex]\frac{3}{100} *11.50[/tex] = 0.345

Hence, the new salary must increase by 0.345 dollar per hour

The salary of Sydney to meet the loss due to inflation should be 11.50 + 0.345 = 11.845 or 11.85

Solve for a
3x - 2 = 4x + 5

Answers

Answer:

X = -7

Step-by-step explanation:

3x-2=4x+5
3x-4x=5+2
-x=7
X=-7
Explanation:
There is no a

Please help me!!!! The problem is down below.

Answers

Answer:

3:2

Step-by-step explanation:

lisa has 36 stickers, and john has 24, making the ratio 36:24, since they are both devisable by 12, you would get 3:2

Answer:

3:2

Step-by-step explanation:

Is d = -4 a solution to the equation 3(d + 12) = 8 - 4d ?​

Answers

No because...

3(d+12) =8

Distribute the 3.

3d+36=8

Subtract the 36.

3d = -28

Divide by 3 to isolate d.

d = -28/3 or 9.33

Giving brainlist to whoever answers

Answers

Answer:

b

Step-by-step explanation:

Answer:

it should be a

Step-by-step explanation:

the symbol means less than or equal to so she will have more then 120 buttions

Can someone please help me? I don't understand how to do this. I need to multiply this polynomial 3(X-2)^4. Also, the ^4 means the power of 4, or exponent 4.

Answers

Answer:

do you need a graph of it or it just multiplied out step by step?

Answer:

3x^4-24x^3+72x^2-96x+48

Step-by-step explanation:

1. (x-2)^4

=(x-2)(x-2)(x-2)(x-2)

=x^4-8x^3+24x^2-32x+16

2. 3(x^4-8x^3+24x^2-32x+16)

=3x^4-24x^3+72x^2-96x+48

Identify any outliers of the data set. Then determine the effect that the outlier has on the mean.


375, 350, 400, 375, 375, 425, 350, 125, 400


I swear I get so confused with these-

Answers

Answer:

125 is an outlier

125 changes the mean by 23 points (from 375 to 352)

Step-by-step explanation:

an outlier is 1.5 times the IQR

the InterQuartile Range of this set of data is 400-350 or 50

50 x 1.5 = 75

the only data value that is 75 points from the IQR is 125

Evaluate the expression shown below and write the answer as a fraction in simplert form.

Answers

Answer:

-8/19

Step-by-step explanation:

-11/19 + 3/19

Since the denominators are the same, we add the numerators

(-11+3) /19

-8/19

The standard diameter of a golf ball is 42.67 mm.

A golf ball factory does quality control on the golf balls it manufactures. Golf balls are randomly measured to ensure the correct size. If the discrepancy in diameter is more than 0.004 mm, the production is stopped.

Which function could represent this situation

Answers

Answer:

The first one is the second option

The second one is the 2 and 4 options

Step-by-step explanation:

It’s right on ed

Answers:

B. (f(x) = |42.67 – x|)

B and D (42.6668 mm and 42.673 mm)

the next slide-

The parent function has a slope of 1 or -1 from any point to the vertex. In the problem, we are given the points

(–2, 3) and (–1, 0)

The slope between the two points is

m = 0 - 3 / (-1 - (-2))

m = 3

The slope is greater than 1. Therefore, the graph has been dilated by a scale factor other than 1.

HRLPPPPP IM FAILING MATHH

Answers

It’s the third one

B=50.27 cm
V=371.97

A rectangle 9cm long is equal on area to a square which has a perimeter of 24cm. find the width of the rectangle​

Answers

Answer:

the width is 64cm

Step-by-step explanation:

24 x 24 = 576

576 ÷ 9 = 64

Radioactive technetium-99m is often used in diagnostic medicine because it has relatively short half-life but lasts long enough to get the needed testing done on the patient. If its half-life is 6 hours, how much of the radioactive material from a 2.5ml injection will be in the body in 30 hours? Write your answer rounded to nearest hundredth.

Answers

Using an exponential function, it is found that 0.08 ml of the will be in the body in 30 hours.

The amount of a decaying substance is modeled by an exponential function in the following format:

[tex]A(t) = A(0)e^{-kt}[/tex]

In which:

A(0) is the initial amount.k is the decay rate, as a decimal.

In this problem, the half-life is 6 hours, which means that [tex]A(6) = 0.5A(0)[/tex], and this is used to find k.

[tex]A(t) = A(0)e^{-kt}[/tex]

[tex]0.5A(0) = A(0)e^{-6k}[/tex]

[tex]e^{-6k} = 0.5[/tex]

[tex]\ln{e^{-6k}} = \ln{0.5}[/tex]

[tex]-6k = \ln{0.5}[/tex]

[tex]k = -\frac{\ln{0.5}}{6}[/tex]

[tex]k = 0.11552453009[/tex]

Hence:

[tex]A(t) = A(0)e^{-0.11552453009t}[/tex]

2.5 ml injection, hence [tex]A(0) = 2.5[/tex]

After 30 hours, we have to find A(30), hence:

[tex]A(t) = 2.5e^{-0.11552453009t}[/tex]

[tex]A(30) = 2.5e^{-0.11552453009(30)}[/tex]

[tex]A(30) = 0.08[/tex]

0.08 ml of the will be in the body in 30 hours.

A similar problem is given at https://brainly.com/question/16984805

Hiooo! I need help could someone help please❤️ :D

Answers

Answer:

The answer is D, sqrt(41)in.

Step-by-step explanation:

The question is asking about the hypotenuse L. You can get that by using the Pythagorean Theorem( a^2+B^2=C^2). You can get the bottom length of the triangle by dividing 8 by 2, because the triangle is made from the top point of the pyramid. You can there do 5^2+4^2, which is 41. You then need to take the square root of that, or [tex]\sqrt{41}[/tex].

Answer:

Hello! Your answer would be, D) [tex]\sqrt{41} in.[/tex]

Step-by-step explanation:

Hope I helped! Ask me anything if you have questions! Brainiest plz. Hope You make a 100%! Have a nice day! -Amelia♥

HELP PLS‼️‼️‼️‼️‼️‼️‼️‼️

Answers

Answer:

64 sq cm

Step-by-step explanation:

divide the shape into a 6x8 rectangle and a 4 x 8 triangle

6x8=48

.5x4x8=16

48+16=64

I forgot how to solve multistep equations. Let me explain, I forgot how to solve the equations that are like x + 36 = 4x, I don't understand it, Help?

Answers

I think this is the answer if you follow the order of operations. X=12

If you get $0.75 everyday for 7 years and already have $4.35 (not counting leap years) how much money would you have at the end of it all?

Answers

Step-by-step explanation:

7 years

leap years in 7 years:- 1

7 minus 1 equals to 6

6 calendar years to days:- 2190 days

so, $0.75 times 2190 = $1642.5

1642.5 plus $4.35 equals to 1646.85

how many times does 10 go into 2000

Answers

2000/10=200

The answer is 200 times

Find the measure of the exterior angle.

Answers

110 degrees because the other side is equal to 70° and the line is 180 so you would subtract 70 from 180 to get you 110°

[tex] \huge{ \mathfrak{ Answer }}[/tex]

Exterior angle = sum of opposite interior angles,

so,

[tex] \boxed{(t + 10 )+( t )= 180-(t + 20)}[/tex]

[tex]2t + 10 = 180 - t - 20[/tex][tex]2t + t = 160 - 10[/tex][tex]3t = 150[/tex][tex]t = 50[/tex]

value of t = 50°

[tex] \boxed{Exterior \: \: angle = 180 -(t + 20)}[/tex]

[tex]180 - (50 + 20)[/tex][tex]180 - 70[/tex][tex]110°[/tex]

measure of exterior angle is 110°

[tex] \normalsize{ \#TeeNForeveR}[/tex]

Use the system of two linear equations to answer the question. 2x+5y=4 y=2x+8 Which of the following statements is correct about the solution of the system? A The x-coordinate is 2. B The x-coordinate is -3. C The y-coordinate is -3. D The y-coordinate is 5.

Answers

2x + 5(2x+8) = 4
2x + 10x + 40 = 4
12x = -36
x= -3
So it’s B

For each pair of equations draw the lines for each the point of intersection represents the sol y=3x-1 y=2x

Answers

Answer:

Point of intersection is - (x, y) = (1, 2)

Step-by-step explanation:

Given - y=3x-1 y=2x

To find - For each pair of equations draw the lines for each the point of intersection represents the sol.

Proof -

Given that, the two lines are

y = 3x - 1            .........(1)

y = 2x                 .........(2)

For the intersection point, Compare the two equations (1) and (2)

By comparing, we get

3x - 1 = 2x

⇒3x - 2x - 1 = 0

⇒x - 1 = 0

⇒x = 1

Now,

Put the value of x in equation (1), we get

y = 3(1) - 1

   = 3  - 1

   = 2

⇒y = 2

∴ we get

Point of intersection is - (x, y) = (1, 2)

The graph is as follows :

The length of a planet's orbit around a star is approximately 16,340,000 km. It takes the planet about 810 Earth days to complete a full orbit. What is the planet's average speed in kmh-1 to 3sf? HELP

Answers

Answer:

841 kmh-1

Step-by-step explanation:

speed = distance / time

time = 810 x 24 = 19440

16,340,000 km / 19440 = 840.535

Ethan has packed 6 shirts, 4 pairs of pants and 2 pairs of shoes for vacation. How many possible outfit combinations does Ethan have for his trip?
4
48
12
6

Answers

Answer:

Ethan can make 48 possible combinations.

Step-by-step explanation:

Given that Ethan has packed 6 shirts, 4 pairs of pants and 2 pairs of shoes for vacation, to determine how many possible outfit combinations does Ethan have for his trip the following calculation must be performed:

Shirts x pants x shoes = Number of combinations

6 x 4 x 2 = X

24 x 2 = X

48 = X

Therefore, Ethan can make 48 possible combinations.

Answer:

48

Step-by-step explanation:

I took the test and got it right

Use the Zero Product Property to solve the equation (x – 5)(x + 4) = –14.

Answers

Answer:

x = 3   or  x = -2

Step-by-step explanation:

(x - 5)(x + 4) = [tex]x^{2} - x - 20[/tex] = -14

                      [tex]x^{2} - x -6 = 0[/tex]

                      (x - 3)(x + 2) = 0

                       x = 3   or  x = -2

Which would NOT be included on an income statement for the Best Brand Company? A. Projected Profit b. Net Sales c. Cost of Goods d. Operating Expenses Please select the best answer from the choices provided A B C D

Answers

Answer:

Option A

Step-by-step explanation:

The income statement comprises of income made in a given year.

It never gives details of the target income or the income projected.

Hence, projected profit will not be included in the income statement. Rest all other options i,e Net Sales c. Cost of Goods d. Operating Expenses are the actual income and expenditure components that are included in a income statement

Option A is correct

Answer:A

Step-by-step explanation:I just took the test

Please help fast if appreciate it

Answers

Answer:

In 30 days the rainfall level will be 30 × (2.3 +- 0.05 mm) or 69.0 +- 1.5 mm

The number (6) is what type
of number?​

Answers

Answer:

even?

Step-by-step explanation:

I dont really get it

Answer:

Natural number, Composite number, Smallest perfect number

Step-by-step explanation:

Hope this helps!

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