Ask question

Ask question

All categories

2 years ago

15

A 20ft ladder is resting against the side of a house. The base of the ladder is 4ft away from the house. How high above the grou

nd does the ladder touch the house? Round your answer to one decimal place.

1 answer:

goldenfox [79]2 years ago

4 0

19.6.
C^2-A^2=B^2
20^2-4^2=19.595

You might be interested in

Find an equation of the line perpendicular to the graph of 14x-7y=8 that passing through the point at (-2,5).

MAXImum [283]

Answer:

2x + 4y = 16.

Step-by-step explanation:

14x - 7y = 8

Convert to slope-intercept form:

-7y = -14x + 8

y = 2x - 8/7

The slope is 2 so the line perpendicular to it has a slope of -1/2, so we have:

y = 1/2x + c

This line passes through the point (-2, 5) so:

5 = -1/2* (-2) + c

5 = 1 + c

c = 5 - 1 = 4

So our equation is y = -1/2x + 4.

Convert to standard from

4y = -2x + 16

2x + 4y = 16.

7 0

3 years ago

Express with radical signs instead of fractional exponents. Rationalize the denominator.

CaHeK987 [17]

$x^{\frac{1}{2}} = \sqrt[2]{x}$ and $3^{-\frac{1}{2}} = \frac{1}{3^{\frac{1}{2}} } = \frac{1}{\sqrt[2]{3}}$ so

$3^{-\frac{1}{2}} x^{\frac{1}{2}} = \frac{1}{\sqrt{3}} \cdot \sqrt{x} = \frac{\sqrt{x}}{\sqrt{3}}$

and you rationalize denominator by multiplying numerator and denominatr by $\sqrt{3}$ so that gives--

$\frac{\sqrt{x}}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}} = \frac{\sqrt{3x}}{3}$

Your answer is $\frac{\sqrt{3x}}{3}$

5 0

3 years ago

Calculate the area of the given circle.

kirill [66]

Answer:

63.59 (c)

Step-by-step explanation:

Formula: π $r^{2}$

Plug in data:

9cm is diameter and a radius is half a diameter so the radius is 4.5cm.

π x 4.5^2 = 63.59cm^2

8 0

2 years ago

Plssss help this is Due 3:00 pm 1/3÷2

vaieri [72.5K]

Answer:

1/6

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

six florists can make six floral arrangements in one half hour. Working at the same rate, how many flower arrangements can six f

olganol [36]

Answer: 48

Step-by-step explanation:

7 0

2 years ago