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Tatiana [17]
3 years ago
13

A drawbridge will sometimes open up to let boats and other water traffic pass through. As it opens, the surface of the drawbridg

e raises above the level of the roadway, as modeled by the function: If the length of the drawbridge, r, is 18 meters, and the point P is 7 meters above the roadway, what is the distance d?
Mathematics
2 answers:
Reika [66]3 years ago
7 0

Answer:

The distance d is 16.583 meters ( approx )

Step-by-step explanation:

Here, r represents the length of the drawbridge, p represents the point above the roadway and d represents the distance d,

Let h be the distance of point P above the roadway,

Hence, the function that shows the given situation,

R=\sqrt{h^2+d^2}

Here, r = 18 meters, h = 7 meters,

\implies 18=\sqrt{7^2+d^2}

\implies 324 = 49+d^2

\implies 275=d^2\implies d=16.5831239518\approx 16.583\text{ meters}

Thus, The distance d is 16.583 meters ( approx )

olasank [31]3 years ago
3 0
16.6 meters D on apex

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00:00
stiks02 [169]

Answer:

i think D

Step-by-step explanation:

5 0
2 years ago
Q3. A bag contains 7 red balls and 3 green balls. A ball is taken out replaced.
ycow [4]

Part (a)

There are 7 red out of 7+3 = 10 total

<h3>Answer: 7/10</h3>

==========================================================

Part (b)

We have 3 green out of 10 total

<h3>Answer: 3/10</h3>

==========================================================

Part (c)

3/10 is the probability of getting green on any selection. This is because we put the first selection back (or it is replaced with an identical copy)

So (3/10)*(3/10) = 9/100 is the probability of getting two green in a row.

<h3>Answer: 9/100</h3>

==========================================================

Part (d)

Similar to part (c) we have 7/10 as the probability of getting red on each independent selection.

(7/10)*(7/10) = 49/100

<h3>Answer: 49/100</h3>

==========================================================

Part (e)

7/10 is the probability of getting red and 3/10 is the probability of getting green. Each selection is independent of any others.

(7/10)*(3/10) = 21/100

<h3>Answer: 21/100</h3>

==========================================================

Part (f)

We have the exact same set up as part (e). Notice how (7/10)*(3/10) is the same as (3/10)*(7/10).

<h3>Answer: 21/100</h3>
7 0
2 years ago
pe ling needs 2 yards of fabric for a craft project. she has 3 feet already.how many niches of fabric does she still need?
spin [16.1K]
2yards= 72 inches
72 inches= 6 feet

so now that you know that, you know that she needs 6 feet and already has 3 feet. so she just needs 3 feet more. but they are asking for the answer to be in inches. 

3 feet= 36 inches
your answer in 36 inches
5 0
3 years ago
Someone plz help!!!!!! ​
aliina [53]

Answer: X = 7√2

Step-by-step explanation:

Let first Consider triangle BDC,

Cos C = adjacent/ hypothenus

Cos C = 7 / x ...... (1)

Also, let consider triangle ABC

Cos C = adjacent / hypothenus

Cos C = x / 14 ....... (2)

Since angle C is the same, equate equation 1 to 2

7/ x = x / 14

Cross multiply

X^2 = 98

Make x the subject of formula

X = sqrt (98)

X = sqrt ( 49 × 2 )

X = sqrt (49) × sqrt (2)

X = 7 sqrt(2)

X = 7√2

8 0
3 years ago
A box contains eight cards labeled P, Q, R, S, T, U, V, and W. One card will be randomly chosen.
Varvara68 [4.7K]

Answer:

7/8

Step-by-step explanation:

Probability= (Cards having letter Q to W)/(All cards) = 7/8

6 0
3 years ago
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