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german
3 years ago
5

Using PYTHAGORAS THEOREM answer the question A vertical pillar ab bent at c at a height of 2.4m and its upper end b touches the

ground at d at a distance of 1.8m from the end a on the ground find the height of the pillar ab
Mathematics
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

  5.4 m

Step-by-step explanation:

The Pythagorean theorem tells you the relationship between the various lengths is ...

  cd² = ac² +ad²

  cd² = (2.4 m)² + (1.8 m)² = 9.00 m²

  cd = √(9.00 m²) = 3.0 m

Since cd = cb and ab = ac+cb, we have ...

  ab = 2.4 m + 3.0 m = 5.4 m

_____

You may recognize this as a 3-4-5 right triangle with a scale factor of 0.6. We are asked for the sum of the lengths of the "4" and "5" legs, which is ...

  0.6·(4+5) = 5.4

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Rachel is a stunt driver, and she's escaping from a building that is about to explode! DDD represents Rachel's remaining distanc
skelet666 [1.2K]

Answer:

38 m/s

Step-by-step explanation:

We are given that

D represent Rachel's remaining distance( in meters ) as  a function of time is given by

D=-38t+220

We have to find the Rachel's speed.

We know that

Velocity=\frac{ds}{dt}

Substitute the values then we get

v=\frac{d(-38t+220)}{dt}=-38 m/s

Speed =\mid v\mid

Speed =\mid -38\mid =38m/s

Hence, the Rachel's speed is given by =38 m/s

4 0
3 years ago
ANSWER NOW!! QUICKLY (EASY)
elena55 [62]

Answer:

2,640 ft

Step-by-step explanation:

You first find the difference between the two distances, 0.5 miles. One mile is 5280 feet, so

0.5 x 5280 = 2640

6 0
3 years ago
Football teams toss a coin to see who will get their choice of kicking or receiving to begin a game. the probability that given
Artist 52 [7]

In a toss coin, the only result is a head or a tails. Therefore that ½ of the time you can win or ½ of the time you can lose. Therefore the probability of losing three games in a row is:

<span>P = (1/2) * (1/2) * (1/2)
P = 0.125</span>

<span>Therefore the answer is “True”.</span>

7 0
3 years ago
Read 2 more answers
Use the distributive property to multiply.<br><br> -(-16m-1)
Pepsi [2]

Answer:

16m+1

Step-by-step explanation:

Knowing about our proprieties about parentheses and negatives, let's solve this out.

<u>A negative multiplied by a negative give you a positive</u>

therefore....

-(-16m-1)= 16m+1

The -1 also receives the negative because the problem was in a parentheses :)

8 0
3 years ago
System by elimination <br><br>2x - y = -3 <br>-2x - 8y = 12​
topjm [15]

Answer:

x= -2 y= -1

Step-by-step explanation:

stack the 2 equations on top of each other and add them together

the 2x and -2x cancel out and you are left with -9y=9

this gives you y= -1

you plug the y value into one of the equations:

2x - (-1) = -3

2x+1 = -3

2x= -4

x= -2

7 0
2 years ago
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