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3 years ago

15

What is 2 1/6 - 1 2/7= write in simplest form. Show steps

1 answer:

Kryger [21]3 years ago

4 0

21 - 12 = 21 - 12 = 9
~~ ~~ ~~~~~~ ~~
6 7 42 42
multiply common
denominator

You first have to find the common denominator and then do the substraction
Hope it helps :)

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A fire department's ladder is 110 feet long. A firefighter is trying to reach the top of a 100 foot building by leaning the ladd

Alekssandra [29.7K]

Answer:

sin-¹(10/11)

Step-by-step explanation:

The height of the building is 100 ft and the ladder is 110ft long .We can imagine this situation as a right angled ∆. For figure refer to the attachment .

We can use ratio sine here. Let the angle of elevation be theta.

<u>In </u><u>∆</u><u> </u><u>ABC </u><u>:</u><u>-</u><u> </u>

=> sinθ = p/h

=> sinθ = 100ft / 110 ft

=> sinθ = 10/11

=> θ = sin -¹ ( 10/11) .

<h3><u>Hence </u><u>the</u><u> </u><u>angle</u><u> of</u><u> elevation</u><u> </u><u>is </u><u>sin </u><u>-</u><u>¹</u><u> </u><u>(</u><u> </u><u>1</u><u>0</u><u>/</u><u>1</u><u>1</u><u>)</u><u>. </u><u> </u></h3>

6 0

3 years ago

Heeeeeeeeelp!!!!!!!!!!!!!!!!

alekssr [168]

Hello,

(√11-√3)(√11+√3)(√11-√5)=(11-3)(√11-√5))=8(√11-√5)
=8√11-8√5

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3 years ago

90 x= 81 + 25 <br> I need help ?

charle [14.2K]

Answer:

$x = \frac {53} {45}$

Step-by-step explanation:

<u>Step 1: Combine on the right side </u>

$90x = 81 + 25$

$90x = 106$

<u>Step 2: Divide both sides by 90 </u>

$\frac {90x} {90} = \frac {106} {90}$

$x = \frac {106/2} {90/2}$

$x = \frac {53} {45}$

Answer: $x = \frac {53} {45}$

4 0

3 years ago

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a sprinter increases the speed from 0 meters per second to 9 meters per second in 2 seconds. what is the acceleration

mote1985 [20]

Answer:

The acceleration is

$4.5 {ms}^{ - 2}$

Step-by-step explanation:

Use the equation of motion,

$v = u + at$

where u=0m/s is the initial speed, v=9m/s is the final speed and t=2 seconds is the time.

We substitute the values into the equation and solve for the acceleration, a

$9 = 0 + a(2)$

This means that;

$9 = 2a$

Divide both sides by 2 to get:

$a = \frac{9}{2}$

$a = 4.5 {ms}^{ - 2}$

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3 years ago

Solve for S<br><br> P=4s<br><br> Please answer!!!!

Karolina [17]

Answer:

b

Step-by-step explanation:

divide both sides of the equation by 4 to leave s by itself

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3 years ago

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