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daser333 [38]
3 years ago
6

PLEASE HELP FAST

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
3 0
Every difference of squares problem can be factored as follows: a2 – b2 = (a + b)(a – b) or (a – b)(a + b). So, all you need to do to factor these types of problems is to determine what numbers squares will produce the desired results.
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A 25-foot long ladder is propped against a wall at an angle of 18° with the wall. how high up the wall does the ladder reach? ro
Alecsey [184]

Answer

Find out the how high up the wall does the ladder reach .

To proof

let us assume that the height of the wall be x .

As given

A 25-foot long ladder is propped against a wall at an angle of 18° .

as shown in the diagram given below

By using the trignometric identity

cos\theta = \frac{Base}{Hypotenuse}

now

\theta = 18^{\circ}

Base = wall height = x

Hypotenuse = 25 foot

Put in the trignometric identity

cos18^{\circ} = \frac{x}{25}

cos18^{\circ} = \bar{0.9510565162}

x = 23.8 foot ( approx)

Therefore the height of the  ladder be 23.8 foot ( approx) .

8 0
3 years ago
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Answer the second question only please :D
irakobra [83]
1. Y= -3/4x - 2
2. Y= 5/6x + 8
4 0
3 years ago
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The first car of the D-line train carried 1.5 times the number of passengers that the second car carried. Three passengers get o
kondor19780726 [428]

Answer:

the first car has 15 passengers and the second has 10

Step-by-step explanation:

7 0
3 years ago
Point K is on line JL. given JL =4x, JK= 2x+3, and KL=x, determine the numerical length of kl​
balandron [24]

Hi! I'm happy to help!

Our total line is JL (4x), and it is split into two parts: JK, and KL. We have our values, and we know that JK+KL=JL, so we can substitute our values and solve for x:

4x=(2x+3)+(x)

4x=3x+3

To solve for x, we have to isolate it on one side of the equation.

First, let's subtract 3x from both sides so that we can isolate x:

4x=3x+3

-3x -3x

x=3

<u>So, our x=3, which means that KL=3.</u>

I hope this was helpful, keep learning! :D

5 0
3 years ago
To prepare for a triathlon, Mary swam 6.2 miles, jogged 10.5 miles, and biked 18.1 miles. In total, how many miles did she trave
ycow [4]
Mary traveled 34.8 miles. Just add them all up!
7 0
3 years ago
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