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2 years ago

15/23 - 5/23lets see who can solve

Mathematics

2 answers:

seraphim [82]2 years ago

7 0

Answer:

10/23

Step-by-step explanation:

15/23 - 5/23 = 10/23(Ans)

masya89 [10]2 years ago

3 0

Answer:

10/23

Step-by-step explanation:

(15/23-5/23) L. C. M = 23

15-5=10

=10/23

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A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an

____ [38]

Answer: 70 meters.

Step-by-step explanation:

Observe the figure attached.

The distance between the walls is:

$DE=AD+AE$

Both triangles are right triangles. Therefore, you can calculate the distance between the walls as following:

- Calculate the distance AD:

$cos\alpha=\frac{adjacent}{hypotenuse}\\\\cos(60\°)=\frac{AD}{60}\\AD=30m$

- Calculate the distance AE:

$tan\beta =\frac{opposite}{adjacent}\\\\tan(45\°)=\frac{40}{AE}\\\\AE=\frac{40}{tan(45\°)}\\\\AE=40m$

Therefore the distance between the walls is:

$DE=30m+40m=70m$

6 0

2 years ago

Read 2 more answers

Please Help!!! Evaluate the following 2/((3-(3-1))*3-1)

antiseptic1488 [7]

2/ 3 - (3 - 1) * 3 - 1 = -4
Simplify
= 2/-4
which is
= -2/4
Then simplify again
= -1/2

6 0

2 years ago

5. (3x2 – 13x – 10) ÷ (x – 5)

IgorC [24]

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$( 3 {x}^{2} - 13x - 10 ) \div (x - 5) = \\$

$\frac{3 {x}^{2} - 13x - 10 }{x - 5} = \\$

$\frac{(x - 5)(3x + 2)}{(x - 5)} = \\$

$3x + 2$

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2 years ago

Help this is due today

Gelneren [198K]

Answer:

2 1/2 I think

Step-by-step explanation:

you find the L.C.M for all the fractions and multiply it. You should end up with whole numbers.

It should look like this

2n+3n=2

n= 2n+3n = 5

2 2

n= 2 1/2

8 0

2 years ago

Given the equation. solve for x and identity if it is an extraneous solution.

Usimov [2.4K]

Answer:

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

15/23 - 5/23lets see who can solve​

15/23 - 5/23lets see who can solve