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2 years ago

BRAINLIEST TO CORRECT

Mathematics

2 answers:

GarryVolchara [31]2 years ago

4 0

Since the common denominator is the same, ignore the 2 and do -4/5-2/5= -6/5

-6/5 as a mixed number is -1 1/5. Add the 2 to the 1 and you get: -3 1/5

Another method:

Make everything an improper fraction:
-14/5-2/5 = -16/5= -3 1/5

xxMikexx [17]2 years ago

3 0

Answer:

-16/5

Alternate form

-3 1/5, -3.2

Step-by-step explanation:

-2 4/5 + (-2/5)

Convert the mixed number to an improper fraction

-14/5 + ( -2/5)

When there is a + in front of an expression in parentheses, the expression remains the same

-14/5 - 2/5

Calculate the difference

-16/5

Solution

-16/5

Alternate form

-3 1/5, -3.2

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Nataly [62]

Answer:

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Step-by-step explanation:

2x-3y=18

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2 years ago

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2 years ago

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liubo4ka [24]

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2 years ago

Two vertical poles of length 10 and 12 feet, respectively, stand 17 feet apart. A cable reaches from the top of one pole to the

Marat540 [252]

Answer:

$L=\sqrt{x^{2}+100}+\sqrt{x^{2}-34x+433} ft$

Step-by-step explanation:

let length of calble = L

distance from 10-foot pole = x ft

Moving from the top of the 10-foot pole to point x, we have

From the diagram that

$x^{2} +10^{2}=L_{1} ^{2} \\x^{2} + 100 = L_{1} ^{2}$

Take the square root of both sides

$\sqrt{x^{2}+100}=\sqrt{L_{1} ^{2}}\\ \sqrt{x^{2}+100}= L_{1}$

Moving from point x to the top of the 12-foot pole, we have

From the diagram that

$(17-x)^{2}+12^{2}=L_{2} ^{2} \\289-34x+x^{2} +144=L_{2} ^{2}\\x^{2} -34x+433=L_{2} ^{2}$

Take the square root of both sides

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$L=\sqrt{x^{2}+100}+\sqrt{x^{2}-34x+433}$

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