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3 years ago

Solve the equation below 3h - 2( 4h - 5 ) = 10 - 5h

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

8 0

Answer:

Infinite solutions

Step-by-step explanation:

3h-8h+10=10-5h

-5h+5h=10-10

0=0

Infinite solutions

Setler [38]3 years ago

7 0

Answer:

This should be the correct answer.

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the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur

natita [175]

Answer:

The width of the frame is equal to $8\ cm$

Step-by-step explanation:

Let

x-------> the width of the frame picture

we know that

$(28-2x)(32-2x)=192$

$896-56x-64x+4x^{2} =192$

$4x^{2}-120x+704=0$

Simplify

$x^{2}-30x+176=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}-30x+176=0$

$a=1\\b=-30\\c=176$

substitute in the formula

$x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}$

$x=\frac{30(+/-)\sqrt{196}} {2}$

$x=\frac{30(+/-)14} {2}$

$x=\frac{30+14} {2}=22\ cm$ ----> this solution is not logic

$x=\frac{30-14} {2}=8\ cm$

The width of the frame is equal to $8\ cm$

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Answer:

Step-by-step explanation:

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2 years ago

How many centimeters are in 5 inches? 1in. = 2.54 cm<br><br> 5 in. = ?

Aleks [24]

It is very simple the answer is 12.7 cm
You can simply multiply 5 with 2.54 to get the answer
Hope it helps : )

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