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3 years ago

9. When (2x – 3)2 is subtracted from 5x2

Mathematics

2 answers:

IceJOKER [234]3 years ago

5 0

Answer:

Step-by-step explanation:

Radda [10]3 years ago

3 0

Hope this will help u....

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A rectangular piece of metal is 25 in longer than it is wide. Squares with sides 5 in long are cut from the four corners and the

Licemer1 [7]

Answer:

The original length was 41 inches and the original width was 16 inches

Step-by-step explanation:

Let

x ----> the original length of the piece of metal

y ----> the original width of the piece of metal

we know that

When squares with sides 5 in long are cut from the four corners and the flaps are folded upward to form an open box

The dimensions of the box are

$L=(x-10)\ in\\W=(y-10)\ in\\H=5\ in$

The volume of the box is equal to

$V=(x-10)(y-10)5$

$V=930\ in^3$

$930=(x-10)(y-10)5$

simplify

$186=(x-10)(y-10)$ -----> equation A

Remember that

The piece of metal is 25 in longer than it is wide

$x=y+25$ ----> equation B

substitute equation B in equation A

$186=(y+25-10)(y-10)$

solve for y

$186=(y+15)(y-10)\\186=y^2-10y+15y-150\\y^2+5y-336=0$

Solve the quadratic equation by graphing

using a graphing tool

The solution is y=16

see the attached figure

Find the value of x

$x=16+25=41$

therefore

The original length was 41 inches and the original width was 16 inches

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3 years ago

Which diagram shows lines that must be parallel lines cut by a transversal

DochEvi [55]

The top one shows they are parallel lines because it shows angles of both lines and the transversal

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3 years ago

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Nancy’s morning routine involves getting dressed, eating breakfast, making her bed, and driving to work. Nancy spends ⅓ of the t

Lina20 [59]

26 minutes to get to work

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The table shows the relationship between r and s, where s is the independent variable.

Jlenok [28]

Answer:

Or=8-15ddjufcvnjfzzxc

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3 years ago

if 62% percent of people voted in a community of about 55,200 eligible voters how many people were registerd

solniwko [45]

62% of 55,200...turn ur percent to a decimal..." of " means multiply
0.62(55,200) = 34,224 <==

although, just because u r registered, does not mean u vote.

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3 years ago