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3 years ago

PLZ HELP. choices below 8th grade math. attachment below THX.

Mathematics

2 answers:

Hitman42 [59]3 years ago

5 0

$68
Y = X — 2
.................

SOVA2 [1]3 years ago

4 0

$68

~~~~~~~~~~

y= x - 2

since you subtract 2 to get with the coupon, you would just add 2 for without the coupon.

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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

The length of a hypotenuse of a 30-60-90 triangle is 4. Find the longest leg.

const2013 [10]

check the picture below.

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3 years ago

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Dan takes an airplane to visit his parents. He pays the airline a total of $450. The cost of the ticket is $315. The airline als

vredina [299]

Answer:

Step-by-step explanation:

Start with the total amount Dan paid and subtract the part of the payment that is for the ticket.

450-315=135

Assuming that all of that $135 was for luggage fees and each pound over the limit costs $15, then the question is, how many times did Dan pay $15 until he'd paid the full $135 luggage fee.

So divide $135 by $15.

135/15=9

So his luggage weighted 59 pounds, which is 9 pounds over the limit.

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2 years ago

URGENT!!<br>Find the circumference of the wheel using the formula you found in part E. (C = 2πr)

ddd [48]

Answer:

69.08

Step-by-step explanation:

first substitute the values of pi 3.14 in the formula c and r 11 inches = 2πr to find c = 2 × 3.14 × 11 inches = 69.08 inches. the circumference is

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2 years ago

Write an expression that evaluates to true if x is non-negative and y is negative?

joja [24]

Answer:

x >= 0 & y<0

x >= 0 means that x is non-negative

y<0 means that y is negative

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1 year ago