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Liula [17]
3 years ago
10

Find the product.

Mathematics
2 answers:
jeka943 years ago
5 0
144p^ - 9 :)
...................
dangina [55]3 years ago
4 0
1) (12p-3)(12p-3)
=144p^2-36p+36p+9
=144p^2+9 (-36+36=0 so it cancels out)
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The hypotenuse of a right triangle is twice the length of one of its legs. The length of the other leg is three feet. Find the l
Alinara [238K]
Use Pythagorean theorem for side1 = a, side2 =  3, and hypotenuse = 2a
    a² + b² = c²
 a² + (3)² = (2a)
  a² +  9  =  4a²
          9  =  3a²
          3  = a²
         √3 = a

side1 = a = √3 ft
side2 = 3 ft (this was given in the problem)
hypotenuse = 2a = 2√3 ft



3 0
3 years ago
Read 2 more answers
Marcel and Floyd are playing games at an arcade. Marcel has $8.25 and is only playing $0.25 games. Floyd has $9.75 and is only p
artcher [175]

Answer:

  the error is in step 2.

  0.25x was added to -0.75x with an incorrect result of +0.50x.

Step-by-step explanation:

The incorrect step is ...

  Step 2: negative 1.50 = 0.50 x

This is the result of an attempt to add 0.25x to both sides of the equation. The correct step would be ...

  -1.50 -0.25x = -0.75x . . . . . . . result from Step 1

  -1.50 -0.25x +0.25x = -0.75x +0.25x . . . . . add 0.25x to both sides

  -1.50 = -0.50x . . . . . . . . . . . . . the correct result from the addition (Step 2)

__

The correct result is ...

  x = -1.50/-0.50 = 3 . . . . . Step 3

7 0
2 years ago
Read 2 more answers
A person sold an article at a profit of 15% , if he sold it for rs.81 less , his loss would have been 12% , find the cost price
Pepsi [2]

Answer:

cp is RS 300

Step-by-step explanation:

let cp be x

sp= 115x/100 ---(when 15%gain)

sp = 88x/100------(when 12% loss

according to question

115x/100 - 88x/100 = 81

or, (115x-88x)= 8100

or, 27x = 8100

or, x= 8100/27

x = 300

hence cp is RS 300

4 0
3 years ago
Show that y=2e^(−x) cos(x)−e^(−x) sin(x) is a solution to y''+2y'+2y=0.
lara31 [8.8K]

Answer:

see below

Step-by-step explanation:

y' = -2e⁻ˣcos(x) -sin(x)2e⁻ˣ +e⁻ˣsin(x)-cos(x)e⁻ˣ = e⁻ˣ(-2cos(x)-2sin(x)+sin(x) -cos(x))

=e⁻ˣ(-3cos(x)-sin(x))

y'' = -e⁻ˣ(-3cos(x)-sin(x)) + (3sin(x)-cos(x))e⁻ˣ

y'' = e⁻ˣ[3cos(x)+sin(x) + 3sin(x)-cos(x)] = e⁻ˣ[2cos(x)+4sin(x)]

y''+2y'+2y = 0

e⁻ˣ[2cos(x)+4sin(x)] + 2[e⁻ˣ(-3cosx-sinx)] + 2[2e⁻ˣ cos(x)−e⁻ˣ sin(x)]

e⁻ˣ[2cos(x)+4sin(x)-6cos(x)-2sin(x)+4cos(x)-2sin(x)]

e⁻ˣ[-4cos(x)+2sin(x)+4cos(x)-2sin(x)]

e⁻ˣ[0cos(x)+0sin(x)] = 0

4 0
3 years ago
Read 2 more answers
I-Ready
AnnyKZ [126]

Answer:

Step-by-step explanation:

given the expresseon that relates the number of ounces y and number of pounds x as y = 16x

The equation is a directly proportionality with a Proportionality constant of 16.

Thus means that the value of y keeps increasing by a factor of 16 for any value of x.

The ordered pairs that represent the number of pounds and the number of ounces are;

If x = 3

y = 16(3) = 48

Hence (3, 16) is an ordered pair

also if x = 10

y = 16(10) = 160

Therefore (10, 160) is another ordered pair

Hence the correct ordered pairs are (3, 16) and (10, 160)

6 0
2 years ago
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