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Molodets [167]
3 years ago
6

Can someone please help ASAP (solving rational equations)

Mathematics
2 answers:
aivan3 [116]3 years ago
4 0
The answer is c, x=1
mart [117]3 years ago
4 0

\dfrac 1 2 = \dfrac 1 x - \dfrac{1}{2x^2}

Multiply both sides by 2x²,

x^2 = 2x - 1

x^2 - 2x + 1 = 0

(x - 1)^2 = 0

x - 1 = 0

x=1

Answer: C.   x=1

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Daniel rides his bicycle 21km west and then 18km north. How far is he from his starting point?
insens350 [35]

This is a right triangle. To find the length of the hypotenuse a^2 + b^2 = c^2.

21^2 + 18^2 = c^2

441 + 324 = c^2

765 = c^2

27.66 km

6 0
3 years ago
Someone please help me with this​
Sedbober [7]

Answer:

The area of the shaded figure is:

  • <u>20 units^2</u>

Step-by-step explanation:

To obtain the area of the shaded figure, first, you must calculate this as a rectangle, with the measurements: wide (4 units), and long (6 units):

  • Area of a rectangle = long * wide
  • Area of a rectangle = 6 * 4
  • Area of a rectangle = 24 units^2

How the figure isn't a rectangle, you must subtract the triangle on the top, so, now we calculate the area of that triangle with measurements: wide (4 units), and height (2 units):

  • Area of a triangle = \frac{wide*height}{2}
  • Area of a triangle = \frac{4*2}{2}
  • Area of a triangle =\frac{8}{2}
  • Area of a triangle = 4 units^2

In the end, you subtract the area of the triangle to the area of the rectangle, to obtain the area of the shaded figure:

  • Area of the shaded figure = Area of the rectangle - Area of the triangle
  • Area of the shaded figure = 24 units^2 - 4 units^2
  • <u>Area of the shaded figure = 20 units^2</u>

I use the name "units" because the exercise doesn't say if they are feet, inches, or another, but you can replace this in case you need it.

5 0
3 years ago
The sum of two numbers is 27. One number is 3 more than the other. Write and solve a system of equations to find the two numbers
givi [52]
X + y = 27
x = y + 3

y + 3 + y = 27
2y + 3 = 27
2y = 27 - 3
2y = 24
y = 24/2
y = 12

x = y + 3
x = 12 + 3
x = 15

ur numbers are 12 and 15
7 0
3 years ago
Read 2 more answers
PleaseeEEEE helpp!!!<br> 45 POINTS
Vaselesa [24]

Answer:1.85+x=5.30

Step-by-step explanation: ez

5 0
3 years ago
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If x+y=12 and xy=27 . find x^3+y^3<br>pls help with steps ​
Ivan

Answer:

Step-by-step explanation:

use formula

x^3+y^3=(x+y)^3-3*x*y(x+y)

=12^3-3*27(12)

=1728-972

=756

8 0
2 years ago
Read 2 more answers
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