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ludmilkaskok [199]
3 years ago
14

Which equation has no solution?

Mathematics
2 answers:
Alex3 years ago
4 0

Answer:

  • B. the absolute value of 5 minus 3 x equals negative 8

Step-by-step explanation:

The absolute value is never negative as per definition.

  • A. |2x - 1| = 0, has solution
  • B. |5 - 3x| = - 8, no solution
  • C. |-x - 3| = 5, has solution
  • D. |-x + 9| = 0, has solution

Correct choice is B

Aleonysh [2.5K]3 years ago
4 0

<u>Given </u><u>:</u><u>-</u><u> </u>

  • the absolute value of 2 x minus 1 equals 0
  • the absolute value of 5 minus 3 x equals negative 8
  • the absolute value of negative x minus 3 equals 5
  • the absolute value of negative x plus 9 equals 0

<u>To </u><u>find</u><u> </u><u>:</u><u>-</u><u> </u>

  • Which of the equation has no solution .

<u>Answer</u><u> </u><u>:</u><u>-</u>

Convert the given statement from word form to mathematical form ,

  • | 2x - 1| = 0
  • | 5 - 3x | = -8
  • | -x-3 | = 5
  • | - x + 9| = 9

As we know that the <u>modulus</u><u> </u><u>function</u><u> </u><u>always</u><u> </u><u>gives </u><u>positive</u><u> </u><u>values</u><u> </u>. So from the given options we can see that |5-3x| = -8 , which is not possible .

<u>Hence </u><u>|</u><u> </u><u>5</u><u>-</u><u>3</u><u>x</u><u> </u><u>|</u><u> </u><u>=</u><u> </u><u>-</u><u>8</u><u> </u><u>has </u><u>no </u><u>solutions </u><u>.</u>

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4 0
3 years ago
Solve the equation for x: 3x – 2c = 5
valkas [14]

Answer:

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x=<u>5</u><u>-</u><u>2</u><u>c</u>

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5 0
4 years ago
I need help I never got taught how to do this
ludmilkaskok [199]

Answer:

736cm²

Step-by-step explanation:

The surface area of a regular pyramid is equal to:

area of the square base + 1/2ps

where p is the perimeter of the base and

s is the height of the slant line of the pyramid.

In your drawing s = 15cm and the base has four equal lengths of 16cm

So first find the area of the base.  Since this is a square, the area is just the

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(p) is the perimeter of the base.  Find this by adding all four side of the bottom square together which is 16cm + 16cm + 16cm + 16cm  or  4 x 16cm which is 64cm.

You already were given (s) which is the height of the slanted side from the base to the pointed top.  The drawing gives you this as 15cm.

So plugging all this into the formula, you get:

Surface Area = Area of Base + 1/2 p s

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                      =  256 cm²  +  {1/2 ( 960 cm²)]

                      =  256 cm²  +  480 cm²

                      =  736 cm²

8 0
3 years ago
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