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3 years ago

Solve the inequality -1>-2(x-4)-5(4x-7)

Mathematics

2 answers:

Vadim26 [7]3 years ago

5 0

Answer:

x>2

Step-by-step explanation:

-1>-2(x-4)-5(4x-7)

opening brackets

-1>-2x+8-20x+35

-1>-2x-20x+8+35

-1>-22x+43

-1-43>-22x

-44>-22x

by canceling the sign of minus we change the sign of inequality

44<22x

x>2

i hope it will help you

g100num [7]3 years ago

4 0

Answer:

Inequality Form - x>2

Interval Notation - (2,∞ )

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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Answer:

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Step-by-step explanation:

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HELP PLZ PICK ONE OF THE ONES SHOWN:

defon

I am doing with Question Number 2

Let the two numbers be 'x' and 'y'.

According to the question, the product of two numbers is 14.

$x \times y=14$

So, xy=14 (Equation 1)

Now, one of the numbers is 3 ½ times the other.

So, $x = 3\frac{1}{2}\times y$

$x=\frac{7}{2}y$ (Equation 2)

Substituting the value of 'x' from equation 2 in equation 1, we get

$\frac{7}{2}y \times y = 14$

$\frac{7}{2}y^{2} = 14$

$y^{2} = 4$

So, y= 2 and -2

So, $x=\frac{14}{2}$ and $x=\frac{14}{-2}$

x=7 and -7

Numbers are 2,7 and -2,-7.

Sum of numbers 2 and 7 = 9

Sum of numbers -2 and -7 = -9.

6 0

3 years ago