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Fittoniya [83]
3 years ago
9

Which is a correct first step in solving 5 - 2x < 8x- 3?

Mathematics
1 answer:
aliina [53]3 years ago
6 0

Answer:

5 < 10x - 3

Step-by-step explanation:

Given:

The given inequality is:

5 - 2x < 8x- 3

The given inequality has variable 'x' on both sides of the inequality.

In order to solve such inequalities, we bring the variables on the same side as the first step in solving for 'x'.

Therefore, we could either add 2x on both sides or add -8x both sides to bring the variable terms on same side.

If we add 2x both sides, we get:

5 - 2x +2x< 8x+2x - 3\\5

So, among all the given options, third option matches the above inequality.

Therefore, the first step in solving the given inequality is 5 < 10x - 3

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2 years ago
Twenty students are members of the school debate team. Five
harkovskaia [24]

Answer:

75%

Step-by-step explanation:

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8 0
2 years ago
-8x^2+4x+5=0 using quadratic formula
daser333 [38]
So you want to solve for x?

It would be nice if this would easily factor:
(-4x + 5)(2x +1)  = 0    This will not work!

So you need to use the quadratic formula:
a = -8, b = 4, c = 5

x = \frac{-b+/-  \sqrt{b^{2}-4ac} }{2a}

x = (-4 +/- \sqrt{16-4(-8)(5)})/2(-8)
   = (-4 +/- \sqrt{16 + 160})/-16
   = (-4 +\sqrt{176})/-16
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6 0
2 years ago
HELP ME PLEASE I REALLY NEED THE HELP​
dedylja [7]

Answer:

Answer = 126 square inches

Step-by-step explanation:

Square area formula is Area = s^2    (replace the s with the side length)

Square area -->  Area = 4^2       Area = 16in

Parallelogram area formula is Area = h * b (replace h with height length and replace b with base length)

Parallelogram area --> Area = 3.5 * 10     Area = 35

Rectangle area formula is Area = w * h    (replace width and height)

Rectangle area --> Area = 12.5 * 6    Area = 75

Then add them all up  75 + 35 + 16 = 126 square inches

3 0
3 years ago
3xz(9xy+z)-2yz(x+y-z)
Alisiya [41]

Answer:  27x²yz + 3xz² - 2xy - 2y²z + 2yz²  

<u>Step-by-step explanation:</u>

Use the distributive property.

   3xz(9xy + z)           - 2yz(x + y - z)

= 3xz(9xy)  +  3xz(z)  -2yz(x)   -2yz(y)   -2yz(-z)

=  27x²yz   +   3xz²    -2xy       -2y²z      +2yz²  

3 0
2 years ago
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