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9966 [12]
3 years ago
7

I NEED HELP FASTT!!! PLEASE

Mathematics
2 answers:
MaRussiya [10]3 years ago
6 0

Steps for solving:

Start by putting your x's together on the left side of the inequality by subtracting 2x from both sides to give you 6x - 6 > 12.

Next, put your numbers together on the right by

adding 6 to both sides and we have 6x > 18.

Divide both sides by 6 and <em>x > 3</em>.

I have also graphed x > 3 for you on a number line.

Just start with an open dot at 3 and we use an open dot because x > 3 but it is not equal to 3 and then we draw an arrow to the right on our number line to represent all numbers greater than 3.

Finally, you can write your answer

in set notation which is {x : x > 3}.

All this means is that if we take any number greater than 3 and plug it back in for <em>x</em> in our original problem, we will get a true statement.

In this problem, 5 is the only value that would make this inequality true because it's greater than 3.

AysviL [449]3 years ago
4 0

Answer:

5

Step-by-step explanation:

8x - 6 > 12 + 2x

Subtract 2x from each

8x -2x -6 > 12+2x-2x

6x -6 > 12

Add 6 to each side

6x -6+6 > 12+6

6x > 18

Divide by 6

6x/6 > 18/6

x > 3

The only value greater than 3 is 5

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A ball has been thrown into the air its distance from the ground is given by the function s(t)=-16t^2+96t+100
slega [8]

Answer:

For t=3 sec the velocity change from positive to negative

Step-by-step explanation:

we have

s(t)=-16t^2+96t+100

This is the equation of a vertical parabola open downward (the leading coefficient is negative)

where

s(t) is the distance in feet

t is the time in seconds

We know that

To find out when the velocity change from positive to negative, we need to determine the turning point of the quadratic equation

The turning point of the quadratic equation is the vertex

so

Convert the quadratic equation into vertex form

s(t)=-16t^2+96t+100

Factor -16

s(t)=-16(t^2-6t)+100

Complete the square

s(t)=-16(t^2-6t+9)+100+144

s(t)=-16(t^2-6t+9)+244

Rewrite as perfect squares

s(t)=-16(t-3)^2+244

The vertex is the point (3,244)

therefore

For t=3 sec the velocity change from positive to negative

8 0
3 years ago
Which expression is equivalent to 4x + 6y - 8x?
zhannawk [14.2K]

Step-by-step explanation:

The expression is 6y - 4x

1) 6y - 4x

2) 8y - 4x

3) 4x + 6y

4) 6x - 4y

The correct answer is option 1

7 0
3 years ago
2x + 3y = 17<br> 5x + 6y = 32<br><br> Usibg method if elimination
lions [1.4K]

Answer:

Solution (-2, 7)

Step-by-step explanation:

2x + 3y = 17      (1)

5x + 6y = 32    (2)

Using elimination method

Multiply (-2) to the equation (1)

-4x - 6y = -34  

Now you have 2 new equations

-4x - 6y = -34

5x + 6y = 32

----------------------------Add

x = -2

Substitute x = -2 into 2x + 3y = 17

2(-2) + 3y = 17

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Solution (-2, 7)

6 0
3 years ago
Simplify 6*3+4+2*3(15)+*2
Angelina_Jolie [31]

Answer:

114.

Step-by-step explanation:

  1. remove parenthesis
  2. multiply the numbers 6 x 3 + 18

18 + 4 + 2 x 3 x 15 + 2

multiply the numbers 2 x 3 x 15 + 90

18 + 4 + 2 + 90 + 2

add the numbers : 18 + 4 + 2 + 90 + 2

= 114!

5 0
3 years ago
Using the right triangle below, find the cosine of angle A.
KiRa [710]

Answer:

it would be the Adjacent side (8) over the Hypotenuse, or the longest side which is 10. an easy way to remember this is CAH or Cosine=Adjacent/Hypotenuse

6 0
3 years ago
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