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weeeeeb [17]
3 years ago
6

Solve 2x - 8 < 7. A {x | x < 1/2} B {x | x > 1/2}C {x | x < 15/2}D {x | x > 15/2}

Mathematics
1 answer:
sweet [91]3 years ago
6 0

Answer:

c x<15/2

Step-by-step explanation:

first you write your equation

then you add 8 to the right of the equation

then you divide 2x on both sides of the equation

then you will get you answer

then you graph your answer

when you graph it you will have a open circle

then last you will draw a line going left.

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Can someone please help on number 20? WILL MARK YOU AS BRAINIEST. (can you also show how you do the problem?) :(
PSYCHO15rus [73]

Answer:

x =(22-√196)/6=(11-7)/3= 1.333

Step-by-step explanation:

(3x2 -  22x) +  24  = 0

The first term is,  3x2  its coefficient is  3 .

The middle term is,  -22x  its coefficient is  -22 .

The last term, "the constant", is  +24

Step-1 : Multiply the coefficient of the first term by the constant   3 • 24 = 72

Step-2 : Find two factors of  72  whose sum equals the coefficient of the middle term, which is   -22 .

     -72    +    -1    =    -73

     -36    +    -2    =    -38

     -24    +    -3    =    -27

     -18    +    -4    =    -22    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -18  and  -4

                    3x2 - 18x - 4x - 24

Step-4 : Add up the first 2 terms, pulling out like factors :

                   3x • (x-6)

             Add up the last 2 terms, pulling out common factors :

                   4 • (x-6)

Step-5 : Add up the four terms of step 4 :

                   (3x-4)  •  (x-6)

            Which is the desired factorization

Equation at the end of step 2:

 (x - 6) • (3x - 4)  = 0

STEP 3:

Theory - Roots of a product

3.1    A product of several terms equals zero.

When a product of two or more terms equals zero, then at least one of the terms must be zero.

We shall now solve each term = 0 separately

In other words, we are going to solve as many equations as there are terms in the product

Any solution of term = 0 solves product = 0 as well.

5 0
3 years ago
2 PART QUESTION!!
Llana [10]
Last answer for the first question and in not sure about the second one
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3 years ago
Find the area of a room that is 28 feet long and 46 feet wide?
Oxana [17]

Answer:

A =1288 ft^2

Step-by-step explanation:

A = l*w

A = 28*46

A =1288 ft^2

8 0
3 years ago
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Which of the following is a radical equation?<br> X+ V5 = 12<br> x² = 16<br> 3+ x^7=13<br> 7-14
MrRissso [65]
The second one is the correct answer
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A carnival game has 3 identical boxes. The boxes have the following amounts of money: one has $30.00, one has $6.00, and one has
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$200 divided by 100 customers = 2$.

So, if he wants to make a profit of $200, he would have to make each customer pay $2.   :)

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