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zzz [600]
2 years ago
12

10 POINTS!!

Mathematics
2 answers:
bagirrra123 [75]2 years ago
6 0

Answer: I believe that you wrote it wrong because options a and d are the same thing. The answer is -4x + 2 = 9


Step-by-step explanation:

The word "sum" is used to indicate addition, and "is" is used for equals, so it would be -4x + 2 = 9.

Effectus [21]2 years ago
5 0
-4x+2=9 is the answer. Hope this helps.
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Which graphs represents this system of inequalities?
MAVERICK [17]

Answer:

  • by using desmos graphing.....
5 0
2 years ago
What are the answers to these i put them in the picture
tekilochka [14]
The problem to number 1 is a inequality, so
x-2<-7
x<-5
since it is < it will have open dot.
Answer:  C

2.  x/3>-3
      x>-9

Answer: D

3.  5p+26<72
                5p<46
                 p<9.2

Answer: C

4.  -3w+3>=18
      -3w>=15
       x<=-5

5. 15x-21>= 12x+18
        x>=13
Answer A

6:  |3x|=15
Absolute values positive so {-5,5}
Answer: B
7: |2x-3|=5
    x=4,-1
Answer:  C
8 0
3 years ago
Use the commutative and associative properties as needed to simplify the expression.<br>(16+a)+15​
Serjik [45]

Answer:The expression can be simplified in following steps;

Step-by-step explanation:

(16+a)+15=0

16+15+a=0

31+a=0

a=-31

8 0
3 years ago
14. The area of a rectangle is 375 square inches and it’s perimeter is 80 inches. Find both the length and width.
Pavel [41]

Answer:

Length  =25 inches

Width = 15 inches

Step-by-step explanation:

Let l = length of rectangle, w = width of rectangle

Given the area and the perimeter of the rectangle, we can write:

lw = 375

2l+2w=80

So:

l+w = 80\div2

=40

l=40-w

Now, we can use substitution to find the value of w:

lw = 375

(40-w)w = 375

40w-w^2 = 375

375+w^2-40w = 0 (Quadratic equation)

(w-15)(w-25) = 0

∴ w = 15, 25

We can use substitution again to find the value of l

lw = 375

l=375\div w

=25,15

∵ Length usually refers to the longer side of a rectangle, ∴ length =25 inches and width =15 inches.

Hope this helps :)

8 0
2 years ago
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
timurjin [86]

Answer:

$13,629.44

Step-by-step explanation:

Value of car after 3 years is:

V = $20,000(1.00-0.12)^3, or

      $20,000(0.88)^3 = $13,629.44

5 0
3 years ago
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