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vladimir1956 [14]
2 years ago
13

1. 3x + 9 = 12x + 36 x=

Mathematics
1 answer:
kozerog [31]2 years ago
7 0

Answer:

x = -3

Step-by-step explanation:

3x + 9 = 12x + 36 (rewrite)

3x - 12x + 9 = 36 ------> 3x - 12x = 36 - 9

3x - 12x = 36 - 9 (collect like terms)

-9x = 36 - 9 ( substract)

-9x = 27 (divide both sides for the answer)

-9       -9

x = -3

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Rational expression. simplify<br> 36m-48m over 6m.
ladessa [460]
One way is to find common factors

example

8/6=4/3 because 8/6, 8 and 6 have common factor of 2 so divide that out to get 4/3
basically divide the LCM from each

so factor

we can combine 36m-48m into -12m
we have
-12m/6m

common factor is 6m
-12m/6m=(-2)/1 times (6m)/(6m)=-2 times 1=-2

answer is -2
3 0
2 years ago
Find the midpoint of a and b when a has coordinates (-5,3) and b has coordinates (3,-1)
azamat
To find the x coordinate of the midpoint, add the x coordinates and divide by 2
(-5+3)/2 = -2/2 = -1
To find the y coordinate of the midpoint, add the y coordinates and divide by 2
(3+-1)/2 = 2/2 = 1
(-1,1)
6 0
2 years ago
Read 2 more answers
The number sentence 4x6=6x4 is an example of the what property
monitta

Answer:

commutative property of multiplication

Step-by-step explanation:

The value of the product of the given equation remain the same while the order is reversed

The number sequence 4 × 6 = 6 × 4 is an example of the commutative property of multiplication

Reason:

The given number sentence is 4 × 6 = 6 × 4

Required: The property the number sentence is an example of (represent)

Solution:

The difference between the left and right expression is that the order of the

values being multiplied is changed or reversed (commute)

Therefore, the number sentence states that the value of the multiplication

of two variables remain equal when the places of variables are

interchanged as follows; a × b = b × a

a × b = b × a is an example of commutative property of multiplication

Therefore;

4 × 6 = 6 × 4 is an example of the commutative property of multiplication

5 0
2 years ago
Jane needs $20 to buy her radio. She has saved $15.
KonstantinChe [14]

Answer:

the answer is d

Step-by-step explanation:

\frac{15}{20}  \times 100 = 75

7 0
2 years ago
Read 2 more answers
80 marked up by 37.5 percent
Mariana [72]
Make 37.5% into decimal form : Since it is being marked up, add 100% = 1.375
1.375 x 80
     1.375
     x  80
_________
    0000
+11000
_________
  110.000

80 marked up by 37.5% is 110.
7 0
3 years ago
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