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wel
3 years ago
11

Nine more than 3 times a number is the same as 6 less than twice the number

Mathematics
1 answer:
Ludmilka [50]3 years ago
7 0

Answer:

Step-by-step explanation:

Let the number  = x

3x + 9 = 2x - 6  Looks like you are going to get something negative here.

Subtract 2x from both sides.

3x - 2x + 9 = 2x - 2x - 6

x + 9 = -6    

Subtract 9 from both sides.

x + 9 - 9 = - 6 - 9

Combine

x = - 15

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20+20+20+20+20+10+5+5
Vaselesa [24]

the answer to this equation is 120

4 0
3 years ago
Read 2 more answers
If each exterior angle of a regular polygon measures 15°, how many sides does the polygon have?
Yuri [45]

Answer:

24

Step-by-step explanation:

The sum of the exterior angles of a polygon = 360°

Divide this by the size of 1 exterior angle to find number of sides, that is

number of sides = \frac{360}{15} = 24

4 0
3 years ago
Read 2 more answers
Plz I need this thank you this is for 100 points luv u
Verizon [17]

Answer:

a. 120

b. -120

c. -120

d. -120

e. 120

Step-by-step explanation:

The amount of - will influence whether the value is positive or negative. Odd number of - is always negative. Even number of - is always positive. Hope this helped :)

8 0
3 years ago
I need help on questions 9, 10, and 11 please!
bulgar [2K]
In general, to find the surface area of a prism (a shape with 2 bases) is 
Area of Base*2 + Lateral Area (Lateral area = Perimeter of bases * height)

#9 Area of base= 2×1÷2=1 *2=2
Lateral area= 2+1+2.2=5.2 5.2*3=15.6
Answer=17.6
#10 Area of Base= 120*2=240
Lateral Area=500
Answer=740
#11
Area of base=8*2=16
Lateral Area= 41.4
Answer=57.4

8 0
4 years ago
Please can anyone help me​
Helen [10]

Answer:

Step-by-step explanation:

plug all those x values into the equation to get y

8, 7, 6, 5, 4, 3

and now graph

-2,8

-1,7

0,6

1,5

2,4

3,6

6 0
3 years ago
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