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Inessa [10]
3 years ago
5

2a +5 - 3a -12 please

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
7 0

Answer:

-7-a

Step-by-step explanation:

2a-3a +5-12

-a - 7

or -7-a

Nastasia [14]3 years ago
3 0

Answer:

-a - 7

Step-by-step explanation:

Add like terms to simplify the expression:

2a + 5 - 3a - 12

Add together 2a and -3a:

2a - 3a = -a

Add together 5 and -12:

5 - 12 = -7

Add these together:

-a - 7

So, the simplified expression is -a - 7

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Standard form of the equation that goes through (3, -1) with a slope of -1, please!
11111nata11111 [884]

Answer:

x+y=2

Step-by-step explanation:

Standard Form: ax+by=c

For most convenience start with slope-intercept form: y=mx+b

1. -1 = -1(3)+b -  solve for b

b=2

y= -1x+2 (slope-intercept form)

2. Now convert to standard form

Add 1x to both sides:

1x+y=2

7 0
2 years ago
2.1 in a decimal form
Allisa [31]

2.1 is already in a decimal form.

Hope I helped!

7 0
3 years ago
A triangle has the area of 1/2(4x^2+29x+30)ft^2. If the base of the triangle is (x+6) ft, find the height of the triangle.
Paul [167]

Answer:

4x+5 ft

Step-by-step explanation:

1/2(4x²+29x+30) = 1/2 (x+6) * Height

Height = (4x²+29x+30) / (x+6) = (x+6) (4x+5) / (x+6) = 4x+5

3 0
3 years ago
What are the answer for your these questions?
ozzi

Answer:

<u>a. 11</u>

<u>b. 9</u>

Step-by-step explanation:

<em>A:</em>

2 x 4 = 8

8 + 3 = 11

<em>B:</em>

-2 x -2 = 4

4 + 5 = 9

Hope this helps! Let me know if it was right!

5 0
2 years ago
How many lines of symmetry does a regular polygon with 16 sides have? A. 2 B. 8 C. 32 D. 16
denpristay [2]

Answer:

C. 32

Step-by-step explanation:

There are 16 lines of symmetry passing through the vertex's and another 16 passing through the mid points of the sides

8 0
3 years ago
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