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yanalaym [24]
3 years ago
15

For what values of n is the sum (−27.1+3n)+(7.1+5n) negative?

Mathematics
2 answers:
EastWind [94]3 years ago
7 0

Answer:2

Step-by-step explanation:

Solve for n

Group like terms

3n+5n-27.1+7.1

8n-20=0

8n=20

n=20/8

n=5/2

For the sum to be negative n has to be greater than 5/2

And 2 is the solution

astraxan [27]3 years ago
3 0

Answer: n = 0 to 2

n = - infinity to -1

Step-by-step explanation:

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SHOW YOUR WORK! Marking the best response with brainliest:) thank u
sdas [7]

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

where

l is the length

w is the width

From the question

The length is 3x + 7

The width is 2x + 2

The perimeter is

<h3>2( 3x + 7) + 2( 2x + 2)</h3>

Simplify

6x + 7 + 4x + 4

Group like terms

6x + 4x + 7 + 4

We have the final answer as

<h3>10x + 11</h3>

Hope this helps you

6 0
3 years ago
Complete the point slope equation of the line through (-5, 7) and (-4, 0).​
IgorLugansk [536]

For this case we have that by definition, the point-slope equation of a line is given by:

y = mx + b

Where:

m: It's the slope

b: It is the cut-off point with the y axis

We have two points:

(x_ {1}, y_ {1}): (- 5,7)\\(x_ {2}, y_ {2}): (- 4,0)

We found the slope:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} =  \frac {0-7} {- 4 - (- 5)} = \frac {-7} {-4 + 5} = \frac {-7} {1} = - 7

Thus, the equation is of the form:

y = -7x + b

We substitute one of the points and find "b":

0 = -7 (-4) + b\\0 = 28 + b\\b = -28

Finally, the equation is:

y = -7x-28

Answer:

y = -7x-28

5 0
3 years ago
Simplify: √27 A. 3√3 B. 9√3 C. 3√9 D. 5√3
blagie [28]
To simplify square root 27, find two numbers that equal 27. But also, one of the numbers should be a perfect square (such as 4, 9, 36...). 

9*3=27. The square root of 9 is 3, which makes it a perfect square. So, the answer is A.
5 0
3 years ago
2 more i will give Brainliest
bezimeni [28]
1 and 1/2 is the scale factor
4 0
3 years ago
Read 2 more answers
Help?What is the value of s? ____ units
arsen [322]

Answer:

  s = 17 units

Step-by-step explanation:

The Pythagorean theorem applies:

  8^2 + 15^2 = s^2

  64 + 225 = s^2

  289 = s^2

  √289 = 17 = s

The value of s is 17 units.

3 0
3 years ago
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