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Mandarinka [93]
3 years ago
13

Evaluate the expression (19+9)+(-9)

Mathematics
2 answers:
Paraphin [41]3 years ago
8 0

Solution, \left(19+9\right)+\left(-9\right)=19

Steps:

\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}

\mathrm{Calculate\:within\:parentheses}\:\left(19+9\right)\::\quad 28, =28+\left(-9\right)

\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:28+\left(-9\right)\::\quad 19, =19

The correct answer is <u><em>19</em></u>

Hope this helps!!!

Zepler [3.9K]3 years ago
4 0

19

evaluate the parenthesis, noting that + ( - ) = -

(19 + 9 ) + ( - 9) = 28 - 9 = 19



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Answer:

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Step-by-step explanation:

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a= 1

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x= -3 +/- sqrt (22)

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What is the equation of a line that has a slope of -1/2 and goes through the point (-2,4) ?
yarga [219]

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y-2=-1/2(x+2)

Step-by-step explanation:

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3 years ago
Given the formula D = ABC what is the formula for C
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IF SOMEONE COULD HELP WITH THIS IT WOULD BE MUCH APPRECIATED!
julsineya [31]

Answer:

48 Units

Step-by-step explanation:

Use the Pythagorean theorem to make two right triangles.

Ex= Base is cut in half to make two 9 unit bases

Then count the units from the half point.

Ex= 12 units long

Then use Pythagorean theorem to find one side of the 9-12 right triangle

Ex= 9^2+12^2=c^2

After finding that c=15 units, add all the sides back together

Ex= 18+15+15=48

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3 years ago
Clara is building a triangular garden. She wants the length of the longest side to be three more than twice as long as the lengt
zheka24 [161]

The garden's perimeter = 3+2s+12+s.

The simpler version of the expression = 15+3s.

The variable's frequency in the abbreviated statement is 3.

<h3>Calculation of a triangle's perimeter:</h3>

The triangle's perimeter is equivalent to the sum of its edges, where a, b, and c are its sides.

  • Let the triangle's longest edge be 'a'
  • shorter one to be 's'
  • the opposite side 'b'

With the information provided, the formula will become 'a = 3+2s'

and 'b' is also 12 ft.

Triangle perimeter =the total of its edges

= a + b + s                                                                    

= 3 + 2s + 12 + s

= 15 + 3s

As a result, the garden's perimeter = 3+2s+12+s.

Therefore,the simpler version of the formula is 15+3s.

The variable's coefficient in the abbreviated statement is 3.

Learn more about triangle perimeter:

brainly.com/question/23935199?referrer=searchResults

#SPJ10

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2 years ago
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