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drek231 [11]
3 years ago
5

-5(a-6)+ 2a Help me with this equation pleaseee asap

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

-5(a - 6) + 2a = -5*a -6 * (-5)  + 2a  

                     = -5a + 30 + 2a   {Add/ subtract like terms}

                    = -5a + 2a + 30

                     = -3a + 30

Ne4ueva [31]3 years ago
6 0

Answer:

-3a+30

Step-by-step explanation:

-5a+30+2a.

-5a+2a=-3a

-3a+30

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vladimir2022 [97]

Answer:

Explanation: As you make the segments smaller and smaller, the parallelogram becomes more of a rectangle with shorter side equal to the radius of the circle r and longer side πr - half of the circumference of the circle. Hence we get the formula πr2 for the area of a circle of radius r .

Step-by-step explanation:

4 0
2 years ago
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The area of two similar triangles are 50dm^2 and 32dm^2. The sum of their perimeters is 117dm. What us the perimeters of each of
Kay [80]

Answer:

Perimeter of one triangle is 65 dm

Perimeter of other triangle is 52 dm

Step-by-step explanation:

Please remember the concept

If sides are in the ratio of a:b

Then the area in the ratio of a^{2} :b^{2}

It is given sum of their perimeter is 117.

Let the small triangle has perimeter as x.

So, perimeter of big triangle is 117-x.

So, we can set up equation as

\frac{50}{32} =\frac{x^{2} }{(117-x)^{2} }

Cross multiply

50(117-x)^2 =32x^2

Expand the left side

50(13689 -234x+x^{2} )=32x^{2}

Distribute the left side

684450-11700x+50x^{2}=32x^{2}

Subtract both sides 32x^{2} and rewrite it 18x^{2} -11700x+684450=0

Solve this quadratic for x.

Divide both sides of the equation by 18 to simplify.

x^{2}-650 x+38025=0

Now, if possible let's factor

Find two integers whose multiplication is 38025 but adds to -650.

-65 and -585 works.

So, we can rewrite it as

(x -65)(x-585) =0

Solve them using zero product property

x=65, x=585

So, x=65 works here.

So, perimeter of one triangle is 65 dm

Perimeter of other triangle is 117-65= 52 dm

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3 years ago
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nydimaria [60]

Answer:

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Step-by-step explanation:

The answer would be 17 because if you add 12 plus 5 That would be your answer

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dybincka [34]

Answer:

Below.

Step-by-step explanation:

If its a right triangle it will obey the Pythagoras theorem.

17^2 = 289

11^2 + 15^2 = 121 + 225  = 346

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