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Tatiana [17]
3 years ago
12

The sides of a triangle are x, x+7, and 2x-8. If the perimeter of the triangle is 47, what is x

Mathematics
1 answer:
kirza4 [7]3 years ago
8 0

just like the previous one, we sum the sides to get the perimeter.


\bf (x)+(x+7)+(2x-8)=47\implies 4x-1=47\implies 4x=48\\\\\\x=\cfrac{48}{4}\implies x=12

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Answer:

  20%

Step-by-step explanation:

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8 0
3 years ago
When two equal signs is placed between two algebraic expressions a what is formed
Vikki [24]

If we have two sides equal each other, then we called the statement "equation"

Example:

2x + 3 = 5x - 2 is called an equation

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4 0
1 year ago
Help please
Len [333]

Answer:

Ques 1)  1440°

Ques 2) 4000

Ques 3) 33

Step-by-step explanation:

Ques 1)

The sum of the measures of the angles in degrees of a polygon with 'n' sides is given by: 180×(n - 2).

Now we have to find the sum of the measures the angles of a polygon with 10 sides.

i.e. n=10

Hence the value of the expression 180×(n-2) when n=10 is given by:

180×(10-2)=180×8=1440.

Hence, the sum of measure of the angles of a polygon with 10 sides is: 1440°.

Ques 2)

The Expression 500v gives the number of points a player earns for completing v voyages in video game.

We are asked to find the number of points earned for completing 8 voyages.

i.e. v=8 the value of 500v will be 500×8=4000.

Hence, 4000 points are earned for completing 8 voyages.

Ques 3)

we have to find the value of the question as given in the figure:

7x+y+16 for x=2 and y=3.

Hence, we find the value of the expression:

7×2+3+16=33.

Hence, the value of the expression is 33.




8 0
3 years ago
Use the distributive property to write an expression that is equivalent to 1/2 (8y + (-x) + 12)
melomori [17]

Algebra

\frac{1}{2} (8y - x + 12) = a

Divide everything by two, or times everything by 1/2.

4y -  \frac{1}{2} x + 6 = a

This is as far as you could go due to no like-terms.

3 0
3 years ago
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