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2 years ago

What property is demonstrated by 7+h=h+7

Mathematics

2 answers:

julia-pushkina [17]2 years ago

5 0

Answer:

commutative property

hope that helped, if yes give me brainliest and if no draw my attention by hitting the comment box.

lozanna [386]2 years ago

4 0

ejemplo7 + 2 + 8.5 – 3.5

7 + 2 + 8.5 + (−3.5)

La propiedad asociativa no aplica a las expresiones de resta. Entonces, reescribe la expresión como la suma de un número negativo.

(7 + 2) + 8.5 + (−3.5)

9 + 8.5 + (−3.5)

17.5 + (−3.5)

17.5 – 3.5 = 14

Agrupa 7 y 2, y súmalos. Luego, súmales 8.5. Finalmente, suma −3.5, que es lo mismo que restar 3.5.

Resta 3.5. La suma es 14.

7 + 2 + (8.5 + (−3.5))

7 + 2 + 5

9 + 5

Agrupa 8.5 y –3.5, y luego súmalos para obtener 5. Luego suma 7 y 2, y súmalos al 5.

La suma es 14.

Respuesta (7 + 2) + 8.5 – 3.5 = 14 y 7 + 2 + (8.5 + (−3.5))

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pychu [463]

The exact calculations:
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6 0

3 years ago

Write four solution of the equation=2x+y=7

Fantom [35]

Step-by-step explanation:

x = 1, y = 5

x = 2, y = 3

x =3, y= 1

x=4 y=-1

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3 years ago

Which fraction has the same value as 2 3<br> 8

Alik [6]

Answer:

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3 years ago

Describe lengths of three segments that could not be used to form a triangle. Segments with lengths of 5 in., 5 in., and ______

Vesna [10]

Answer:

$c = 11$

Step-by-step explanation:

Given

Let the three sides be a, b and c

Such that:

$a = b= 5$

Required

Find c such that a, b and c do not form a triangle

To do this, we make use of the following triangle inequality theorem

$a + b > c$

$a + c > b$

$b + c > a$

To get a valid triangle, the above inequalities must be true.

To get an invalid triangle, at least one must not be true.

Substitute: $a = b= 5$

$5 + 5 > c$ $===>$ $10 > c$

$5 + c > 5$ $===>$ $c > 5 - 5$ $===>$ $c > 0$

The results of the inequality is: $10 > c$ and $c > 0$

Rewrite as: $c > 0$ and $c < 10$

$0 < c < 10$

This means that, the values of c that make a valid triangle are 1 to 9 (inclusive)

Any value outside this range, cannot form a triangle

So, we can say:

$c = 11$ , since no options are given

8 0

2 years ago

Thomas is 4 years older than his brother william. in five years the sum of their age will be 24. how old is each boy?

Rasek [7]

Let William be x years old.

Thomas = (4 + x) years

In five years,

William = (x + 5) years

Thomas = 4 + x + 5 = (9 + x) years

Given, in five years sum of their ages is 24.

x + 5 + 9 + x = 24

2x + 14 = 24

2x = 24 - 14

2x = 10

x = $\frac{10}{2}$

x = 5

Hence, William is 5 years old and Thomas is 9 years old.

5 0

3 years ago