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jeyben [28]
2 years ago
10

Which one of these is the identity for addition? (A) -1 (B) 0 (C) 1

Mathematics
1 answer:
Blababa [14]2 years ago
3 0

Answer:

c

Step-by-step explanation:

because 1 is also know as +1

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Gnoma [55]
Valid because 3 x 3 is 9 :))
3 0
2 years ago
If these triangles are similar,name the missing angles, (25 points )​
Ira Lisetskai [31]

Answer:

170

Step-by-step explanation:

4 0
3 years ago
What is the value of the expression (−2 4/5)÷(−1.4)
AysviL [449]

Answer:

2

Step-by-step explanation:

3 0
3 years ago
Find x and y so that the quadrilateral is a parallelogram.
sergiy2304 [10]

Answer:

Result:

  • The value of x = 12
  • The value of y = 21

Step-by-step explanation:

Given

The parallelogram DEFG

DE = 6x-12

FG = 2x+36

EF = 4y

DG = 6y-42

We know that the opposite sides of a parallelogram are equal.  

As DE and FG are opposite sides, so

DE = FG

substituting DE = 6x-12 and FG = 2x+36 in the equation

6x-12 = 2x+36

6x-2x = 36+12

simplifying

4x = 48

dividing both sides by 4

4x/4 = 48/4

x = 12

Therefore,

The value of x = 12

Also, EF and DG are opposite sides, so

EF = DG

substituting EF = 4y and DG = 6y-42 in the equation

4y = 6y-42

switching sides

6y-42 = 4y

6y-4y = 42

2y = 42

dividing both sides by 2

2y/2 = 42/2

y = 21

Therefore,

The value of y = 21

Result:

  • The value of x = 12
  • The value of y = 21
3 0
2 years ago
The volume of a cylinder is 770 cm. It's height is 5 cm. Find its approximate radius.
Alinara [238K]

Hey there,

The equation for the volume of a cylinder is V = πr²h.

The first step into finding the radius is to plug in what you already know into the equation:

  • 770 = πr²5

We divide both sides by 5:

  • 154 = πr²

Now we divide both sides by π:

  • 49.0197224723 = r²

Finally we just do the square root of 49.0197224723:

  • 7.0014086063 = r

The radius therefore would be about 7cm.

Hope I helped,

Amna

3 0
3 years ago
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