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kompoz [17]
2 years ago
6

What Does The Number was 25 in periodic

Mathematics
1 answer:
ivann1987 [24]2 years ago
7 0

Answer:

Manganese is a metal that is atomic number 25 on the periodic table with the element symbol Mn.

Step-by-step explanation:

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How to solve 4n-40=7(-2n+2)
Damm [24]

4n-40=7(-2n+2)

4n-40=-14n+14

subtract -4n from both sides

-40 = -18n +14

subtract -14 from both sides

-54=-18n

divide both sides by -18


3 = n


3 0
3 years ago
Read 2 more answers
If a = and b = -1 what is the value of ab -b^2
svet-max [94.6K]

Answer:

-2

Step-by-step explanation:

To solve you need to replace the variables with their numbers.

3(-1) - (-1^2)

-1 x -1 = -1

3 x (-1) = -3

-3 - (-1) =

-2

8 0
3 years ago
Find the value of the variable that results in congruent triangles for numbers 6 and 8.
mariarad [96]

Answer:

x = 28

Step-by-step explanation:

From the figure attached,

AC ≅ FH [Given]

BC ≅ GH [Given]

AB ≅ FG [Given]

ΔABC ≅ ΔFGH [By SSS property of congruence]

Since, m∠A + m∠B + m∠C = 180°

50° + 69° + m∠C = 180°

119° + m∠C = 180°

m∠C = 180° - 119°

m∠C = 61°

m∠C = m∠H [Since, ΔABC ≅ ΔFGH]

(2x + 5)° = 61°

2x = 61 - 5

2x = 56

x = 28

8 0
2 years ago
What is the value of X in the trapezoid shown below?​
marysya [2.9K]
Answer: 17



Step by step : 146+2x=180
2x=34
X=17
4 0
3 years ago
The sum of 9and -16 increased by 4
LenaWriter [7]

Answer:

-3

Step-by-step explanation:

The statement is,

→ Sum of 9 and -16 increased by 4

The equation will be,

→ {9 +(-16)} + 4

→ (9 - 16) + 4

→ -7 + 4

→ [ -3 ]

Hence, the solution is -3.

7 0
2 years ago
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