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Leya [2.2K]
3 years ago
5

Please helppppppppppppppppppppppppppppp

Mathematics
1 answer:
Jobisdone [24]3 years ago
5 0

Answer:

54

Step-by-step explanation:

angle A+angle B+Angle C =180 degree [ angle sum property of a triangle]

36 +90 + angle B =180 degree

126 +angle B =180 degree

angle B= 180-126

54 degree

Ans

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Find the indicated products.<br> (3x-5)(3x+5)
frutty [35]
9x²- 25


3x(3x) = 9x²
3x(5) = 15x
-5(3x) = -15x
-5(5) = -25
9x² + 15x - 15x - 25
9x² - 25 is your answer

hope this helps
8 0
3 years ago
Read 2 more answers
Select the best answer for the question
kozerog [31]
X=9 this is the answer for question 19

6 0
3 years ago
Find a in the figure below and place the value in the empty box
AleksAgata [21]

Answer:

a = 12m

Step-by-step explanation:

In order to solve this problem we will need to know the Pythagoras theorem that states that in a right angled triangle the square of the hypotenuse (the side opposite to the right angel) is equal to  the sum of the squares of the other two sides. This theorem can be written as an equation....

c^{2} = a^{2}  + b^{2}

Now we can see that we can easily find the missing value by using this theorem. We just have to substitute the values. And we get the following

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a^{2} = 15^{2} - 9^{2}

a^{2} = 225 - 81

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a = \sqrt{144}

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7 0
3 years ago
What is the value of 7(10 - 2^3) + 8 divided by 2
Zielflug [23.3K]

7(10-2^3)+8 \div 2 \\ \\ 7(10-8)+8 \div 2 \\ \\ 7(2)+8 \div 2 \\ \\ 7(2)+4 \\ \\ 14+4 \\ \\ \boxed{18}

5 0
2 years ago
Add 280.00 +21.40 +6.30 +.41 = 308.71, I don't know where the 7 was added though
Vitek1552 [10]
I m getting 308.11, there is an additional 0.60 that is added, maybe your source is wrong, or there is a copying error.
8 0
3 years ago
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