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Nitella [24]
3 years ago
15

In the triangle below, find the value of a/// Please help!

Mathematics
1 answer:
sergiy2304 [10]3 years ago
3 0

Answer:

a= 45

Step-by-step explanation:

all angles equal 180 degrees so you take the angle given which is 45 and the other which is a right angle, or 90 degrees and subtract 45 from 90 and you get 45 so a = 45 and you add up 45 + 45 + 90 thats 180!  

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The perimeter of a rectangle is 20xm. the length is 6cm longer than the width. what are the length and width of the rectangle?
aleksley [76]
Let width be x 

length= 6+x 

p=2(l+w) 
20=2(6+x+x) 
10=2x+6 
10-6=2x 
4=2x 
x=4/2
x=2 

Therefore the width is 2 cm and length is (6+2)= 8 cm 

Hope I helped :) 
3 0
3 years ago
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Sarah hopes to be 5 feet tall by her next birthday. Right now, she is 148 centimeters tall. How many more centimeters does Sarah
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Sarah needs to grow 6 more centimeters.

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3 years ago
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What is the measurement of ∠BAC and ∠ABC? Explain your process of solving.
Paraphin [41]

Answer:

<BAC = 78

<ABC = 68

Step-by-step explanation:

The remote angles theorem states that when one extends a side of a triangle, the angle formed between the extension and one of the sides of the triangle is equal to the sum of the two non-adjacent angles inside the triangle. One can apply this theorem here and state the following,

<BAC + <ABC = <ACD

Substitute,

(5y + 3) + (4y + 8) = (146)

Simplify,

9y + 11 = 146

Inverse operations,

9y + 11 = 146

     -11     -11

9y = 135

/9      /9

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Now substitute this value back into the expressions to find the numerical measurement of (<BAC) and (<ABC),

<BAC = 5y + 3

5(15) + 3

78

<ABC = 4y + 8

4(15) + 8

68

5 0
3 years ago
What number has the same value as 50 tens
Alexandra [31]
5x100 or 1x500 is your answer
5 0
4 years ago
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Simplify the expression |12-5|-(6/2+1)^2
Zielflug [23.3K]

Answer:

-9

Alternative form:

-3^{2}

----------------------------------------------------

Steps:

1- Cross out the common factor

2- Calculate the sum or difference

3- Calculate the absolute value

4- Calculate the power

5- Calculate the sum or difference

5 0
2 years ago
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