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Schach [20]
3 years ago
10

What is the measure of abd

Mathematics
2 answers:
11111nata11111 [884]3 years ago
8 0
Without figure its not possible. What does this D come from? is it a triangle or quadrilateral or exterior angle? Furnish this information then only it can be solved. 
<span>I guess, it is sum of 2 angles. If that is right, 2x + 5x = 91 or 7x =91 or x =13 so 2x = 26. Does that work? </span>
<span>Second is same type I guess! </span>
<span>2x-1 + 5x +2 = 57. So 7x = 56, x = 8. So DBC = 42. </span>
AlekseyPX3 years ago
7 0
BEC is 90 degrees.  EBC is 53 degrees. 

A triangle has 180 degrees.

ECB = 180 - 90 - 53 = 180 - 143 = 37 degrees
37 degrees is also equal to ECB since EAB = ECB.
AEB is 90 degrees because a line is 180 degrees and BEC is 90 degrees, and 180-90 = 90.

Once again, a triangle is 180 degrees, so:
 ABD = 180 - 90 - 37  
ABD = 180 - 127
ABD = 53 degrees



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the ratio would be as follows

40:16

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5:2

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Jim has only dimes and nickels in his coin bank. He has 37 coins with a total value of $2.65.
guajiro [1.7K]

Answer:

21

Step-by-step explanation:

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x+y = 37

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0.10x+0.05y = 2.65

This gives us the system

\left \{ {{x+y=37} \atop {0.10x+0.05y=2.65}} \right.

To solve this, we will use substitution.  We will isolate x in the first equation:

x+y=37

Subtract y from each side:

x+y-y = 37-y

x = 37-y

Substitute this into the second equation:

0.10(37-y)+0.05y = 2.65

Using the distributive property,

0.10(37)-0.10(y)+0.05y = 2.65

3.70-0.10y+0.05y = 2.65

Combining like terms,

3.70-0.05y = 2.65

Subtract 3.70 from each side,

3.70-0.05y-3.70 = 2.65-3.70

-0.05y = -1.05

Divide both sides by -0.05:

-0.05y/-0.05 = -1.05/-0.05

y = 21

There were 21 nickels.

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3 years ago
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If you save $700 and earn $3 interest for every $100, how much money will you have in all?
Margaret [11]

Answer:

721

Step-by-step explanation

700 divided by 100 is 7.

So you have 7 hundred and 7 times 3 is 21.

700+21=721

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