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slava [35]
3 years ago
10

In the right triangle shown, m B с 12 45 A How long is BC?

Mathematics
1 answer:
olga55 [171]3 years ago
5 0

Answer:

BC = \sqrt{12^{2} +12^{2} }=12\sqrt{2}

Step-by-step explanation:

if the triangle is ABC and have part 12

and right angle from B and have an angle 45 then the third angle is 45 too

then we have another part is 12

and the BC = \sqrt{12^{2} +12^{2} }=12\sqrt{2}

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If a =6, what is the value of 2a(3b + 5c)?
leva [86]

Answer:

<h2>36b + 60c</h2>

Step-by-step explanation:

Put a = 6 to the expression 2a(3b + 5c):

(2)(6)(3b + 5c) = 12(3b + 5c)               <em>use the distributive property</em>

= (12)(3b) + (12)(5c) = 36b + 60c

7 0
3 years ago
The track team ran a 100-meter sprint. Their times are shown in the table.
Nitella [24]

Answer:

What is the aswer?

Step-by-step explanation:

8 0
3 years ago
I NEED HELP PICTURE PROVIDED!
Sav [38]
Question 2:
The answer is 21
The two angles are vertically opposite, which makes them equal and also means we can make an equation:
4x - 4 = 3x + 17
- 3x
x - 4 = 14
+ 4
x = 21

Question 3:
The answer is 23
Again, the angles are vertically opposite, so we can make them equal each other:
5x - 53 = 3x - 7
- 3x
2x - 53 = -7
+ 53
2x = 46
÷ 2
x = 23

I hope this helps!
7 0
2 years ago
The regular price of a scooter is $65.50. It is on sale for $52.40. What is the percent decrease from the regular price to the s
Troyanec [42]

Answer:20%

Step-by-step explanation:

Percentage decrease=(65.50-52.40)/65.50 x 100

Percentage decrease=13.1/65.50 x 100

Percentage decrease=0.2 x 100

Percentage decrease=0.2 x100

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7 0
2 years ago
How do you find m and n?
erma4kov [3.2K]

Answer:

180°-50=130 this is m°

50-130=70 that is n°

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2 years ago
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