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Orlov [11]
3 years ago
11

Evaluate the expression. (15 + 6) divided by 3

Mathematics
2 answers:
mina [271]3 years ago
8 0
The answer is 7.

You want to use PEMDAS. Do the parenthesis (15+6) which is 21. Then divide 21 by 3 which gets you 7.
pshichka [43]3 years ago
3 0
7. (15+6)=21 and 21/3=7
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2 years ago
What expression is equivalent to (2a - 7) + 5(3 - a)
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Plz help with math thank you
Delicious77 [7]

Answer:

Step-by-step explanation:

Law of Sines  recall   Sin(A) /a  = Sin(B) /b  

does the above make sense?

Next we need to find  the angle of A

notice that 16+75=91  :o

so angle A is only 89° ..(b/c all the way around then inside of a triangle is 180)  so this is NOT a right triangle but that's okay, b/c law of sines still works fine.

then we want to find length of line AB

and if 89 = A  then a = BC

and if  75 = B the  b = AB (note that in the given triangle this is angle C, i'm using B , b/c you can see the difference between capital B and  lower case b much easier than you can with C, & c  :/   )

capitals are the angles while lower case are the length of the sides

then

Sin(89) / 29 = Sin(75) / b

solve the parts that can be put into numbers or solve for 'b' first, that means isolate 'b' all by itself on one side of the equal sign .

0.034477 = 0.965925/ b

b = 0.965925 / 0.034477

b = 28.0165

b = 28.0 ( to the nearest 10th)

we have the parts to plug in now

Sin(75) /

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Ipatiy [6.2K]

Answer:

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Step-by-step explanation:y

put in slop intersect form y=3/5x  +   2/5  =  3/5

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3 years ago
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