3 years ago

Help what's the answer to 2 + 3a + 9a? 2+2a? Or 14a?

Mathematics

1 answer:

bulgar [2K]3 years ago

3 0

2+12a. When adding, you're only collecting "like terms".

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Does anybody know how to solve for “C”?.

Jobisdone [24]

Answer:

c = (b+3a)/2

Step-by-step explanation:

Solve for c:

1/ac = 2/ab - 3/bc

Multiply both sides by abc:

abc/ac = 2abc/ab - 3abc/bc
b = 2c - 3a
b + 3a = 2c
2c = b + 3a
c = (b + 3a)/2

8 0

3 years ago

M minus 5 minus (negative 12)

Nimfa-mama [501]

M-5-(-12) would equal m+7 because there is a negative before the parentheses and in the parentheses which means you would change it to a positive so, negative 5 plus positive 12 is 7 and since the 7 is positive you would add m (hope this helped)

6 0

3 years ago

The figure shows a kite inside a rectangle. Which expression represents the area of the shaded region? 2x2 4x2 6x2 8x2

Savatey [412]

The picture in the attached figure

we know that
area of the the shaded region=area of rectangle -area of a kite

area of rectangle=(3x+x)*(x+x)----> 4x*2x---> 8x²

area of a kite=(1/2)*[d1*d2]
where d1 and d2 are the diagonals
d1=4x
d2=2x
so
area of a kite=(1/2)*[4x*2x]----> 4x²

area of the the shaded region=8x²-4x²-----> 4x²

the answer is
4x²