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Elza [17]
3 years ago
11

–4b + 8c + 12 – 8b – 2c + 6 simplified

Mathematics
1 answer:
yawa3891 [41]3 years ago
5 0
The answer would be 6c-12b+18
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Which ratio is equal to 27 : 81?
Assoli18 [71]

Answer:

C) 3: 9

Step-by-step explanation:

27: 81

Ratios are same as fractions, that is why 27:81 = 27 / 81

Now that we go this fraction, let's make it an equivalent fraction:

(27 / 9) / (81/9)

=> 3/9

=> 3 : 9

If my answer helped, kindly mark me as the brainliest!  

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4 0
3 years ago
Read 2 more answers
Please help me and I’ll give you brainiest!!!!!!!!! :))))
katen-ka-za [31]

Answer:

12

Step-by-step explanation:

4 0
3 years ago
ABCD is a parallelogram with coordinates A(4, 2), B(3, −1), C(−1, −1), and D(−1, 2). To prove that ABCD is a parallelogram, you
daser333 [38]

The answer is A im pretty sure

3 0
3 years ago
Answer, please. Thanks in advance
myrzilka [38]

Answer:

y = -2/4x + 2 --- SLOPE INTERCEPT FORM

OR IF WANTING IT TO BE SIMPLIFIED:

y = -1/2x + 2 --- SLOPE INTERCEPT FORM

Step-by-step explanation:

The starting point is 2. The slope is -2/4 or if it needs to be simplified, then it's -1/2.


Sorry if I'm incorrect...



4 0
3 years ago
Prove the quadratic formula
STALIN [3.7K]

ax² + bx + c = 0

x = (-b ± √(b² - 4ac))/2a


First, rewrite the first equation so that the first coefficient is 1. Divide everything by a.

(ax² + bx + c = 0)/a =

x² + (b/a)x + (c/a) = 0

Isolate (c/a) by subtracting (c/a) from both sides

x² + (b/a)x + (c/a) (-(c/a) = 0 (- (c/a)

x² + (b/a)x = 0 - (c/a)

Add spaces

x² + (b/a)x          =  -c/a

Take 1/2 of the middle term's coefficient and square it. Remember that what you add to one side, you add to the other.

x² + (b/a)x + (b/2a)² = -c/a + (b/2a)²

Simplify the left side of the equation.

x² + (b/a)x + (b/2a)² = (x + (b/2a))²

(x + b/2a))² = ((b²/4a²) - (4ac/4a²)) -> ((b² - 4ac)/(4a²))

Take the square root of both sides of the equation

√(x + b/2a))² = √((b²/4a²) - (4ac/4a²))

x + b/(2a) = (±√(b² - 4ac)/2a

Simplify. Isolate the x.

x = -(b/2a) ± (∛b² - 4ac)/2a = (-b ± √(b² - 4ac))/2a

~

3 0
3 years ago
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