How do I solve forax+by=c
Answers
Answer:
Subtract ax from both sides. ax + by − ax = c − ax.
Simplify. by = c − ax.
Divide both sides by b ; b ≠ 0. by b = c b − ax b ; b ≠ 0.
Simplify. y = c − ax b ; b ≠ 0.
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Answers
Example:-
3 >>> its opposite is -3
3 + -3 = 0
Answer: The answer is zero/0 That is because an opposite of a positive integer would be a negative.
An example is-
3 >>> its opposite is -3,
3 + -3 = 0
B) is that as large as a square meter? Explain
Answers
So the area of the table (which is square) is 50*50=2500cm². or 0.25m²
It's not a full square meter which would be 1 meter by 1 meter or 100cm*100cm=10000cm²
Check all that apply.
2x2 +9x + 4 = 0
Answers
Answer:
Step-by-step explanation:
Use quadratic formula:
x=((-b+-sqrt(b^2-4ac))/2a
x=((-9+-sqrt(9^2-4(2)(4))/2(2)
x=((-9+-sqrt(81-32))/4
x=((-9+-sqrt(49))/4
x=(-9+-7)/4
Solution 1:
x=-2/4
x=-1/2
Solution 2:
x=-16/4
x=-4
Now we check:
2(-1/2)^2+9(-1/2)+4=2/4+-9/2+4=1/2+-9/2+4=-8/2+4=-4+4=0 (x=-1/2 works)
2(-4)^2+9(-4)+4=2(16)+(-36)+4=32-36+4=-4+4=0 (x=-4 works)
So the solutions of the equation are x=-1/2 and x=-4
in this case
a=2 b=9 c4
for this equation we have the formula
x1/2 = (-b +- (root of) b2 -4ac) /2a
x1/2 = (-9 +- (root of) 81- 4×2×4)/2×2
x1/2= (-9 +- (root of) 81-32)/4
x1/2 = (-9 +- (root of) 49/4
x1/2 = (-9 +- 7)/4
x1= -9+7/4
x1=-2/4
x1=-1/2
x2= -9-7/4
x2= -16/4
x2= -4
Answers
8.4 divide by 4 and you get 2.1.
= 8.4 / 4 = 2.1
b) 0.25 = Second Value / First value
0.25 = Second Value / 9
Second value = 0.25 * 9 = 2.25.
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