Answer:
x = -5
, y = 0
Step-by-step explanation:
Solve the following system:
{4 x + 7 y = -20 | (equation 1)
2 x - 5 y = -10 | (equation 2)
Subtract 1/2 × (equation 1) from equation 2:
{4 x + 7 y = -20 | (equation 1)
0 x - (17 y)/2 = 0 | (equation 2)
Multiply equation 2 by 2/17:
{4 x + 7 y = -20 | (equation 1)
0 x - y = 0 | (equation 2)
Multiply equation 2 by -1:
{4 x + 7 y = -20 | (equation 1)
0 x+y = 0 | (equation 2)
Subtract 7 × (equation 2) from equation 1:
{4 x+0 y = -20 | (equation 1)
0 x+y = 0 | (equation 2)
Divide equation 1 by 4:
{x+0 y = -5 | (equation 1)
0 x+y = 0 | (equation 2)
Collect results:
Answer: {x = -5
, y = 0
The unknown exponent is 5
Answer: (-3/4)/=-3/4•4/3=-12/12=-1 = = 0
Step-by-step explanation:
Unary minus: -3
4
Multiple: the result of step No. 3 * 4
3
= -3
4
* 4
3
= -3 · 4
4 · 3
= -12
12
= -1 · 12
1 · 12
= -1
Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(-12, 12) = 12.
In words - minus three quarter multiplied by four thirds = minus one.
Compare: (the result of step No. 4) = (-1)
Unary minus: -12
12
= -1
Compare: (the result of step No. 6) = (-1)
Compare: (-1)
(2, 2)
Points B and C are symmetric (Divided by the y axis) so that means we have to find the mirrored version of A that is divided by thee y axis which is (2, 2)
I would recommend starting by turning 172 into 100+70+2. This makes it much easier to multiply it by 6.
(100+70+2) × 6 =
distributive property
(100×6) + (70×6) + (2×6) =
Simplify
600 + 420 + 12 =
Add it all together
1032
The answer would be 1032.
