Multiple: 45 * (-3) = 4 · (-3)5 · 1 = -125 = -2.4 · 51 · 5
Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(-12, 5) = 5
Divide: -125 : 4 = -125 · 14 = -12 · 15 · 4 = -1220 = -35
To divide one fraction by another, invert (turn upside-down) the second fraction, then multiply.
Step-by-step explanation:
multiplying the 2nd eqn by 9 we get,
9x+9y=81
then,subtracting 1st and 2nd eqn
9x+5y=41
9x+9y=81
- - -
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0. -4y=-40
we get y = 10
then we get x=9-y
x=9-10
x= -1
so x is -1 and y is 10
Answer: The 1st and 2nd one in the first row of questions aren’t statistical questions, the one in the middle of those two are though. The 1st and 3rd one in the second row of questions is a stat question and the 2nd one in the second row isn’t. Hope this helped and wasn’t confusing, but i’m not really sure about this answer!
Answer: A) -4
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Explanation:
The 3^0 in the denominator is equal to 1. Any nonzero number raised to an exponent of 0 is always 1. So this equation x^0 = 1 is true when x is nonzero.
This allows us to simplify to the equation 3^x = 1/81
Note how 81 = 3^4. Taking the reciprocal of 81 means the exponent goes from positive to negative. So 3^(-4) = 1/81. The rule is x^(-k) = 1/( x^k ). We could use logarithms to solve 3^x = 1/81.
Answer:
c>=2
Step-by-step explanation:
-4c>=22-30
c>=(22-30)/-4
c>=-8/-4
c>=2