Answer:
speed = distance / time
Jana's speed is
speed = (3.5 mi)/(1/3 h) = 3*3.5 mi/h = 10.5 mi/h
1 Solve for <span>yy</span> in <span>-2x+y=1.3<span>−2x+y=1.3</span></span>How?
<span>y=1.3+2x<span>y=1.3+2x</span></span>
2 Substitute <span>y=1.3+2x<span>y=1.3+2x</span></span> into <span>2(0.5x-y)=4.6<span>2(0.5x−y)=4.6</span></span>How?
<span>2(-1.5x-1.3)=4.6<span>2(−1.5x−1.3)=4.6</span></span>
3 Solve for <span>xx</span> in <span>2(-1.5x-1.3)=4.6<span>2(−1.5x−1.3)=4.6</span></span>How?
<span>x=-2.4<span>x=−2.4</span></span>
4 Substitute <span>x=-2.4<span>x=−2.4</span></span> into <span>y=1.3+2x<span>y=1.3+2x</span></span>How?
<span>y=-3.5<span>y=−3.5</span></span>
5 Therefore,
<span>x=-2.4<span>x=−2.4</span></span>
<span>y=-3.5<span>y=−3.<span>5</span></span></span>
Answer:
b = -23/16
Step-by-step explanation:
The variable x can be eliminated from the system by multiplying the first equation by -2 and adding that to the second equation.
-2(-4b +x) +(8b +2x) = -2(7) +(-9)
16b = -23 . . . . . collect terms
b = -23/16 . . . . divide by the coefficient of b
The value of b is -23/16 = -1 7/16.
The number Pi (π) goes on forever with no repeating pattern; therefore it is irrational.
Answer: True
