Answer:
0.375
Step-by-step explanation:
1.y=2x-1
2.y=-x+2
using substitution method
1.y=2x-1
y+1=2x
the other equation where there is an <em><u>x </u></em><em><u>will </u></em><em><u>be </u></em><em><u>replaced </u></em>by a <em><u>the </u></em><em><u>first </u></em><em><u>equation</u></em>
so
2.y=-(y+1)+2
y=-y-1+2
y=-y+1
y+y=1
2y=1
2y/2=1/2
y=0.5
the value of y is <em><u>0</u></em><em><u>.</u></em><em><u>5</u></em> the value of x would be found by <em><u>taking </u></em><em><u>the </u></em><em><u>y </u></em><em><u>and </u></em><em><u>replacing</u></em><em><u> </u></em><em><u>it </u></em><em><u>with </u></em><em><u>0</u></em><em><u>.</u></em><em><u>5</u></em><em><u> </u></em><em><u>in </u></em><em><u>any </u></em><em><u>of </u></em><em><u>questions</u></em><em><u> </u></em><em><u>one </u></em><em><u>and </u></em><em><u>two.</u></em>
1.y(0.5)=2x-1
0.5=2x-1
0.5+1=2x
1.5=2x
1.5/2=2x/2
0.75=x
the value of <em><u>y </u></em><em><u>is </u></em><em><u>0</u></em><em><u>.</u></em><em><u>5</u></em> and <em><u>x </u></em><em><u>is </u></em><em><u>0</u></em><em><u>.</u></em><em><u>7</u></em><em><u>5</u></em>
<em><u>0</u></em><em><u>.</u></em><em><u>5</u></em><em><u>*</u></em><em><u>0</u></em><em><u>.</u></em><em><u>7</u></em><em><u>5</u></em><em><u>=</u></em><em><u>0</u></em><em><u>.</u></em><em><u>3</u></em><em><u>7</u></em><em><u>5</u></em>
=0.375
Answer: She had 16 boxes of pencils.
Step-by-step explanation: Divide 96 by 6 to get 16.
Answer:
x intercept is 6/13
y intercept is -6
Step-by-step explanation:
x intercepted when y is zero.
y intecepted when x is zero...
9514 1404 393
Answer:
x = -7, x = 9
Step-by-step explanation:
We presume your equation is ...
x² -2x -63 = 0
Factors of -63 that have a sum of -2 are -9 and +7. Then the factored equation is ...
(x -9)(x +7) = 0
Solutions make the factors zero.
x -9 = 0 ⇒ x = 9
x +7 = 0 ⇒ x = -7
The solutions to the quadratic equation are x = -7 and x = 9.
