Fraction Decimal Percentage
30/1000 0.03 3%
29/1000 0.029 2.9%
28/1000 0.028 2.8%
29/997 0.02909 2.909%
Answer:
9
Step-by-step explanation:
<u>Given expression:</u>
- (-2 + 1)2 + 5(12 : 3) – 9
<u>It is assumed that it is multiplication sign before/after parenthesis:</u>
- (-2 + 1)×2 + 5×(12 : 3) – 9 = 1. Parenthesis
- (-1)×2 + 5×4 - 9 = 2. Multiplication
- -2 + 20 - 9 = 3. Addition
- 18 - 9 = 4. Subtraction
- 9 5. Final result
Answer: 75
Step-by-step explanation:
Let's use the point-slope formula...
<em>y-y1=m(x-x1)
</em>
<em>m is the slope.
</em>
<em>y--9=7(x--2)
</em>
<em>Subtracting a negative number is the same as adding a positive number...
</em>
<em>y+9=7(x+2)
</em>
<em>y+9=7x+14
</em>
<em>Let's subtract 9 from both sides...
</em>
<em>-9+y+9=7x+14-9
</em>
<em>y=7x+5
</em>
<em>The formula is now in the format of...
</em>
<em>y=mx+b
</em>
<em>This is known as slope-intercept.
</em>
<em>m is the slope.
</em>
<em>b is the y-intercept, the value of y when x=0.
</em>
<em>Standard formula is...
</em>
<em>Ax+By=C
</em>
<em>Neither A nor B equal zero.
</em>
<em>A is greater than zero.
</em>
<em>y=7x+5
</em>
<em>Let's move 7x to the left side of the equation. It becomes negative.
</em>
<em>-7x+y=5
</em>
<em>Let's multiply both sides by -1 to render A greater than zero.
</em>
<em>-1(-7x+y)=(5)(-1)
</em>
<u>7x-y=-5
</u>
<u>This is the equation in standard form.</u>
