Answer: False
Step-by-step explanation:
Two negatives equals a positive
Answer:
Step-by-step explanation:
Let x represent the amount that Andre's neighbor pay him each week to mow the lawn.
Andre always gives a $2 donation to the food bank in weeks when he earns money. Since it will take him 5 weeks to earn the money for his dad's gift, his total donation for 5 weeks will be 2×5 = $10
Andre wants to save $40 to buy a gift for his dad. It means that the amount that he gets paid for mowing the lawn - his total donations in 5 weeks = the amount that he wants to save. Therefore,
x - 10 = 40
x = 40 + 10 = $50
Answer:
180 feet
Step-by-step explanation:
|-60+120| is 180
For # 3 and 5 you need to use the quadratic formula:
<span>(-b +/- srt(b^2 - 4ac))/2a </span>
<span>a, b, and c are representative of this formula: ax^2 +bx + c </span>
<span>1) 2x^2+3x-9=0 </span>
<span>(2x - 3)(x + 3) = 0 </span>
<span>2x - 3 = 0, x + 3 = 0 </span>
<span>+3 +3, -3 -3 </span>
<span>2x = 3, ***x = -3*** </span>
<span>/2 /2 </span>
<span>***x = 3/2*** </span>
<span>2) 5x^2+2x=0 </span>
<span>(x)(5x + 2) = 0 </span>
<span>5x +2 = 0, ***x = 0*** </span>
<span>-2 -2 </span>
<span>5x = -2 </span>
<span>/5 /5 </span>
<span>***x = -2/5*** </span>
<span>4) 4x^2+7x-2=0 </span>
<span>(4x - 1)(x + 2) = 0 </span>
<span>4x - 1 = 0, x + 2 = 0 </span>
<span>+1 +1, -2 -2 </span>
<span>4x = 1, ***x = -2*** </span>
<span>/4 /4 </span>
<span>***x = 1/4***</span>
Answer:
d0
Step-by-step explanation:
3
