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zhannawk [14.2K]
3 years ago
9

Is 0.123 greater than 2.31 True or False

Mathematics
2 answers:
shtirl [24]3 years ago
4 0
False. because the number before the decimal is a 0 on the first one and a 2 on the second, it is smaller.
Rus_ich [418]3 years ago
4 0
Still false because 2.31 has a whole
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alex41 [277]
F(x) is the same as y. so you’d choose two coordinates and do y2-y1 over x2-x1. id recommend doing that with whole numbers, no decimals. by doing that you get your slope.
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TEST TOMORROW 33. Mid Town Sports Apparel has found that it needs to sell golf hats at $2.75 each to be competitive. It costs $2
Mars2501 [29]

a. The total cost is the sum of variable and fixed cost. So the average cost of each hat is simply total cost divided by x:

ave cost = (2.12 x + 3000) / x

 

b. Total cost should be equal to Income:

2.12 x + 3000 = 2.75 x

Solve for x:

x = 4762 units

 

c. Profit is income minus total cost:

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1000 = 2.75x – 2.12 x – 3000

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What is the least common multiple of the numbers 5, 25, and 15?
aliya0001 [1]
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5 0
3 years ago
4. At the end of the school year, Rachel and Amber threw their Algebra terbooks off the top of a 12-story
defon

I'm going to decode the gibberish in the question and guess the equations are

Rachel:

h=-16t^2+36t+160

Amber:

h=-16t^2+50t+160

These equations tell us a few things not explicitly mentioned in the problem.  Namely h is in feet, t is in seconds (because of the 16) and the building is 160 feet tall.  h=0 corresponds to ground level.  I made the constants of the equations the same because they're both on the twelfth floor.  The difference between 36t and 50t reflect different vertical components of the velocity of the throw. The positive signs mean they each threw their book upwards.  Air resistance is ignored.

So we need to solve two quadratic equations and compare the t values.

0=-16t^2+36t+160

t = \dfrac{-36 \pm \sqrt{36^2 - 4(-16)(160)}}{2(-16)}

t = \dfrac{-36 \pm \sqrt{16(721)}}{-32}

t = \dfrac{9 \pm\sqrt{721}}{8}

Only the plus sign gives a positive value of t, so that's our answer for Rachel:

t_R = \dfrac{9+ \sqrt{721}}{8} \approx 4.48

For Amber we get

0=-16t^2+50t+160

t = \dfrac{-50 \pm \sqrt{50^2 - 4(-16)(160)}}{2(-16)}

t = \dfrac{-50 \pm \sqrt{4(49)(65)}}{-32}

t = \dfrac{25 \pm 7\sqrt{65}}{16}

Again we choose the plus sign,

t_A = \dfrac{25+7\sqrt{65}}{16} \approx 5.09

Rachel beat Amber by

t = t_A - t_R = 5.09-4.58 = 0.51

Answer: 0.51 seconds

6 0
3 years ago
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