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laiz [17]
2 years ago
10

If 3 oranges cost $1.75, how much would 20 oranges cost?

Mathematics
2 answers:
olya-2409 [2.1K]2 years ago
5 0

Answer:

$12

Step-by-step explanation:

1.75/3= 0.6 (1dp)

0.6 x 20 = 12

svetlana [45]2 years ago
3 0

<em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em><em>.</em><em>.</em>

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For the problem, use the discriminant to determine the number of real solutions for the equation. Then, find the solutions and c
Ksivusya [100]

Answer:

Discriminant = 55.2 > 0 -> 2 real solutions

Solutions: t1 = -1.1663 s and t2 = 0.35 s

The solution t1 doesn't make sense for this problem, as we can't have a negative value for the time.

So the solution is t2 = 0.35 s

Step-by-step explanation:

To find the time when the ball will reach the height of 2 meters, we just need to use the value of h = 2 in the equation given. So, we have that:

−4.9t^2 − 4t + 4 = 2

−4.9t^2 − 4t + 2 = 0

For this equation, we have the constants a = -4.9, b = -4 and c = 2. So the discriminant Delta is:

Delta = b^2 - 4ac = 16 + 39.2 = 55.2

sqrt(Delta) = 7.4297

As Delta > 0, we have 2 real solutions

t1 = (-b + sqrt(Delta)) / 2a = (4 + 7.4297) / (-9.8)  = -1.1663 s

t2 = (-b - sqrt(Delta)) / 2a = (4 - 7.4297) / (-9.8)  = 0.35 s

Number of real solutions: 2

Solutions: t1 = -1.1663 s and t2 = 0.35 s

The solution t1 doesn't make sense for this problem, as we can't have a negative value for the time.

So the solution is t2 = 0.35 s

8 0
3 years ago
True or false - A risk ratio and an odds ratio are different names for the same concept
aalyn [17]
True would be right
6 0
2 years ago
Why We Sleep: The New Science of Sleep and Dreams is a popular science book about sleep by the neuroscie​
Reptile [31]

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3 years ago
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What is the slope of the line that passes through the points (-20, 18) and (30, 14)?
RideAnS [48]
Gradient =

Change in Y
———————
Change in X

Change in Y is 18 - 14 = 4
Change in X is -20 - 30 = -50

Therefore the gradient is 4/-50 which is then simplified to - (2/25)
7 0
2 years ago
Jack is a discus thrower and hopes to make it to the Olympics some day. He has researched the distance (in meters) of each men's
wolverine [178]

Answer:

65.03 meters

Step-by-step explanation:

The line of best fit, for the distance of the winning throw, in x years after 1980 is:

y = 0.34x + 44.63

Using the line of best fit, estimate what the distance of the gold medal winning discus throw was in 1980.

1980 - 1920 = 60, so this is y(60).

y(60) = 0.34(60) + 44.63 = 65.03

So the answer is 65.03 meters.

8 0
2 years ago
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