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Irina18 [472]
3 years ago
5

In a recent survey, 80% of those surveyed indicated that they preferred swimming to biking. Part 1 : If 352 people preferred swi

mming, how many people were surveyed? Part 2 : How many people preferred biking?
Mathematics
2 answers:
Alexeev081 [22]3 years ago
5 0
Answer is 88 because it sounds like the correct answer
sladkih [1.3K]3 years ago
4 0

Answer: 88

Step-by-step explanation: The equation us .8x=352 and 352/.8 is 440, which is the total. Multiply 440 by .2 which gives you 88

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The image of a parabolic lens is projected onto a graph. The image crosses the x-axis at –2 and 3. The point (–1, 2) is also on
Ierofanga [76]

Answer:

y =-\frac{1}{2}(x +2)(x - 3)

Step-by-step explanation:

Given

x_1 = -2

x_2 = 3

(x,y) = (-1,2) --- a point on the parabola

Required

The equation

First, calculate the equation from the zeros

y =k(x - x_1)(x - x_2)

Substitute x_1 = -2 and x_2 = 3

y =k(x - -2)(x - 3)

y =k(x +2)(x - 3)

To solve for k, we substitute (x,y) = (-1,2)

2 = k(-1+2)(-1-3)

2 = k(1)(-4)

2 = -4k

Divide by -4

k=\frac{2}{-4}

k=-\frac{1}{2}

So, the equation is:

y =k(x +2)(x - 3)

y =-\frac{1}{2}(x +2)(x - 3)

8 0
3 years ago
Does anyone know the correct answer?
Art [367]

Answer:

c

Step-by-step explanation:

got you g

4 0
3 years ago
Nellie is buying bird seed to put in her bird feeders. she uses about 10 pounds of bird seed each week, but has room to store an
neonofarm [45]
Nellie has to calculate the price per pound for every bag.

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2) 5.40/7.5 = 0.72 $/lb
3) 7.92/11 = 0.72 $/lb

Then,  price per pound  is the same for any bag. There is no advantage of purchasing one or other, given that she can store any quantity.
6 0
3 years ago
Read 2 more answers
It takes Wayne 1/10 hours to walk 2/6 mile park loop. What is Wayne's unit rate, in miles per hour?
-BARSIC- [3]
If it takes .1 hours to walk 2/6 miles, then it takes one hour to walk 20/6 miles.
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5 0
3 years ago
In a regular seven-sided polygon, how many diagonals can be drawn from one vertex?​
Sergeu [11.5K]

Answer:

14

Step-by-step explanation:

8 0
3 years ago
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