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castortr0y [4]
3 years ago
10

If we wanted to know how high a 5th-grade student could jump, how many students would be reasonable to test? 5, 12, 30, or 200.

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0
The right amount to test would be 30.

200 is to many kids and 12 is not enough.

Hope this Helps!!
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The area of a rectangle is 70 m², and the length of the rectangle is 11 m less than three times the width. Find the dimensions o
11111nata11111 [884]

Step-by-step explanation:

the area of a rectangle is

length × width

in our case

length × width = 70 m²

length = 3×width - 11

we can use this second equation in the first and get

(3×width - 11) × width = 70

3×width² - 11×width - 70 = 0

the general solution to a quadratic equation is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

a = 3

b = -11

c = -70

x = (11 ± sqrt((-11)² - 4×3×-70))/(2×3) =

= (11 ± sqrt(121 + 840))/6 =

= (11 ± sqrt(961))/6

x1 = (11 + 31)/6 = 42/6 = 7

x2 = (11 - 31)/6 = -20/6 = -10/3

the negative solution is not applicable for a length in an object.

so, only x1 = 7 m is our solution.

the width of the rectangle is 7 m.

the length = 3×width - 11 = 3×7 - 11 = 21-11 = 10 m

7 0
2 years ago
A map has a scale of 2 cm: 11 m. The actual distance x from point A to point B, if these two points are 12
ahrayia [7]

9514 1404 393

Answer:

  B.  66 m

Step-by-step explanation:

Map and ground distances are proportional:

  ground/map = ground/(12 cm) = (11 m)/(2 cm)

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The distance from A to B is 66 m.

6 0
3 years ago
Give three numbers between - 6 and 10 that satisfy the given condition.
Anika [276]

Answer:

2 4 6 8

Step-by-step explanation:

6 0
2 years ago
In ten throws theo makes 4 baskets how many baskets will he make in 24 throws​
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4/10 = 40% of throws made

40% of 24 = 9.6 which rounds up to 10

3 0
3 years ago
Is 12 and 58 factors
svlad2 [7]

yes 12 and 58 factors.............................

5 0
3 years ago
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