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yKpoI14uk [10]
2 years ago
8

CAN SOMEONE HELP WITH THIS ASAP!!!!!! and explain how u got the answer

Mathematics
1 answer:
mixer [17]2 years ago
4 0

9514 1404 393

Answer:

  12.4

Step-by-step explanation:

FD is marked as 6.2. It is a "midline" parallel to AC. A midline is half as long as the side it is parallel to.

  AC = 2×6.2

  AC = 12.4

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Variable y varies directly with x2, and y = 96 when x = 4.
lakkis [162]
Direct variation is y = kx, where k is the constant of variation.
 But now it says y varies directly with x2 (or 2x), so now the x in the equation is 2x.

The equation is y = k(2x)
 Now you find k.
y = 96 when x = 4.
(96) = k(2*4)
96 = k(8)
k = 12
 
The equation is now y = 12(2x)
To find the value of y when x=2, plug 2 into the equation you made. y = 12(2*2) y = 48
_________________
Now it's with a "quadratic variation," which is the same thing except x is squared.
The equation is y = kx^2
 
But y varies directly with x2 (same thing as 2x), so now it's y = k(2x)^2.
 
Now you find k by substituting y and x values that were given.
y = 180 when x = 6
(180) = k(2*6)^2
180 = k(12)^2
180 = k(144)
k = 1.25
k, 1.25, is the constant of variation.
4 0
2 years ago
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goldenfox [79]

Answer:

Kai suggested the best way to produce a random sample that is not biased

Step-by-step explanation:

5 0
2 years ago
Write in standard form: (5×100)+(6×1)+(5×1/10)+(9×1/1000)​
PIT_PIT [208]

Answer:

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Step-by-step explanation:

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2 years ago
WILL MARK BRAINLIEST IF ANSWERED CORRECTLY!
DanielleElmas [232]
First question:

4(3x-5) + (2x -2)(4 + 3x-5)
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Second question:

The average is the summation of each data value divided by the number of data values. So it would be

(4 + 5 + 9)/ 3

Simplify ------> 18/3
Divide --------> 6
6 0
2 years ago
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Katarina [22]

Answer:

C) d =rt

Step-by-step explanation:

5 0
3 years ago
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