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kari74 [83]
3 years ago
10

What is the area of a circle with a diameter of 6x? (Use 3.14 for R

Mathematics
1 answer:
kykrilka [37]3 years ago
3 0
3.14=r
d= 3.14*2
d= 6.28

Area = 3.14*(6..28)^2
=3.14*39.43

Area = 123.83
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Which of the following describes the matrix?
Katena32 [7]

Answer:

3x3

Step-by-step explanation:

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3 years ago
What are the answers to these
ziro4ka [17]

Answer:

5A. 80

6A. 84

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12. 130

17. 800

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Step-by-step explanation:

:) I think these are correct! They are in order from each page!

5A: 80*20%=16

6A: 84*50%=42

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12: 130*40%=52

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7 0
3 years ago
Kevin and his children went into a restaurant and he bought $31.50 worth of hotdogs and drinks. Each hotdog costs $4.50 and each
stich3 [128]

Answer:

<em>He bought 6 hotdogs and 2 drinks</em>

Step-by-step explanation:

<u>System of Equations</u>

Kevin and his children went into a restaurant and bought $31.50 worth of hotdogs and drinks. Each hotdog costs $4.50 and each drink costs $2.25.

To solve the system of equations, we'll call the variables:

x = number of hotdogs

y = number of drinks

The first condition yields the equation:

4.50x + 2.25y = 31.50          [1]

It's also known he bought 3 times as many hotdogs as drinks, thus:

x = 3y         [2}

Substituting [2] in [1]:

4.50(3y) + 2.25y = 31.50

Operating:

13.5y + 2.25y = 31.50

15.75y = 31.50

y = 31.50/15.75

y = 2

And

x = 3*2 = 6

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5 0
3 years ago
A ray is a defined term because it ?
Feliz [49]
A ray is a defined term because it has no width or depth is described using an undefined term has an informal definition travels forever in one way
8 0
3 years ago
What is the equation of the axis of symmetry do the quadratic function f(x) = -(x+4) (x-1)​
miv72 [106K]

9514 1404 393

Answer:

  x = -3/2

Step-by-step explanation:

The zeros of the function are the values of x that make the factors zero:

  x = -4, x = 1

The axis of symmetry is the vertical line halfway between these zeros.

  x = (-4 +1)/2 = -3/2

The equation of the axis of symmetry is x = -3/2.

8 0
3 years ago
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