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3241004551 [841]
2 years ago
5

You pick a card at random.

Mathematics
1 answer:
taurus [48]2 years ago
5 0
682 is because it is a bit number
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Simplify the expression 2x+4(3y+x).
inysia [295]

Answer:

The answer in simplified form would be 6x+12y.

Step-by-step explanation:

3 0
3 years ago
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Bernie has $16000 invested, part at 3% and the remainder at 5%. If the yearly interest on each investment is the same, how much
Snowcat [4.5K]
If the interest is the same for both accounts then:

.03x=.05(16000-x)

.03x=800-.05x

.08x=800

x=10000, since the interest is the same for both we can just double the interest from one investment to find the total interest earned each year...

.03(10000)2=$600.00
3 0
3 years ago
The equation for a parabola has the form y = ax^2 + bz + c, where a, b, and c are constants and aメ0. Find an equation for the pa
vova2212 [387]

Answer:

a = 2, b = -9, c = 3

Step-by-step explanation:

Replacing x, y values of the points in the equation y = a*x^2 + b*x +c give the following:  

(-1,14)

14 = a*(-1)^2 + b*(-1) + c  

(2,-7)

-7 = a*2^2 + b*2 + c  

(5, 8)  

8 = a*5^2 + b*5 + c  

Rearranging:

a - b + c = 14  

4*a + 2*b + c = -7

25*a + 5*b + c = 8

This is a linear system of equations with 3 equations and 3 unknows. In matrix notation the system is A*x = b whith:

A =

1    -1  1

4    2  1

25  5  1

x =

a  

b

c

b =

14

-7

8

Solving A*x = b gives x = Inv(A)*b, where Inv(A) is the inverse matrix of A. From calculation software (I used Excel) you get:

inv(A) =  

0.055555556 -0.111111111   0.055555556

-0.388888889 0.444444444   -0.055555556

0.555555556 0.555555556 -0.111111111

inv(A)*b

2

-9

3

So, a = 2, b = -9, c = 3

5 0
3 years ago
*Describe the slopes + the y intercepts of the solutions:
blondinia [14]

1. One Solution: Slopes:1 and -1 y-ints:1 and 2


2. Many: Slopes:1 and 1 y-ints:1 and 1


3. Undefined: Slopes:1 and 1 y-ints:1 and 2

Hope Your Thanksgiving Goes Well, Here's A Turkey


-TheKoolKid1O1


3 0
3 years ago
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Translate the phrase "in 3 years" into algebraic terms
Semenov [28]

Answer:

In three years can be into algebraic terms as:  3 + x. Where 'x' comes to be today's age.

For example, my age in three years will be:

If I'm 24 years right now, My age in three years = 3 + x ⇒ My age in three years = 3 + 24 = 27.

3 0
3 years ago
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