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grandymaker [24]
3 years ago
14

The table shows the cost of a watermelon on the 4th of July and the day after. What was the percent of change of the price of a

watermelon from the 4th of July to the 5th of July?
July Date Cost of a Watermelon
4 $5.25
5 $3.25
Round to the nearest percent.

The price of a watermelon decreased about
___ %.
Mathematics
1 answer:
Strike441 [17]3 years ago
7 0
Lol I have no idea buddy maybe ask ur teacher to teach you how to do this waittt she probably already did :l
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2 (6) - 3 (-3)  , 12 - -9 , 12 + 9 , 21
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3 years ago
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Arrange the entries of matrix A in increasing order of their cofactors values
givi [52]

To find the cofactor of

A=\left[\begin{array}{ccc}7&5&3\\-7&4&-1\\-8&2&1\end{array}\right]

We cross out the Row and columns of the respective entries and find the determinant of the remaining 2\times 2 matrix with the alternating signs.


Ac_{11}=\left|\begin{array}{ccc}4&-1\\2&1\end{array}\right|


Ac_{11}=4\times 1- -1\times 2


Ac_{11}=4+ 2

Ac_{11}=6




Ac_{12}=-\left|\begin{array}{ccc}-7&-1\\-8&1\end{array}\right|


Ac_{12}=-(-7\times 1- -1\times -8)


Ac_{12}=-(-7- 8)

Ac_{12}=15




Ac_{21}=-\left|\begin{array}{ccc}5&3\\2&1\end{array}\right|


Ac_{21}=-(5\times 1- 3\times 2)


Ac_{21}=-(5-6)


Ac_{21}=1







A_c{23}=-\left|\begin{array}{ccc}7&5\\-8&2\end{array}\right|


Ac_{23}=-(7\times 2 -8\times 5)


Ac_{23}=-(14-40)


Ac_{23}=26




A_c{31}=\left|\begin{array}{ccc}5&3\\4&-1\end{array}\right|


Ac_{31}=5\times -1 -4\times 3


Ac_{31}=-5-12


Ac_{31}=-17


A_c{33}=\left|\begin{array}{ccc}7&5\\-7&4\end{array}\right|


Ac_{33}=7\times 4- -7\times 5


Ac_{33}=28+35


Ac_{33}=63


Therefore in increasing order, we have;

Ac_{31}=-17,Ac_{21}=1,Ac_{11}=6,Ac_{23}=26,Ac_{12}=15, Ac_{33}=63



7 0
3 years ago
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(x-4)(x+1)=0
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5 0
2 years ago
A baseball player throws a baseball from a height of 1 m above the ground and its height is given by the equation h= -3.2^2+ 12.
Bingel [31]

Answer:

4.1 sec

Step-by-step explanation:

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h(t)=-3.2(t^2-4t+4-4)+1

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For the ball to touch ground, h(t)=0.

13.8-3.2(t-2)^2=0

(t-2)=2.0766

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this week Jamie spent a total of 100 minutes studying this total was more than four times the amount of minutes she studied last
Alenkasestr [34]
4x=100
×=100÷4
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3 years ago
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