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user100 [1]
3 years ago
15

Bert decided to start exercising. The first day he jogged for 25 minutes. The next day he wanted to jog for 4 minutes more than

the previous day. He wanted to continue increasing by the same amount like this for every one of the 30 days in April.
Write an explicit formula to find the number of minutes that Bert ran on any day in April.
Mathematics
1 answer:
vova2212 [387]3 years ago
8 0
25 + 4x where x equals the number of days
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PLEASE HELP!!!!! What is the value of x in the matrix equation below?
Brums [2.3K]

The given matrix equation is,

1.5\left[\begin{array}{cc}x&6\\8&4\end{array}\right] +y\left[\begin{array}{cc}1&4\\3&2\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right].

Multiplying the matrices with the scalars, the given equation becomes,

\left[\begin{array}{cc}1.5x&9\\12&6\end{array}\right] +\left[\begin{array}{cc}y&4y\\3y&2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]  \\

Adding the matrices,

\left[\begin{array}{cc}1.5x+y&9+4y\\12+3y&6+2y\end{array}\right]  =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]  \\

Matrix equality gives,

1.5x+y=z\\ 9+4y=z\\ 12+3y=6z\\ 6+2y=2

Solving the equations together,

y=-2\\ 3y-1.5x=9\\ -1.5x=9+6\\ x=-10

We can see that the equations are not consistent.

There is no solution.

3 0
3 years ago
What is the square root
shtirl [24]

Answer:

1.081

Step-by-step explanation:

1.081330511 rounded is 1.081

5 0
3 years ago
Read 2 more answers
Please help me I appreciate
alex41 [277]
Think your answer would be C or D.
 it's your choice to decide between those two now.
8 0
3 years ago
The price of a pair of slacks is 29 dollars. What is the price after a 30% discount
Andre45 [30]

Answer:

The pair of slacks would be

C. $20.30

Step-by-step explanation:

5 0
3 years ago
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If Y varies directly with X, and Y = -5 and X = 7, what is X when Y = -85?
Tasya [4]

Answer:

X = 119

Step-by-step explanation:

Step 1: Given

Y = -5 X = 7

Y = -85 X = n

Step 2:

-85 ÷ -5 = 17

Step 3:

17 × 7 = 119

Answer:

Y = -5 X = 7

Y = -85 X = 119

n = 119

6 0
2 years ago
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