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Alex17521 [72]
3 years ago
5

Anne Claire earns $12.20 per hour as a veterinary technician. Last week she worked 25.5 hours. What are her total earnings?

Mathematics
2 answers:
guapka [62]3 years ago
6 0

Answer:

I think the answer is 311.1

Step-by-step explanation:

bogdanovich [222]3 years ago
4 0

Answer:

$311.10

Step-by-step explanation:

Anne Claire earns $12.20 per hour. Last week, she worked 25.5 hours.

Multiply the unit rate of pay by the total hours she worked in the pervious week to get her total earnings.

12.20*25.5=311.10

She should have a total earning of $311.10.

Hope this helps.  

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4 - 2x = 10 plz solve
posledela

Answer:

x=7

Step-by-step explanation:

Opposite of subtraction is adding so you do 4+10=14 so that means that x equals seven because 2x7 equals 14.

4 0
3 years ago
Solve the system by using a matrix equation
Sergeu [11.5K]

Answer:

Option A is correct (17,11).

Step-by-step explanation:

6x - 9y = 3

3x - 4y =7

it can be represented in matrix form as\left[\begin{array}{cc}6&-9\\3&4\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] = \left[\begin{array}{c}3\\7\end{array}\right]

A= \left[\begin{array}{cc}6&-9\\3&4\end{array}\right]

X= \left[\begin{array}{c}x\\y\end{array}\right]

B= \left[\begin{array}{c}3\\7\end{array}\right]

i.e, AX=B

or X= A⁻¹ B

A⁻¹ = 1/|A| * Adj A

determinant of A = |A|= (6*-4) - (-9*3)

                                    = (-24)-(-27)

                                    = (-24) + 27 = 3

so, |A| = 3

Adj A=  \left[\begin{array}{cc}-4&9\\-3&6\end{array}\right]

A⁻¹ =  \left[\begin{array}{cc}-4&9\\-3&6\end{array}\right]/3

A⁻¹ =  \left[\begin{array}{cc}-4/3&3\\-1&2\end{array}\right]

X= A⁻¹ B

X=  \left[\begin{array}{cc}-4/3&3\\-1&2\end{array}\right] *\left[\begin{array}{c}3\\7\end{array}\right]

X= \left[\begin{array}{c}(-4/3*3) + (3*7)\\(-1*3) + (2*7)\end{array}\right]

X= \left[\begin{array}{c}-4+21\\-3+14\end{array}\right]

X= \left[\begin{array}{c}17\\11\end{array}\right]

x= 17, y= 11

solution set= (17,11).

6 0
3 years ago
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Answer:

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3 0
2 years ago
If using the method of completing the square to solve the quadratic equation x2 + 3x - 17 = 0, which number would have to be add
MatroZZZ [7]

Answer:

Step-by-step explanation:

To solve using completing square, we need to write the equation as x2+3x=17.

The next step is to add a number such that the square can be completed. The number must be equal to (b/2a)^2, so here it will be (3/2)^2 = 9/4

The equation then becomes x2+3x+(9/4)=17+(9/4).

Solving it further will get you the final answer

8 0
2 years ago
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