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mr_godi [17]
2 years ago
11

Two mechanics were working on your car. One can complete the given job in six hours, but the new guy takes eight hours. They wor

ked togethr er for the first two hours, but then the first guy left to help another mechanic on a different job. How long will it take the new guy to finish your car
​
Mathematics
1 answer:
borishaifa [10]2 years ago
5 0

Answer:

10 hours to do it

Step-by-step explanation:

8-6= 2

8+2=10

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madam [21]

Answer-

x=0;y=3

x=1;y=-1

x=2;y=-5

x=3;y=-9

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3 years ago
Solve x^2+2x+7=0 using the quadratic formula.
Aneli [31]

Answer:

x=-1\pm \sqrt{6}i

Step-by-step explanation:

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

x=\frac{-(2)\pm\sqrt{2^2-4(1)(7)}}{2(1)}

x=\frac{-2\pm\sqrt{4-28}}{2}

x=\frac{-2\pm\sqrt{-24}}{2}

x=\frac{-2\pm\sqrt{-1*24}}{2}

x=\frac{-2\pm\sqrt{-1}\sqrt{24}}{2}

x=\frac{-2\pm i\sqrt{4*6}}{2}

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5 0
2 years ago
What equation could be used to determine 23% of 122?​
ArbitrLikvidat [17]

First, convert 23% into a fraction.

23% =

23 \div 100 =  \frac{23}{100}

Now the expression to determine 23% of 122 is

\frac{23}{100}  \times 122 \\  = ( \frac{23}{100} )(122)

7 0
3 years ago
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How many different 7-card hands include the ace and king of spades?
andrew-mc [135]
2118760 different 7 card hands

6 0
3 years ago
Find the area of the kite
Elanso [62]

For this case we have that the area of the kite is given by the area of two triangles, the triangles share the same base of 3 + 3 = 6 meters and one has height of 2m and the other height of 4m.

So, the total area is given by:

A = \frac {1} {2} * 6 * 2 + \frac {1} {2} * 6 * 4\\A = \frac {1} {2} 12+ \frac {1} {2} *24\\A = 6 + 12\\A = 18

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ANswer:

18m ^ 2

3 0
3 years ago
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