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3 years ago

A game last 7/8 hour Karen played five of those games how long did she play in total

Mathematics

1 answer:

myrzilka [38]3 years ago

6 0

Answer:

262.5 minutes or 4.375 hours

Step-by-step explanation:

7/8=0.875

60 minutes=1 hours

5 is the amount Karen played

7/8 of 60 minutes will be 52.5 minutes since 0.875*60=52.5

52.5*5=262.5 minutes

262.5/60=4.375 hours

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Hey i need help with system of equations.<br> i uploaded a doxs file you can onpen it in google docs

Art [367]

Answer:

Step-by-step explanation:

PART A:

The first equation is $x + y = 7\\y = 7 - x .............(a)$

The second equation is $3x - 2y = 1\\2y = 3x - 1$

Putting the value of y from (a) in the above equation, we get $2y = 3x - 1\\2(7 - x) = 3x - 1\\14 - 2x = 3x - 1\\x = 15$

From (a) we get y = 7 - x = 7 - 15 = -8

PART B:

Here the system of equations are $-x + 4y = 17........(a) and 3x - 5y = -30.........(b)$

From (a) we get, $x = 4y - 17$

Putting the above value of x in (b) we get, $3x - 5y = -30\\3(4y - 17) - 5y = -30\\12y - 51 - 5y = -30\\7y = 21\\y = 3$

Hence, $x = 4y - 17 = 12 - 17 = -5$

3 0

3 years ago

Find parametric equations through point P=(2,2,7) in the direction of the vector v = (44, 14, -20)?

ycow [4]

9514 1404 393

Answer:

(x, y, z) = (2+44t, 2+14t, 7-20t)

Step-by-step explanation:

One way to write parametric equations for line L is ...

L = P + t·<em>v</em>

where P is the given point and <em>v</em> is the given direction vector. Using that form, we have ...

(x, y, z) = (2+44t, 2+14t, 7-20t)

If you like, you can remove a common factor of 2 from the coefficients of t.

(x, y, z) = (2+22t, 2+7t, 7-10t)

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2 years ago

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choli [55]

Answer:

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Step-by-step explanation:

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3 years ago

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solmaris [256]

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Step-by-step explanation:

Covert 30 feet into yards to find how many yards he should buy.

$\frac{30}{3} = \frac{x}{1}$ Solve by cross product

3x = 30

x = 10

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3 years ago

Which equation can be used to find the length of side x?

gregori [183]

Answer:

you know that 32 is higher than x is you should take away

Step-by-step explanation:

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3 years ago

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A game last 7/8 hour Karen played five of those games how long did she play in total​

A game last 7/8 hour Karen played five of those games how long did she play in total