3 years ago

What expression is equivalent to 14 − 17 ?

Mathematics

1 answer:

DENIUS [597]3 years ago

4 0

answer:

Step-by-step explanation:

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Marcie can swim 20 laps in an hour. How many hours will it take her to swim 100 laps

Margarita [4]

Answer:

5 hours

Step-by-step explanation:

We can write a ratio

20 laps 100 laps

-------------- = --------------

1 hour x hours

Using cross products

20x = 100

Divide by 20

20x/20 = 100/20

x = 5 hours

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2 years ago

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Find all zeros of function and write the polynomial as a product of linear factorsX^3-x^2+9x-9

mart [117]

Answer:

$\large\boxed{x=1\ \vee\ x=-3i\ \vee\ x=3i}$

Step-by-step explanation:

$\text{The zeros:}\\\\x^3-x^2+9x-9=0\\\\x^2(x-1)+9(x-1)=0\\\\(x-1)(x^2+9)=0\iff x-1=0\ \vee\ x^2+9=0\\\\x-1=0\qquad\text{add 1 to both sides}\\x-1+1=0+1\\\boxed{x=1}\\\\x^2+9=0\qquad\text{subtract 9 from both sides}\\x^2=-9$

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2 years ago

What is 471,147 times 8,132

Triss [41]

Answer:3831367404

Step-by-step explanation:

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2 years ago

Solve this system of linear equations. Separate the x- and y- values with a comma.

liubo4ka [24]

Answer:

(-1,4)

Step-by-step explanation:

Using elimination, add the two equations to get rid of the y variable.

17x = 43 - 15y

+8x = -68 + 15y

=25x = -25

Now plug in -1 for x in any of the equations.

17(-1) = 43 - 15y

-17 = 43 - 15y

-60 = -15y

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2 years ago

A right triangle has a height of 12 and a width of 5. How long is the diagonal?

Dafna1 [17]

Using Pythagoras:

12^2+5^2= 144+25=169

√169= 13

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3 years ago

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