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allochka39001 [22]

3 years ago

8

Which two statements contradict each other? I. Jon, Elizabeth, and Franco read 27 books among them for a class. II. Franco read

6 books. III. None of the three students read more than 7 books.

1 answer:

Alex73 [517]3 years ago

6 0

Answer 1 & 3. If none of the students read over 7 books, there is no way for them to read 27 in total.

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Evaluate the expression for x = 5, y = 3, and z=1/4 .

Helga [31]

Answer:

22

Step-by-step explanation:

5(5) - 6(3) + 20(1/4)4(3)(1/4)

25 - 18 + 5*12*0.25

25 - 18 + 60*0.25

25 - 18 + 15

7 + 15

22

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2 years ago

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Consider the two groups listed below. Which statement describes the sets?

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An airplane travels 3600 miles to Spain from an airport in New Jersey this trip takes 7.5 hours how far does the plane travel in

Vanyuwa [196]

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3 years ago

Give the following equations determine if the lines are parallel perpendicular or neither

GaryK [48]

In order to determine whether the equations are parallel, perpendicular, or neither, let's simply each equation into a slope-intercept form or basically, solve for y.

Let's start with the first equation.

$\frac{6x-5y}{2}=x+1$

Cross multiply both sides of the equation.

$6x-5y=2(x+1)$ $6x-5y=2x+2$

Subtract 6x on both sides of the equation.

$6x-5y-6x=2x+2-6x$ $-5y=-4x+2$

Divide both sides of the equation by -5.

$-\frac{5y}{-5}=\frac{-4x}{-5}+\frac{2}{-5}$ $y=\frac{4}{5}x-\frac{2}{5}$

Therefore, the slope of the first equation is 4/5.

Let's now simplify the second equation.

$-4y-x=4x+5$

Add x on both sides of the equation.

$-4y-x+x=4x+5+x$ $-4y=5x+5$

Divide both sides of the equation by -4.

$\frac{-4y}{-4}=\frac{5x}{-4}+\frac{5}{-4}$ $y=-\frac{5}{4}x-\frac{5}{4}$

Therefore, the slope of the second equation is -5/4.

Since the slope of each equation is the negative reciprocal of each other, then the graph of the two equations is perpendicular to each other.

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1 year ago

3.3.4 practice: modeling: factoring ax2+bx+c

deff fn [24]

I think it should be x(ax +b) + c. Not sure though.

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