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Iteru [2.4K]
3 years ago
15

There are three shelves.each shelf has 28 books.there is also a stack of some more books.there are a total of 85 books.which equ

ation represent this situation
Mathematics
1 answer:
Charra [1.4K]3 years ago
8 0
3s+28=85, take away 28 from both sides of the equals to give you 3s=57, divide by 3 on both side to give you s=19.
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Describe each
lorasvet [3.4K]

Problem 1

<h3>The slope of the line is undefined </h3>

because this line is completely vertical. All vertical lines have undefined slopes. The x coordinates are both x = p, so there is no change in the x coordinates. Note how the slope formula below leads to a denominator of 0.

m = (y2 - y1)/(x2 - x1)

m = (-a - a)/(p - p)

m = (-2a)/0

We cannot divide by zero, which is why the slope is undefined.

=====================================

Problem 2

<h3>The equation is simply x = p</h3>

The equation of any vertical line is of the form x = k, where k can be replaced with any number or expression. In this case, we replace k with p. Let's say that p = 9. This would mean x = p updates to x = 9; telling us that we have a vertical line through 9 on the x axis.

=====================================

Problem 3

There is no y intercept if p is not equal to zero. This is because any vertical line is parallel to the y axis. Parallel lines never intersect. The y intercept is where the graph crosses the y axis.

If p = 0, then the entire line overlaps the y axis (yielding infinitely many y intercepts); otherwise, if p is nonzero, then there are no y intercepts.

<h3>The answer to part 3 will depend on the status of p being nonzero or not.</h3>

=====================================

Problem 4

<h3>Answer: 0</h3>

The original line is vertical, so any line perpendicular to this original one will be horizontal. All horizontal lines have a slope of zero.

Example: the horizontal line through (2,3) and (7,3) has a slope of zero as the slope formula below shows

m = (y2 - y1)/(x2 - x1)

m = (3-3)/(7-2)

m = 0/5

m = 0

4 0
3 years ago
Gwyneth begins solving for x in the equation 2(x-4)=5(4-2x)+4x. After applying the distributive property and combining like term
Olenka [21]

Answer:

2x-8 = 20-6x

Step-by-step explanation:

The distributive property tells us to multiply the term outside parentheses by everything inside:

2(x-4) = 5(4-2x)+4x

2(x)+2(-4) = 5(4)+5(-2x)+4x

2x-8 = 20-10x+4x

Combining like terms on the right gives us

2x-8 = 20-6x

4 0
3 years ago
Read 2 more answers
An object falls 3 meters during the first second, another 15 meters during the second second, and then 75 meters more during the
Lana71 [14]
3 times 5 equals 15
15 times 5 equals 75
75 times 5 equals 375
hope this helped (:



8 0
3 years ago
What is the axis of symmetry for the graph of this equation?
den301095 [7]

Answer:

x=1

Step-by-step explanation:

x=-b/(2a)

a=2

b=-4

c=2

-(-4)/(2*2)=4/4 or 1

x=1

4 0
3 years ago
Read 2 more answers
What is the gcf of 54 and 90
Viktor [21]
The greatest common factor of 54 and 90 is 18
8 0
3 years ago
Read 2 more answers
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