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Helga [31]
3 years ago
8

What is the slope of the line passing through the points (2, 1) and (4, 31)?

Mathematics
1 answer:
jeyben [28]3 years ago
6 0

31-1/4-2=

30/2=

15

slope=15

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At the store, a frozen turkey costs $0.99
Nana76 [90]

Answer:frozen turkey is $11.00 fresh is $20.28 cents

Step-by-step explanation:

so $8.40 cents

4 0
3 years ago
Write an equation of the perpendicular bisector of the segment with end points M(1,5) and N(7,-1)
vitfil [10]
The perpendicular bisector of the segment passes through the midpoint of this segment. Thus, we will initially find the midpoint P:

P=\dfrac{(1,5)+(7,-1)}{2}=\dfrac{(8,4)}{2}=(4,2)

Now, we will calculate the slope of the segment support line (r). After this, we will use the fact that the perpendicular bisector (p) is perpendicular to r:

m_r=\dfrac{\Delta y}{\Delta x}=\dfrac{5-(-1)}{1-7}=\dfrac{6}{-6}\iff m_r=-1


p\perp r\Longrightarrow m_p\cdot m_r=-1\Longrightarrow m_p\cdot(-1)=-1\iff m_p=1

We can calculate the equation of p by using its slope and its point P:

y-y_P=m_p(x-x_P)\\\\
y-2=1\cdot(x-4)\\\\
y-2=x-4\\\\
\boxed{p:~~y=x-2}
4 0
3 years ago
a wheel has a diameter of 15cm. The wheel travels 50 metres. How many revolutions does the wheel complete?
TEA [102]

Answer:

106

Step-by-step explanation:

The diameter of the wheel is 15 cm or 0.15 m.

The circumference of the wheel is 0.15π m ≈ 0.47 m.

So the wheel moves 0.47 m with each revolution.

The wheel travels 50 m, so the number of revolutions is:

(50 m) / (0.47 m/rev) ≈ 106 revolutions.

8 0
3 years ago
We​ don't know f (x) but we do know that x = 1 is a critical number of f' (x) and we know f" (x)=12x. Use this information to de
vovangra [49]

Answer:

relative minimum

Step-by-step explanation:

From f^''(x) = 12x we can take the integration to find out what f'(x) is:

f'(x) = 6x^2 + C

Furthermore, we can substitute x = 1 for f''(x) to find out whether it's positive or negative

f''(1) = 12*1 = 12 > 0

So if x=1 is a critical point of f'(x) and f''(x=1) > 0 then that point is a relative minimum point  

4 0
3 years ago
PLEASE HELP ME! I REALLY NEED IT! <br> Write the equation of the line in point-slope form.
kolezko [41]

Answer:

y=-x/3-8

Step-by-step explanation:

First we find 2 points:

(0,-8) and (6,-10)

then substitute in y=ax+b equation

-8=0a+b, b=-8

-10=6a-8

a= -1/3

6 0
4 years ago
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