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Romashka-Z-Leto [24]
3 years ago
8

Y=(3/4)x-1 Is it parallel?

Mathematics
1 answer:
AVprozaik [17]3 years ago
8 0

Answer:

I don't have the answer but I do have an example

Example:

Solution: The slope of the given line, y = -4x + 5 is -4 (remember y = mx + b).

Since parallel lines have = slopes, our line has a slope of -4.

Use the point -slope form of the equation of a line: y - y1 = m(x - x1).

m = -4      (x1, y1) = (6,-3)

ANSWER:    y - (-3) = -4(x - 6)

y + 3 = -4x + 24

y = -4x + 21

Hope this helps

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You have been assigned to determine whether more people prefer Coke or Pepsi. Assume that roughly half the population prefers Co
Alex Ar [27]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

Step-by-step explanation:

For this case we have the following info given:

ME=0.03 the margin of error desired

Conf= 0.95 the level of confidence given

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

the critical value for 95% of confidence is z=1.96

We can use as estimator for the population of interest \hat p=0.5. And on this case we have that ME =\pm 0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

3 0
3 years ago
HELP! I'll mark you the brainest and give you all my points !! (Show all work)
Paha777 [63]

1. F(3)= -2(3)-5

-6-5

F(3)=-11

2. F(3)= -2(3)^2-4

-6^2-4

36-4

F(3)=32

3. F(x)=−2x−5

For: x=−2, f(x) is:f(−2)=(−2×−2)−5=4−5=−1

For: x=−1, f(x) is:f(−1)=(−2×−1)−5=2−5=−3

For: x=1, f(x) is:f(1)=(−2×1)−5=−2−5=−7

For: x=2, f(x) is:f(2)=(−2×2)−5=−4−5=−9

The Range is:

{−1,−3,−7,−9}

4. -80, -110

4 0
3 years ago
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6 0
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Please help!!!!!!!!!!
pogonyaev

Answer:

By hypotenuse - side test (HL) the two triangles are congruent.

Step-by-step explanation:

In ∆ABC and ∆DCB

i) angleABC = angleDCB.....(each 90°)

ii) BC = BC .....( common side)

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therefore by hypo-side test ∆ABC congruent ∆DCB

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