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3 years ago

Plot the point (-3,6). Plot the point (4, -5).

Mathematics

2 answers:

Nuetrik [128]3 years ago

7 0

Answer:

(-3,5)

Step-by-step explanation:

i think?

Feliz [49]3 years ago

3 0

Step-by-step explanation:

Go left 3 and then up 6 then make a dot

Go right 4 thend own 5 then make a dot

I hope this helps

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How do I calculate this? Is there a formula?

alex41 [277]

Answer:

Height of cables = 23.75 meters

Step-by-step explanation:

We are given that the road is suspended from twin towers whose cables are parabolic in shape.

For this situation, imagine a graph where the x-axis represent the road surface and the point (0,0) represents the point that is on the road surface midway between the two towers.

Then draw a parabola having vertex at (0,0) and curving upwards on either side of the vertex at a distance of $x = 600$ or $x = -600$ , and y at 95.

We know that the equation of a parabola is in the form $y=ax^2$ and here it passes through the point $(600, 95)$ .

$y=ax^2$

$95=a \times 600^2$

$a=\frac{95}{360000}$

$a=\frac{19}{72000}$

So new equation for parabola would be $y=\frac{19x^2}{72000}$ .

Now we have to find the height $(y)$ of the cable when $x= 300$ .

$y=\frac{19 (300)^2}{72000}$

y = 23.75 meters

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3 years ago

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A bee beats its wings 250 times each second what is the average time for a single beat of a bee's wing

eduard

No. Of times bee beats in 1 sec=250
Average time =?
Frst find how many times bee beats in 1 min.
No. Of times bee beats in 1 min= 250*60=15000
Average time= 15000/ 250
Average time=60 times

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2 years ago

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A social scientist wishes to conduct a survey. She plans to ask a yes/no question to a random sample from the U.S. adult populat

agasfer [191]

Answer:

The sample proportion from the sample of 900 is more likely to be close to the true population proportion, p.

Step-by-step explanation:

for the first one

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