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3 years ago

Please help me solve this problem... I will mark you brainliest

Mathematics

1 answer:

DaniilM [7]3 years ago

8 0

Answer:

As the wheel makes this 270 degree counterclockwise rotation about the origin, the y-coordinate of the first car decreases from 80 to 0 and then further from 0 to -80, and finally increases to 0.

The x-coordinate decreases from 0 to -80 and then increases to 0; from there it increases further to 80.

Thus, the coordinates of the first car, after this 270-degree rotation, are (80, 0).

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The town of Haverford just bought land to make a new park. The land is in the shape of a rectangle that is 2/3 of a mile wide an

frosja888 [35]

Answer:

Step-by-step explanation:

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3 years ago

The illuminance of a surface varies inversely with the square of its distance from the light source.If the illuminance of a surf

VashaNatasha [74]

Answer:

Distance between the surface and source of light will be increased by 6 meters.

Step-by-step explanation:

The illuminance of a surface varies inversely with the square of ts distance from the light source.

Let illuminance of the surface = x lumens per square meter

and distance from a light source = y meter.

Now x ∝ $\frac{1}{y^{2} }$

Or $x=\frac{k}{y^{2} }$ [k = proportionality constant]

Now we will find the value of k.

k = xy²

k = 120×(6)²

k = 4320

We have to calculate the distance of the source if illuminance of the surface is 30 lumens per square meter.

$30=\frac{4320}{y^{2}}$

y² = $\frac{4320}{30}$

y² = 144

y = √144 = 12 meters

So the source of the light will be shifted away from the surface = 12 - 6 = 6 meters.

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2 years ago

Six oranges cost $ five dollors how much does one orange cost

Yanka [14]

0.89 cents per orange. $5.34/6 = 0.89 cents.

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2 years ago

What would you multiply by to find 120% of a number?

Darina [25.2K]

You would multiply by 1.2 for example if you wanted to find 120% of 100 you would multiply by 1.2 and get 120

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2 years ago

What is the standard deviation of the data set?

Temka [501]

The Standard Deviation is a measure of how spread out numbers are. Standard deviation can be calculated by the expression as follows:

s = √∑(x - x(mean))^2/n-1

x(mean) = 24

s = √∑(x - 24)^2 / 7-1
<span>s = 6.11

Hope this answers the question. Have a nice day.</span>

5 0

3 years ago