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valkas [14]
3 years ago
9

Please help very urgent

Mathematics
1 answer:
pashok25 [27]3 years ago
8 0

Answer:

y = 4x - 2

Step-by-step explanation:

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A circle has a circumference of 3.14<br> What is the diameter of the circle?
Sonbull [250]
3.82 is the answer for that but what is the unit of measurement

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4 years ago
A moving trailer with a speed of 70km/h slows down its speed by 15% within 30 seconds. calculate the declaration of the trailer.
antoniya [11.8K]

Answer:

declaration = - 0.55 m/s²

Step-by-step explanation:

The declaration is a negative accelaration.

Therefore:

a = \frac{v-u}{t}

a      = ?

v      = 70 of 15% = 10.5 km/h to m/s = 2.9 m/s

u = 70 km/h to m/s = 19.4 m/s

t = 30 seconds

a = \frac{2.9-19.4}{30}\\

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7 0
3 years ago
The ratio between the volumes of two cubes is 125 to 216. what is the ratio between their respective surface areas?
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Volume of a cube is length * width * height. Because it's a cube, all of these lengths are the same measurement so rather than doing V = l*w*h, we can do one of the measurements cubed, let's call it x.

So Volume = x³. So if we are given the volume, we can the length by doing the cube root. 

∛125 = 5
∛216 = 6

Surface area of a cube = 6x². So now we plug both of these measurements into the formula. 

For 5:

SA = 6(5)² = 6(25) = 150

For 6:

SA = 6(6)² = 6(36) = 216

The ratio of their surface areas is 150:216 or if you simplify it by dividing both by the GCF of 6, 25:36
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Write the time 8:30 then write this time in two other ways using words
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4 years ago
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