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3 years ago

ABC city residents vote on construction of a new playground. The number of votes in favor of playground was 3500

Mathematics

1 answer:

zubka84 [21]3 years ago

8 0

Answer:

70% in favor of building a new playground

3500 (in favor) + 1500 (against it) = 5000 (total number votes)

3500 (in favor) 1500 (against it)

------------------- = 0.7 / 70% ------------------- =0.3 / 30%

5000 (total) 5000 (total)

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What is the answer to 2 3/4 x 3 1/2 in fraction form

Dovator [93]

Answer:

77/8 or 9 5/8

The drawings will help

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3 years ago

Alice cycles to Carla's house at 12 mph and returns by car at 36 mph. If the round trip takes 1 hour, how far away from Carla do

Eduardwww [97]

Answer:

Alice lives 9 miles far away from Carla.

Step-by-step explanation:

Given:

Alice cycles to Carla's house at 12 mph and returns by car at 36 mph.

If the round trip takes 1 hour.

Now, to find the distance from Carla to Alice house.

So, let the distance between the houses of Carla and Alice be $x$ .

Now, we solve by using the formula:

Distance/speed = time

Alice cycles to Carla house = $\frac{x}{12}$

And return by car = $\frac{x}{36}$

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Adding both the distance to get the value of x:

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3 years ago

Find the exact value of sin –255°.

alekssr [168]

Answer:

sin(-255°) = √2 + √6/4

Step-by-step explanation:

We need to find sin -255°

We know that sin(-a) = - sin(a)

so, sin(-255°) = - sin 255°

We know that 180° + 75° = 255°

Now we can write sin(255°) = sin(180° + 75°)

We can use the identity:

sin(x+y) = sin(x) cos(y)+cos(x)sin(y)

x = 180° , y = 75°

Solving,

sin(x+y) = sin(x) cos(y)+cos(x)sin(y)

sin(180° + 75°) = sin(180°) cos(75°)+cos(180°)sin( 75°)

sin(180°) = 0

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cos(180°) = -1

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Putting values,

sin(180° + 75°) = 0 (√6 -√2/4) + (-1)(√2 + √6/4)

sin(180° + 75°) = -(√2 + √6/4)

We know that sin(-255°) = -sin(255°)

Putting value of sin(255°)

sin(-255°) = -(-(√2 + √6/4))

sin(-255°) = √2 + √6/4

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4 years ago

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Answer:

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