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3 years ago

A circle with a radius of 1 unit

Mathematics

1 answer:

oee [108]3 years ago

8 0

Answer:

C= 6.28 A: 3.14

Step-by-step explanation:

Circumference of a circle is 2* pi * r

Based on this, we can subsitute r for 1

2* pi * 1= 2pi which is around 6.28 units

Area of a circle is pi* r* r

Based on this, we can subsitute r for 1

pi* 1* 1= pi= 3.14 units squared

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Quick help 1/2x+3<2x-6

Ad libitum [116K]

Answer:

x>6

*math work*

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3 years ago

4x+3y=1 2x+5y=11 solve for x and y

Ann [662]

4x+3y=1 2x+5y=11

We'll need to use system of equations for this one.

4x+3y=1

3y=1-4x

y=-4/3x+1/3

2x+5y=1

5y=1-2x

y=-2x/5+1/5

Set these two equations equal to each other and solve for x.

-2x/5+1/5=-4/3x+1/3

x=1/7

Then plug x in to solve for y.

y=-2(1/7)/5+1/5

y=1/7

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4 years ago

The first week of January there are 49 dogs and 28 cats in an animal shelter. Throughout the month the ratio of dogs to cats rem

Rudiy27

Answer:

Step-by-step explanation:

If the ratio of dogs to cats is 49:28, as an actual ratio (fraction), this is

$\frac{d}{c}:\frac{49}{28}$

We can reduce that to make the numbers smaller without changing the ratio. reducing gives us

$\frac{d}{c}:\frac{7}{4}$

We will use that ratio now to set up a proportion that involves a given number of cats and an unknown number of dogs. Keeping dogs on top and cats on bottom,

$\frac{d}{c}:\frac{7}{4}=\frac{x}{20}$

Cross multiply to get

4x = 140 so

x = 35

According to the ratio of dogs to cats, if there are 20 cats, there will be 35 dogs.

3 0

4 years ago

Write the expression in radical form.

Effectus [21]

I think it would be B

6 0

3 years ago

Read 2 more answers

The bus ride to school is 50 minutes long. If the

gtnhenbr [62]

Answer:

the answer to that problem is:67 min.

Step-by-step explanation:

50+12+5=67 min.

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3 years ago

Read 2 more answers

A circle with a radius of 1 unit​

A circle with a radius of 1 unit