2 years ago

How to find the circumference for a 3 inch circle using 3.14 for pi

Mathematics

1 answer:

Vladimir79 [104]2 years ago

6 0

Answer: C is approximately 9.42.

Step-by-step explanation: the radius is 1.5 and the C formula is 2 x pi x r = 2 (3.14)(1.5)

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What is the solution of x + 1/5 (x - 1) = 1?

Tanzania [10]

Answer:

Step-by-step explanation:

x-1+ 1 /5*( x-1)=0

(x-1)*6/5=0

x=1

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3 years ago

How many 20 degree angles does it take to make a full turn?

scoundrel [369]

There is 360* in a circle, so you would divide 360 by 20 to get 18.

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3 years ago

1/2(15)(13+17) Whats the answer?

lidiya [134]

1/2(15)(13+17)

15/2(13+17)

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3 years ago

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2 years ago

Kay has 28 coins which includes nickels and dimes if the total is 2.35$, how many of each coin does Kay have?

m_a_m_a [10]

Answer:9 nickels and 19 dimes.

Step-by-step explanation:

Let $n$ be the number of nickels Kay has.

Let $d$ be the number of dimes Kay has.

Value of $1$ nickel is $ $0.05$

Value of $n$ nickels is $ $0.05n$

Value of $1$ dime is $ $0.1$

Value of $d$ nickels is $ $0.1dn$

Given that Kay has a total of $28$ coins.

So, $n+d=28$ ...(i)

Given that Kay has a total value of $ $2.35$

So, $0.05n+0.1d=2.35$ ...(ii)

Using (i) and (ii),

$0.05n+0.1(28-n)=2.35\\0.05n+2.8-0.1n=2.35\\2.8-2.35=0.05n\\0.45=0.05n\\n=9$

$d=28-n=28-9=19$

4 0

3 years ago