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2 years ago

Find the length of an arc of a 8inch radius circle if the arc measures 45 degrees

1 answer:

4 0

45° is exactly 1/8 of a full circle (45/360 = 1/8) <span>
So the length of the arc would be 1/8 of a full circumference:
C = 2π r
C = 2π(8)
C = 16π

Take 1/8 of this:
1/8C = (1/8)16π = 2π

Answer:
Exact answer --> 2π inches
(Approx. answer --> 6.28 inches)</span>

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a section of ground measures 1.5 cubic meters and contains 0.78 gram of gold. what is the amount of gold per cubic meter? explai

I am Lyosha [343]

The answer

<span>the amount of gold per cubic meter can be found by the ratio

0.78 g /1 </span><span>.5 cubic meters = 0.52 g / cubic meter,
proof
it was said </span><span>the amount of gold per cubic meter (Density)</span>

7 0

3 years ago

A word problem for 7x +10y =100

aivan3 [116]

Anwser: 100/17

Decimal term: 5.88235294

Mixed number: 5 15/17

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3 years ago

Find three consecutive odd integers such that 10 times the first, plus 10 times the second, equals 10 more than 10 times the thi

SIZIF [17.4K]

Answer:

Step-by-step explanation:

If x is the third number, then x−1 and x−2 are the second and first numbers.

10(x−2) + 10(x−1) = 10 + 10x

x − 2 + x − 1 = 1 + x

2x − 3 = 1 + x

x = 4

8 0

3 years ago

HELLPPP????? PLEASEEEESSSS

Verdich [7]

Answer:

$\boxed{43.48 \, \%}$

Step-by-step explanation:

The formula for calculating percentage is

$\text{Percentage} = \dfrac{\text{Part }}{\text{Whole}} \times 100 \, \%$

The "part" is the number of single-shot espressos

The "whole" is the total number of espressos.

$\begin{array}{rcl}\text{Total espressos} & = & 46\\\text{-Single-shot espressos} & = & 26\\\text{Double-shot espressos} & = & 20\\\end{array}$

$\text{ \% Double-shot}=\dfrac{20}{46} \times 100 \, \% =\mathbf{43.48 \, \%}\\\\\boxed{\mathbf{43.48 \, \%}} \text{ of the espressos were double-shot}$

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3 years ago

Ian walked 4 miles in 90 minutes. Bob walked 7 miles in 2.5 hours. Are these rates in proportion? If no, who walked faster?

Yuliya22 [10]

Answer:

<h3>Bob walked faster than Ion.</h3>

Step-by-step explanation:

90/4=22.5

Ian - 1 mile in 22.5 minutes

2x60=120

60/2=30

120+30=150

150/7=21.43

Bob - 1 mile in 21.43

5 0

2 years ago

Read 2 more answers