A hiker started her hike at 0.2 mi below sea level. At the end of her hike, she was 1.4 mi above sea level.What vertical distance did she hike?

Answers

Answer 1

Answer: 1.6 miles, because she started at -0.2, meaning you have to add another 0.2 to the total she hiked vertically. If she'd started 0.2 above sea level, you'd have to subtract 0.2 from 1.4.

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Answers

That's a handsome list of numbers you've got there.

Do you have a question to ask ?

A bull’s-eye with a 4-inch diameter covers 20 percent of a circular target. What is the area, in square inches, of the target?

Answers

Area of a circle is found using the formula: Area = π * r^2

Using 3.14 for π

Area of the bull'e eye = π * 2^2 = 4π = 4 * 3.14 = 12.56 square inches.

This is 20% of the entire target.

To find the area of the entire target, divide the area of the bull's eye by the percentage:

Area = 12.56 / 0.20 = 62.8 square inches.

Round the answer as needed.

Answer:

Area of target = 62.8 inch²

Step-by-step explanation:

A bull’s-eye with a 4-inch diameter covers 20 percent of a circular target.

Diameter of bull's eye = 4 inch

$\texttt{Area of bull's eye = }(\pi* 4^2)/(4)=12.56inch^2$

Given that bull’s-eye covers 20% of circular target.

$\texttt{Area of bull's eye = }(20)/(100)* \texttt{Area of target}\n\n\texttt{Area of target}* 0.2=12.56\n\n\texttt{Area of target}=(12.56)/(0.2)=62.8inch^2$

Area of target = 62.8 inch²

Why do whole numbers raised to an exponent get greater while fractions raised to an exponent get smaller

Answers

Any number greater than 1 gets greater, any number below 1 gets smaller , when 1 stays the same. Negative numbers are uncertian.

A plumber has a copper pipe 0.9 meter long. He cuts the pipe into 4 equal pieces. Find the length of each piece of meters. Rounds your answer to the nearest tenth of a meter.

Answers

0.9m = 90cm

90÷4 = 22.5cm = 0.225m ≈ 0.2m

25 divided by 405 with working

Answers

$25:405=(25)/(405)=(5\cdot5)/(81\cdot5)=(5)/(81)$

OR:
      0.0 6 1 7 2 5 9 2 3 4 5 6 7 9 0 1 2
   2 5.0 0    :4 0 5
   - 2 4 3 0
   7 0 0
      -     4 0 5
   2 9 5 0
   - 2 8 3 5
      1 1 5 0
   -     9 1 0
   2 4 0 0
   -    2 0 2 5
      3 7 5 0
       -    3 6 4 5
   1 0 5 0
      -    9 1 0
      1 4 0 0
      -    1 2 1 5
   1 8 5 0
   -    1 6 2 0
      2 3 0 0
   - 2 0 2 5
   2 7 5 0
   -    2 4 3 0
3 2 0 0
   -    2 8 3 5
   3 6 5 0
-    3 6 4 5
5 0 0
   -    4 0 5
   9 5 0
   - 8 1 0
   1 4 0

We've got the same difference before. That means numbers will be repeated.
So:
25:405 = 0.0 6 1 7 2 5 9 2 (3 4 5 6 7 9 0 1 2)

What's the answer to this math problem

Answers

Total number of marbles:
75 + 50 + 100 + 25 = 250

Probability of selecting a red marble:
25/250 (since 25 out of 250 marbles are red)
Since the top and bottom of this fraction are both divisible by 25, we can go ahead and divide them both by 25, simplifying to 1/10.

Probability of selecting a green marble:
50/250
Simplifies to 2/10
Simplifies to 1/5.

Probability of selecting a blue or orange marble
(75+100)/250
175/250
Simplifies to 7/10.

To find the probability that each event occurs in order, simply multiply them all together.

$(1)/(10)*(1)/(5)*(7)/(10)=(1*1*7)/(10*5*10)=\boxed{(7)/(500)}$

Answer:

7/500 or Answer Choice B

Step-by-step explanation:

1. First find the total # of ALL the marbles in the bag. (75 + 50 + 100 + 25 = 250)

2. Then define the percentage of each marble color in said bag.

blue: 75 out of 250 (75/250) = 30%
green: 50 out of 250 (50/250) = 20%
orange: 100 out of 250 (100/250) = 40%
red: 25 out of 250 (25/250) = 10%

3. Double check that the percentage = 100. (yes)

4. Understand that she could pick the said marble colors not in the order that was specified, so to determine the chances of picking the right colors in the right order. Multiple the values.

red marble: 1/10 chance

green marble: 2/10 or 1/5 chance

blue OR orange (this means add together and then divide by total: 250): 7/10 chance

multiply fractions: 1/10 x 1/5 x 7/10 = 7/500 (this is simplified)

5. Select Answer Choice (B)

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