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yulyashka [42]
3 years ago
13

Use the number line to show and explain why 4/10 ÷ 2 and 4/10 × 1/2 both equal 2/10

Mathematics
1 answer:
Vesna [10]3 years ago
4 0

Step-by-step explanation:

When you divide by a number, you basically are multiplying by the reciprocal

The reciprocal of 2 is 1/2

4/10 ÷ 2 = 4/10 × 1/2 = 2/10

4/10 × 1/2 = 2/10

Using a number line,

Start at 4/10 and move down by 2 until you reach 0

Start at 4/10 and move up by 1/2 from 0 until you reach 4/10

(Count the number of humps)

Both will be the same

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You are standing at point C, 45 feet from the Point State Park fountain in Pittsburgh, PA. The distance from you to a point of t
bearhunter [10]

The tangent line DC is perpendicular to the radius of the park

The length of AC is 245 feet

<h3>How to determine the distance AC?</h3>

To calculate the distance AC, we start by calculating the length of AB using:

DC^2 = (BC + AB) * BC

So, we have:

105^2 = (45 + AB) * 45

Evaluate the exponent

11025 = (45 + AB) * 45

Divide both sides by 45

245 = 45 + AB

Rewrite as:

AB + 45 = 245

From the figure, we have:

AC = AB + 45

Substitute AB + 45 = 245

AC = 245

Hence, the length of AC is 245 feet

Read more about line of tangents at:

brainly.com/question/6617153

6 0
2 years ago
Which is bigger 5.7 or 5.77
wolverine [178]
5.77

By 0.07

Because if you subtract 0.07 from 5.77, you get 5.7, so it must be smaller.
7 0
3 years ago
Read 2 more answers
C&amp;A Museum has three million visitors per year. Each visitor spends an averageof 1 hour in the museum. What is the average n
Alona [7]

Answer:

1250 visitors per day

Step-by-step explanation:

Number of visitors per year = 3,000,000

Number of days open per year = 300

Number of hours = 9a.m to 5pm = 8 hours

Number of visitors per hour :

Number of visitors per year / (number of days per year * number of hours per day)

3000000 / (300 * 8)

3000000 / 2400

= 1250 visitors per day

8 0
3 years ago
A spinner is divided into fourths and numbered 1 through 4. Jake spins the spinner and tosses a coin. What are all the possible
MaRussiya [10]

Answer:

Total number of possible outcomes in the sample space will be 8

Step-by-step explanation:

Given that,

A spinner is divided into fourths and numbered 1 through 4.

Jake spins the spinner and tosses a coin.

So,

Spinner has divided in to fourths means four parts of spinner such as : 1,2,3,4.

possible outcomes when a coin is tossed : Head(H)\ & \ Tail(T)

Now, when both spinner spins and coin tossed. possible outcomes are

                                          1H,1T\\2H,2T\\3H,3T\\4H,4T

Thus, these are the possible outcomes of given situation.

therefore,

Total number of possible outcomes in the sample space will be 8.

3 0
3 years ago
A Water flows through a pipe at a rate of 10 milliliters every 8.5 seconds. Express this
Alexandra [31]

Answer:

The answer to the nearest hundredth is 0.07 liters per minute

Step-by-step explanation:

In this question, we are told to express the given metric in liters per minute.

The key to answering this question, is to

have the given measurements in the metric in which we want to have the answer.

Hence, we do this by converting milliliters to liters and seconds to minute.

Let’s start with milliliters;

Mathematically;

1000 milliliters = 1 liters

10 milliliters = x liters

x * 1000 = 10 * 1

x = 10/1000

x = 1/100

x = 0.01 liters

For the seconds;

We need to convert the seconds to minutes;

Mathematically;

60 seconds = 1 minute

8.5 seconds = y minutes

60 * y = 8.5 * 1

y = 8.5/60

y = 0.14167 minutes

Now, our rate of flow is liters per minute, that means we have to divide the volume by the time;

Hence, we have ;

0.01/0.14167 = 0.070588235294

Which to the nearest hundredth is 0.07

6 0
3 years ago
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