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3 years ago

A padlock has a 4 digit key code

Mathematics

1 answer:

german3 years ago

6 0

Where is the rest of the question?

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Freddie swam 5/7 laps on Monday, Tuesday, and Wednesday. 1/4 laps on Thursday and Friday. How many laps did he swim in total?

blagie [28]

Answer: 27/28 or 0.9642857

Step-by-step explanation:

5/7 + 1/4 = 5 · 4/7 · 4 + 1 · 7/4 · 7 = 20/28 + 7/28 = 20 + 7/28 = 27/28

6 0

3 years ago

A robot can complete 8 tasks in 3/10 hour. Each task takes the same amount of time. How long does it take the robot to complete

Vsevolod [243]

Answer:

Robot will take $\frac{3}{80}$ hour to complete each task.

The robot can complete $26\frac{2}{3}$ tasks in one hour.

Step-by-step explanation:

We have been given that a robot can complete 8 tasks in 3/10 hour. Each task takes the same amount of time.

To find the time taken by robot to complete each task we will divide total time taken to complete 8 tasks by 8 as:

$\text{Time taken by robot to complete each task}=\frac{3}{10}\div 8$

$\text{Time taken by robot to complete each task}=\frac{3}{10}\div \frac{8}{1}$

Now we will convert division problem into multiplication problem by flipping the 2nd fraction.

$\text{Time taken by robot to complete each task}=\frac{3}{10}\times \frac{1}{8}$

$\text{Time taken by robot to complete each task}=\frac{3}{80}$

Therefore, robot will take $\frac{3}{80}$ hour to complete each task.

To find tasks completed by robot in one hour we will use proportions.

$\frac{x}{1\text{ hour}}=\frac{8}{\frac{3}{10}}$

$\frac{x}{1}=\frac{80}{3}$

$x=\frac{80}{3}$

$x=26\frac{2}{3}$

Therefore, the robot can complete $26\frac{2}{3}$ tasks in one hour.

6 0

3 years ago

some say that to brew an excellent cup of coffee, you must have a brewing temperature off 200 degrees, plus or minus five degree

ASHA 777 [7]

Your equation for the maximum brewing temperature should be x = 200 + 5 because according to your word problem, the temp. can be five degrees above 200 degrees.

x = 200 + 5
x = 205

Your equation for the minimum brewing temperature should be x = 200 - 5 because according to your word problem, the temp. can be five degrees below 200 degrees.

x = 200 - 5
x = 195

8 0

3 years ago

Research has shown that approximately 1 woman in 600 carries a mutation of a particular gene. About66 % of women with this muta

UNO [17]

Answer:

add otherwise I don't know sorry im on that question

Step-by-step explanation:

6 0

3 years ago

Could I get some help here <br> I literally have the iq of a 2nd grader

ahrayia [7]

Answer:

x = 16

Step-by-step explanation:

Supplementary angles = 180

K + L = 180

137 + 3x - 5 = 180

132 + 3x = 180

3x = 180 - 132

3x = 48

x = 48/3

x = 16

8 0

3 years ago