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3 years ago

14

Task 1:Different ways to represent Relations. Complete the table with the different ways.. Complete the table with the different

ways.

1 answer:

rewona [7]3 years ago

8 0

Domains are the first sets of numbers they are also the x and the range is the second sets of number and is the y

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Pamela's age is three times Jiri's age. The sum of their ages is 20 . What is Jiri's age?

navik [9.2K]

Answer: Jiří is 5 years old.

Step by step:

Let x denote Jiří's age in years. Then Pamela's age is 3x. Their sum is x + 3x = 20. So we solve for x:

x + 3x = 20

4x = 20

x = 5

Jiří's age is 5 years

7 0

3 years ago

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An antique store increases all of its prices by $40\%$, and then announces a $25\%$-off-everything sale. What percent of the ori

Mandarinka [93]

Answer:

105%

Step-by-step explanation:

We'll analyse the question one step at a time

Let the original price be x.

Let y be the 40% increase

$y =x + 40\% *x$

Express as decimal

$y =x + 0.40 x$

$y =1.40x$

Let z be the 25% off sale

$z = (1 - 25\%) * y$

Express as decimal

$z = (1 - 0.25) * y$

$z = (0.75) * y$

$z = 0.75y$

Substitute 1.40s for y

$z = 0.75*1.40x$

$z = 1.05x$

Express 1.05 as a fraction

$z = 105\% * x$

<em>The percentage is 105%</em>

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3 years ago

7.10 is 1/10 of what number

dem82 [27]

7.10 is 1/10th of 71.

Simply multiply 7.1 by 10 to get 71.

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3 years ago

ANSWER FAST Jill had the following scores on her math quizzes 20 ,40, 40, 40 ,60 ,60 ,60 ,60 ,80, 80

andrew-mc [135]

Answer: 62.

Step-by-step explanation: The mean is the average. In order to find the average, we need to add all of the numbers up, then divide by the number of quizzes. So:

20 + 40 + 40 +40 + 60 + 60 + 60 + 60 + 80 + 80 + 80 + 80 + 100 = 800

800 / 13 = 61.5, appr. 62.

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4 years ago

Is this right?<br> 3/4*5/9= 5/12 in lowest terms

Bumek [7]

Yes, the answer is 5/12 you are correct.

8 0

3 years ago

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