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Lina20 [59]
2 years ago
6

Help please fast:):):):):):

Mathematics
2 answers:
pochemuha2 years ago
7 0
C. is not a function since all the F9x) numbers are identical
Elenna [48]2 years ago
5 0
Its D  because there are duplicate values of x in the table (there are  3  values of x = 2 and  2 values of x = 0.
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The sum of the dibits of a two digit number is 15. The number obtained by interchanging its digits exceeds the given number by 9
QveST [7]

Answer:

  78

Step-by-step explanation:

Interchanging the digits of a 2-digit number changes the value by a multiple of 9. The multiple is the difference between the digits of the number.

So, we have two digits that add to 15, and have a difference of 9/9 = 1. Since you're familiar with your addition facts, you know that the two digits are 7 and 8. Since the number we're looking for is the smallest of the numbers you can make with those digits, ...

  the original number is 78.

_____

More formally, let t and o represent the tens and ones digits of the original number.

  t + o = 15 . . . . . . the sum of digits is 15

  (10o +t) - (10t +o) = 9 . . . . swapping digits increases the value by 9

The latter equation simplifies to ...

  9o -9t = 9 . . . . collect terms

  o - t = 1 . . . . . . divide by 9 . . . (note the difference of digits is 9/9=1)

Adding this to the first equation gives ...

  (t +o) +(o -t) = (15) +(1)

  2o = 16

  o = 8

  t = o -1 = 7

The tens digit is 7 and the ones digit is 8: 78.

3 0
2 years ago
Its #1 and this is for algebra 2
4vir4ik [10]
Hello! Hmm. Let’s see. I think it has to be 100x + 60y <= 600. The x variable represents the fast machine suits and the y variable represents the slow machine wet suits. You wrote the greater than or equal to sign, which is not correct. The maximum means no more than, which would mean the less than or equal to sign. The sign you wrote would mean at least that amount or more.
5 0
3 years ago
Area of the blue shaded region??? please show work​
konstantin123 [22]

Answer:

21

Step-by-step explanation:

you first look at the circle

next you see the numbers in the circle

after that you multiply the numbers together

so, 3 x 7 = 21

7 0
3 years ago
Hannah used to make 4 bags in one day. Now she can make 7 bags in day day. What is the percent increase in the number of bags sh
pashok25 [27]

Answer:

10%

Step-by-step explanation:

???? do it look like I know oh igghht its just ahbjomd chill

7 0
3 years ago
Read 2 more answers
Marsha has some math exercises to do for homework. She did one half during study period and two thirds of those remaining while
Paha777 [63]

Answer: She has 1 5/6 exercises for homework.

Step-by-step explanation:

1/2 + 2/3 = 1 1/6

2 * 3 = 6 3 * 2 = 6

1 * 3 = 3 2 * 2 = 4

4 + 3/ 3 + 3

7/6 = 1 1/6

So, she finished 1 1/6 of her problems.

3 - 1 1/6 = 1 5/6

3 - 1 = 2

2 - 1/6 = 1 5/6

8 0
3 years ago
Read 2 more answers
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