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Lubov Fominskaja [6]
3 years ago
13

I need help with this pls! 15 points!

Mathematics
1 answer:
OLga [1]3 years ago
8 0

Answer:

d

Step-by-step explanation:

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If x&gt;7, then |x|&gt;7. |y|&gt;7, so y=7<br><br><br> Valid or invalid?
Alex

\text{if }x>7\text{, then }|x|>7 is a valid argument

|y|>7\text{, so }y=7 is not a valid argument

For the first argument: \text{if }x>7\text{, then }|x|>7

From the definition of absolute value function

|x|=x   if x\ge0

That is every positive number is its own absolute value. Since

x>7\implies x\ge0,

we can argue that

x>7\implies |x|>7

so the first argument is valid

For the second argument: |y|>7\text{, so }y=7

From the definition of absolute value function

|y|:=\left \{ {y\text{  if }y\ge0}\atop{-y\text{  if }y

This means that

|y|>7:=\left \{ {y>7\text{  if }y\ge0}\atop{-y>7\text{  if }y

or

|y|>7:=\left \{ {y>7\text{  if }y\ge0}\atop{y

no part of the definition allow for the option y=7. So the second argument is not valid.

Learn more here: brainly.com/question/11897796

7 0
3 years ago
Convert 1.375 to decimal fraction؟
AlexFokin [52]

Step-by-step explanation:

11/8 if I'm not wrong

...

5 0
3 years ago
Read 2 more answers
Please explain how to do it
Juli2301 [7.4K]

Answer:

k = 4

Step-by-step explanation:

if direct variation exists,

input * k = output

here, number of baskets = input and cost = output

3 * k = 12

5 * k = 20

6 * k = 24

8 * k = 32

15 * k = 60

does this always work for one k?

let's try it out

3 * k = 12

divide both sides by 3 to solve for k

k = 4

5 * k = 20

divide both sides by 5 to solve for k

k = 4

6 * k = 24

divide both sides by 6 to solve for k

k = 4

8 * k = 32

divide both sides by 8 to solve for k

k = 4

15 * k = 60

divide both sides by 15 to solve for k

k = 4

as k = 4 no matter what, there is a direct variation with k = 4

4 0
3 years ago
Q-12=89 what is the value of q
Alla [95]
Q-12=89
  +12  +12
Q=89+12
Q=101
4 0
3 years ago
Read 2 more answers
Can someone give me the answer I need a A in math
Grace [21]
The Answer is 8.06


Work:
4 squared + 7 squared = C squared

16 + 49 = C squared

65 = C squared

√65 = √C squared

8.06 = C/length
6 0
3 years ago
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