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2 years ago

Which representation shows y as a function of x?

Mathematics

2 answers:

AveGali [126]2 years ago

8 0

I think the correct answer A is a function

Aleks [24]2 years ago

6 0

Option A would be a function because the input (x) must be paired to directly 1 unique output (y). However the outputs can be paired to different inputs.

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① 5J+2S =12.20 ② 5J+ 10S =15.80 elimination method

hram777 [196]

Answer:

Step-by-step explanation:

$5J +2S =12.20 ........(1)\\5J+10S=15.80......(2)\\Multiply \:equation \:(1)\:by\:the\:coefficient\:of\:x\:in equation\:(2)\\\\Multiply\:equation(2)\: by\: the\: coefficient\:of \:x\: in \:equation (1)\\\\5J +2S =12.20 ........(1) \times 5\\5J+10S=15.80......(2)\times 5\\\\25J+10S=61......(3)\\25J+50S = 79......(4)\\Subtract\:equation\:(4)\:from\: equation\: (3)\\-40S =-18\\\frac{-40S}{-40}=\frac{-18}{-40}\\ S = 9/20\\$

$Substitute \:9/20\:for \:x \:in\:equation\:(1)\:or \:equation\:(2)\\5J+2S = 12.20\\5J +2(9/20) =12.20\\5J +9/10=12.20\\5J=12.20-9/10\\5J=113/10\\Cross-Multiply\\50J = 113\\J = 113/50$

4 0

3 years ago

9/10( -2/3) ( symplify )

levacccp [35]

-3/5 because you multiply 9/10 by -2/3

4 0

3 years ago

Which of the following lines is perpendicular to the equation y= -2x+8

Varvara68 [4.7K]

Answer:

Step-by-step explanation:iii

8 0

3 years ago

? Question

uysha [10]

Answer:

B1: -9, -3, and 10

B2: 5

Step-by-step explanation:

mark brainliest

8 0

3 years ago

Sierra walks her dog Pepper twice a day. Her evening walk is two and a half times as far as her morning walk. At the end of the

NARA [144]

Answer:

(30*2)/49

Step-by-step explanation:

let her morning walk distance be x

her evening distance walk =2 1/2 x

= 5x/2

her daily walk distance =5x/2+x

= 5x/2+2x/2=7x/2

her weekly walk distace= 7x/2*7=49x/2=30miles

x= (30*2)/49

6 0

3 years ago