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Nadya [2.5K]
3 years ago
7

Determine which relation is a function.

Mathematics
1 answer:
leonid [27]3 years ago
6 0
The A is a function, because all the values of the independent variable (the first value of the ordered pairs) are related to only one value, i.e. have only one image.

In B - 2 has two different images: 3 and 1. That makes that this is not a function.

In C, 3 has two different images: 5 and 2. That makes that this is not a function.

In D, - 1 has two different images: 1 and 5. That makes that this is not a function.
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I WILL MARK YOU BRAINLYEST if you answer all of my problems !!!!!!!!!!!
sweet-ann [11.9K]
1) you can buy 6 candy bars because $5.10 / $0.85 =
6.
To check: 6*0.85=5.10

2) you can find the answer by adding 3 to 12. 3+12=15 n=15 and it said n can be greater than or equal so
N(greater than or equal to sign) 15.
To check: 15-3=12
12=12
16-3>12
13>12

7) x-7=12
+7 +7
X=19
To check: 19-7=12
12=12

8) y/8=7
*8 *8
Y= 56
To check: 56/8=7
7=7

9) 10-4x=6x
+4x +4x
10=10x
/10 /10
X=1
To check: 10-4(1)=6(1)
10-4=6
6=6


Hope this helped!
3 0
3 years ago
I’ll give brainlist award please answer
lina2011 [118]
For answering multiple choice, you can do the following:

Observe the diagram, noting that one curve has positive slope, and the other has negative slope.
Looking at the equations,
if x and y are on the same side of the equal sign, (which is the case here), then
- coefficients of x and y have equal signs (both+, or both -) then the equation has negative slope.
- coefficients of x and y have different signs (+-, or -+), then the equation has positive slope.
We see the second system has both equations with positive slope, and the third system has both equations with negative slopes.  They're out!

Next, we check the y-intercept of the first equation (by setting x=0),
first system: 0+2y=-10 => y-intercept=-5, slope=-1/2 Good
fourth system: 0-2y=-10 => y-intercept=+5  No good.

Finally, check the x-intercept of the second equation of the first system (by setting y=0)
first system: 3x-0=12 => x-intercept = 12/3=+4, slope = +3  good

So we conclude the first system is the correct answer.
5 0
3 years ago
Solve for h. 2h divided by 15 = 20 *
zvonat [6]
H is 2.5 because 2.5 x 2 is 5 and then you do 5 + 15 and you get 20
5 0
3 years ago
Read 2 more answers
How can I fing the volume of a fish tank?
likoan [24]

Answer:

You can measure from the inside of the tank or measure the outside and subtract the width of the tank walls to find the inside measurement. Next multiply the length width and depth measurements to find the cubic volume in cubic inches

Step-by-step explanation:

6 0
3 years ago
3.Find the area of Triangle and Parallelogram having base 13.5cm and height is 18cm.​
patriot [66]
  • Base=13.5cm
  • Height=18cm

\\ \sf\longmapsto Area=\dfrac{1}{2}Base\times Height

\\ \sf\longmapsto Area=\dfrac{1}{2}(18)(13.5)

\\ \sf\longmapsto Area=9(13.5)

\\ \sf\longmapsto Area=121.5cm^2

3 0
3 years ago
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