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lisov135 [29]
3 years ago
8

A coordinate plane with Number of Text Messages on the x-axis and Number of Minutes Used on the y-axis, with points plotted at,

(10, 20), (20, 40), (30, 60), and (40, 80).
A prepaid cell phone charges a preset number of minutes to use text messaging. The graph represents y, the number of minutes used for x, the number of text messages sent and received. Is there a direct variation? Which equation represents the relationship?

Yes, y = 2x.
Mathematics
2 answers:
GalinKa [24]3 years ago
4 0

Answer:

yes, y=2x is correct

Step-by-step explanation:

daser333 [38]3 years ago
3 0

Answer:

Yes, y= 2x

Step-by-step explanation:

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3. Which two expressions are equivalent for any value of y? *
-Dominant- [34]

Given:

The pair of expressions in the options.

To find:

The two expressions are equivalent for any value of y.

Solution:

Two expressions are equivalent for any value of y, iff they are equivalent.

3(3y+3)=3(3y)+3(3)

3(3y+3)=9y+9

Clearly, 3(3y+3) is not equivalent to 6y+6 or 9y+6. So, options A and B are incorrect.

9(y+3)=9(y)+9(3)

9(y+3)=9y+27

9(y+3)=27+9y

The expression 9(y+3) is not equivalent to 12+9y. So, option C is incorrect.

The expression 9(y+3) is equivalent to 27+9y.

Therefore, the correct option is D.

5 0
3 years ago
Ms. Cathy bought a package of pencils. Out of every 10 pencils, 8 are black. If there are 30 pencils in the pack, what fraction
balu736 [363]

Answer:

Fraction: 24/30 Percentage: 80%

Step-by-step explanation:

It might want a simplified version of the fraction, so the answer for that one could be 4/5. I hope this helps :)

5 0
3 years ago
3. Mrs. Garcia's class sold bottles of lemonade for $1.36 each and Mr. Runner's class sold protein bars for $1.65 each. Together
podryga [215]

Answer:

324.6

Step-by-step explanation:

because Together, the classes sold 79 items and earned $118.17 for their school​

7 0
3 years ago
A patient is to take 7 mL of amoxicillin 250 mg/5 mL. How many milligrams?
Anna007 [38]

Step-by-step explanation:

that means that in 5 ml there are 250mg.

and that means that in 1 ml there are 250/5 = 50 mg.

and now we can find out the mg in 7 ml (by multiplying everything by 7) :

7 ml = 50 × 7 = 350 mg

3 0
2 years ago
Can someone answer this for me
Sergio039 [100]

Answer:

B goes to the neither parralell.A goes to the 2nd one and the last one goes to parell

Step-by-step explanation:

5 0
3 years ago
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