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polet [3.4K]
3 years ago
5

70 - q -q - 2q = 80 plz help me i don't get it

Mathematics
1 answer:
Montano1993 [528]3 years ago
3 0

Answer:

the answer is:    q = -2.5

Step-by-step explanation:

70 - q - q - 2q = 80

70 - 4q = 80

-4q = 10

q = -2.5

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2 x y`- 3 y=0
riadik2000 [5.3K]

Answer:

2xy-3y=0

y(2x-3) =0

2x-3=0

2x=3

x=3/2

3 0
3 years ago
Heather spent $38.50. heather spent 1/3 of what anthony spent​
mariarad [96]

Answer:

Anthony spent $115.50 hope this helps

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Help please ! Please
gizmo_the_mogwai [7]

Answer:

15, 8, 25 The teacher payed 0.40 per book.

Step-by-step explanation:

4/10 = 2/5 Simplify the 4/10 to find the unit rate.

15: 2/5 = 6/x Set up your proportion.

    2x   =30 Cross multiply

    /2      /2 Divide both sides by 2 to isolate x

     x     =15

8: 2/5 = x/20 Set up proportion

   40  =5x Cross multiply

    /5     /5 Divide both sides by 5 to isolate x

     8  =x

25: 2/5 = 10/x Set up proportion

      2x  =50 Cross multiply

       /2     /2 Divide both sides by 2 to isolate x

        x   =25

Graph: y=mx+b To graph, you will need to use y=mx+b format

           y= 2/5 x+2 2/5 is your unit rate. Your rate changes every 2 books bought. To graph, start at (0,2) and go up 2 and to the right 5, plot. Continue moving up 2 and to the right 5 to graph.

The teacher payed 0.40 per book because 2/5 simplifies to 0.40.

   

8 0
3 years ago
Six more than nine times a Number is 456
Nuetrik [128]
Let the number = x
It would be: 9x + 6 = 456
9x = 456 - 6
9x = 450
x = 450 / 9
x = 50

In short, Your Answer would be 50

Hope this helps!
8 0
3 years ago
12 girls are having a sleepover at a house, the food there can last them for 10 days. If 3 more girls came over, how long will f
FrozenT [24]

Answer:

The answer is 8

Step-by-step explanation:

12*10=120 120/15=8

8 0
3 years ago
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