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My name is Ann [436]
3 years ago
10

F the point (a, 7) lies on the graph of the equation 5x - y = 8, then a=

Mathematics
1 answer:
Ghella [55]3 years ago
7 0
(a,7) lies on the equation of 5x-y=8, that means we solve for x when y=7.

5x-(7)=8
5x=8+7=15
x=3
=>
a=3
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Convert to smaller parts if possible​
Triss [41]

Answer:

Row 1 -

1/3, 1/2, 1/3, 2/3, 2/3, 8/15, 1/2.

Row 2 -

3/4, 3/4, 2/7, 21/25, 5/6, 7/9, 1/3.

Row 3 -

3/20, 7/20, 3/25, 3/5, 3/5, 1, 3/2 OR 1 1/2.

Hope this helped you out.

7 0
2 years ago
To solve work problems, find the portion of the job each person completes in 1 unit of time. The sum of these portions is the po
Gwar [14]

Answer:

  4.8 minutes

Step-by-step explanation:

Using the given hint, working together, the amount of floor mopped in 1 minute is ...

  1/8 + 1/12 = 3/24 +2/24 = 5/24 . . . . jobs/minute

The reciprocal of that is the rate in terms of minutes per job. Thus the entire job takes 24/5 = 4.8 minutes.

6 0
3 years ago
-15/-18=10/x<br> what is X?
xenn [34]

Answer:

12

Step-by-step explanation:

(-15)/(-18) = 10/x cross multiply expressions

-15x = -180 since both sides are negative we can write without the sign

15x = 180 divide both sides by 15

x = 12

7 0
2 years ago
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Can you plz help me I don’t understand
amid [387]

The constant of proportionality is 5. For every time the total area "A" is multiplied by one the length is multiplied by 5.

6 0
3 years ago
What is a 20% tip of $30
ser-zykov [4K]
$6!
10% is $3, you just move the decimal to the left one space, and that's 10%, so double is $6
5 0
3 years ago
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