3 years ago

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

You might be interested in

Use complete the square to solve 5x²-7x-3=0

Yuki888 [10]

Step-by-step explanation:

ax2 + bx + c = 0

x12 = (-b ± √D) / 2a , D = b2 - 4ac .

5x2 + 7x + 3 = 0

a = 5 , b = 7 , c = 3

D = 49 - 60 = - 11 , x1 = (-7 - i √11) / 10

x2 = (-7 + i √11) / 10

3 0

3 years ago

Read 2 more answers

What is the sales tax of a $249 cell phone if the tax rate is 8%

raketka [301]

$19.92 is the answer

7 0

3 years ago

Read 2 more answers

The number math problems Michel can solve varies directly with the amount of time he spends solving math problems. Michel can so

Mama L [17]

Answer:

40 problems

Step-by-step explanation:

8 problems : 5 mins

? : 25 mins

8 x 5 = 40

40 problems

hope this helps

braonliest plz?

5 0

3 years ago

Read 2 more answers

Jamie had 5 1/4 cans if soup in her kitchen. She decided to use 3 1/9 of it. How much soup does she still have after making 3 1/

valina [46]

5 1/4 - 3 1/9
5 9/36 - 3 4/36
2 5/36 is final answer

5 0

3 years ago

A 4-meter ladder is placed against a wall so that it reaches a height of 3.7 m. To the nearest tenth of a meter, how far away fr

Ne4ueva [31]

Answer:

I have no idea im so sry jcfksafjehalcbhjoEwo

Step-by-step explanation:

NHJVGVGHCFGCGJ

3 0

3 years ago