All categories

2 years ago

What value of "a" makes the system 3x-y=17 and ax+y=-7 have no solution?

Mathematics

1 answer:

Norma-Jean [14]2 years ago

5 0

Answer:

y=-7-ax

3x-(-7-ax)=17

3x+7+ax=17

3x+ax=10

x(3+a)=10

x=10,3+a=10 a=10-3 a=7

You might be interested in

Which of the following is a geometric sequence

Galina-37 [17]

Answer:

b i just know hahahhahahh

4 0

2 years ago

YALL NEVER ANSWER AH POOP plz help

lakkis [162]

Answer:

The given point A (6,13) lies on the equation. True

The given point B(21,33) lies on the equation. True

The given point C (99, 137) lies on the equation. True

Step-by-step explanation:

Here, the given equation is : $y =\frac{4}{3} x + 5$

Now,check the given equation for the given points.

1) A (6,13)

Substitute x = 6 in the given equation $y =\frac{4}{3} x + 5$

$y =\frac{4}{3} (6) + 5 = 4(2) + 5 = 8 + 5 = 13$

⇒ y= 13

Hence, the given point A (6,13) lies on the equation.

2) B (21,33)

Substitute x = 21 in the given equation $y =\frac{4}{3} x + 5$

$y =\frac{4}{3} (21) + 5 = 4(7) + 5 = 28 + 5 = 33$

⇒ y = 33

Hence, the given point B(21,33) lies on the equation.

3) C (99, 137)

Substitute x = 99 in the given equation $y =\frac{4}{3} x + 5$

$y =\frac{4}{3} (99) + 5 = 4(33) + 5 = 132 + 5 = 137$

⇒ y = 137

Hence, the given point C (99, 137) lies on the equation.

7 0

2 years ago

Read 2 more answers

Which factors can be multiplied together to make the trinomial 5x2 + 8x – 4? Check all that apply. (x + 1) (2x + 1) (x + 2) (5x

andreyandreev [35.5K]

Answer:

(5x-2) and (x+2)

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

The number that is multiplied by a power of 10 in scientific notation must be in between 1 and 10

vazorg [7]

Answer:

Thats false

Step-by-step explanation:

When you multiply by a power your basically multiplying that number b itself 10x except for 1

4 0

2 years ago

Lila hired a chainsaw for a week.

Allisa [31]

Answer:

She payed $269 for the chainsaw :)

4 0

2 years ago

Read 2 more answers