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Nuetrik [128]
2 years ago
12

Is (2, -4) a solution to the inequality 2x - 3y < 15? Yes or No

Mathematics
1 answer:
miss Akunina [59]2 years ago
7 0

Answer:

No.

Step-by-step explanation:

We substitute the values x = 2 and y = -4 into the inequality.

Left side = 2(2) - 3(-4) = 4 + 12

= 16

Now the right side is 15 so we get 16 < 15 which is incorrect.

So (2, -4) is not a solution.

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Solve for the indicated variable.<br> 2a + 2b = c for b
AysviL [449]

Answer:

2a+2b=c

2b=c-2a

b=(c-2a)÷2

5 0
2 years ago
The total cost of a sweater and a pair of pants was $89.47. If the price of the sweater was $8.53 less than the pair of pants, w
Strike441 [17]

Answer:

Let S = price of sweater

Let P = price of pants

S + P = 89.47 because that was the total spent

S = P - 8.53   because the sweater is 8.53 less than pants

Substitute P-8.53 in place of S in the

1st equation and solve for P

P - 8.53 + P = 89.47

2P - 8.53 = 89.47     add 8.53 to both sides

2P = 89.47 + 8.53

2P = 98.00  divide both sides by 2

P = 98.00/2

P = $49.00

S = P - 8.53

S = 49.00-8.53

S = $40.47

A sweater costs $40.47 and the pants cost $49.00

5 0
2 years ago
1) Evaluate the following expressions.show your work <br> a) 7(m - 8) for m = -4
Akimi4 [234]

Answer:

-84

Step-by-step explanation:

Since m=-4, we can plug -4 into the expression and use PEMDAS

7(m - 8)

7((-4)-8)

7(-12)

-84

4 0
3 years ago
I need help with this questions
Keith_Richards [23]
QS=7x-1
BC=5x-19
I think so...

8 0
3 years ago
Solve the equation. 3|3k| = 27
Ratling [72]
The answer is B. -3, 3
This is why:
3|3*3| = 27
3|9| = 27
3*9 = 27
The same will happen with -3 since this | means the distance from the number to zero and in this case it is 3 units til you reach zero. So the answer is B. 3, -3

3 0
3 years ago
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