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Phoenix [80]
3 years ago
5

Evaluate 3x - 4y + 11 for x = -2 and y = -1

Mathematics
2 answers:
katrin [286]3 years ago
7 0

Answer:

9

Step-by-step explanation:

Plug in -2 for x, and -1 for y, and solve:

3x - 4y + 11

3(-2) - 4(-1) + 11

Remember to follow PEMDAS. First, multiply. Remember, that when you multiply:

2 positive signs will result in a positive answer.

1 positive & 1 negative will result in a negative answer.

2 negative will result in a positive answer.

3 * -2 = -6

-4 * -1 = 4

-6 + 4 + 11 = 9

9 is your answer.

~

sukhopar [10]3 years ago
5 0

Answer:

Step-by-step explanation:

3x - 4y + 11

When x = -2 and y = -1

Then,

3(-2) -4(-1) + 11

-6 + 4 + 11

- 2 + 11

9

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a rectangular blue tile has a length of 4.25 inches and a width of 6.75 inches. a similar tile has a length of 12.75 inches.what
Iteru [2.4K]

Answer:

The width of the red tile would be 2.25 inches.

Step-by-step explanation:

Given blue tile has a length of 4.25 inches, and a width of 6.75inches.

Also, length of similar tile is 12.75 inches.

Let us assume x as the width of red tile.

It is given in the question that both tiles are similar.

So, their area will be the same.

Area of blue tile would be 4.25\times 6.75=28.6875\ inch^2

Area of red tile would be 12.75\times x

The area of blue tile would be equal to area of red tile.

28.6875=12.75\times x

\frac{28.6875}{12.75}=x\\\\x=2.25

So, the width of the red tile would be 2.25 inches.

5 0
2 years ago
Solve: p+2÷6 -p-3÷3 = p​
Xelga [282]

Answer:

p = -\frac{2}{3}

Step-by-step explanation:

  • you have to simplify the left side of the problem first
  • the 2 p's cancel each other out
  • now you have to do order of operations

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

  • 2 ÷ 6 = 1/3
  • -3 ÷ 3 = -1

1/3-1 = p

p= -\frac{2}{3}

7 0
2 years ago
Four more than seven times a number is 12.” Write an equation that represents the statement. Then solve.
Leona [35]

7x + 4 = 12

7x = 12-4

7x = 8

x = 7/8

3 0
3 years ago
Quadratic equation has 5x+0 as a linear factor what value is a zero of the associated quadratic function.
natka813 [3]

9514 1404 393

Answer:

  x = 0

Step-by-step explanation:

The zero is the value of x that makes the linear factor zero:

  5x +0 = 0

  5x = 0 . . . . . simplify

  x = 0/5 = 0 . . . . divide by 5

The associated zero is x = 0.

7 0
2 years ago
Need help fast please thanks
murzikaleks [220]

Answer:

c = 41 ft

Step-by-step explanation:

To solve this problem, we can use the pythagorean theorem, which is defined by the formula a^2+b^2=c^2. We are given both the lengths of the legs, so all we need to do is to plug them both in and solve for c:

9^2+40^2 = c^2\\c^2 = 81 + 1600\\c^2 = 1681\\c = 41

This is the first option.

8 0
3 years ago
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