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avanturin [10]
3 years ago
11

Simplify this -2x+(9x-4)

Mathematics
2 answers:
11111nata11111 [884]3 years ago
5 0

Answer:

7x-4

Step-by-step explanation:

<u><em>step 1  </em></u>-2x+ 1 (9x-4)

Pretend there is an imaginary 1 in front of the parenthesis then, multiply 9*1  and 1*-4.

<u><em>step 2</em></u>  -2x + 9x -4

combine the numbers in bold which is -7x.

Answer-  7x -4

Maurinko [17]3 years ago
4 0

Answer:    7x-4

Step-by-step explanation:

Combine like terms. -2+9= 7. Therefore 7x-4 is the answer.

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Find the equation of a line that passes through (5,-3) and is perpendicular to y = x.
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3 years ago
18 + 4(3x - 7) = -70
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4 0
3 years ago
A lumberyard will deliver wood for $7 per board foot plus a delivery charge of $10. Find a function C(x) for the cost (in dollar
Paladinen [302]

Answer:

C(x) = 7x + 10

Step-by-step explanation:

If the delivery charge is $10 for any number of board feet ordered.

If the delivery charge is $10 for each board feet ordered, the function would

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4 0
3 years ago
What is the height, x, of the equilateral triangle?
e-lub [12.9K]

Using the Pythagorean Theorem, the height of the equilateral triangle is given by:

A. h = 7\sqrt{3} inches.

<h3>What is the Pythagorean Theorem?</h3>

The Pythagorean Theorem relates the length of the legs l_1 and l_2 of a right triangle with the length of the hypotenuse h, according to the following equation:

h^2 = l_1^2 + l_2^2

For this problem, we have that:

  • The height is one side of the triangle.
  • The other side is half the length, of 7 in.
  • The hypotenuse is the length, of 14 in.

Hence the height is found as follows:

h^2 + 7^2 = 14^2

h = \sqrt{147}

h = \sqrt{49 \times 3}

h = 7\sqrt{3} inches.

More can be learned about the Pythagorean Theorem at brainly.com/question/654982

#SPJ1

7 0
2 years ago
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