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Sergio039 [100]
3 years ago
12

What are the solution of the equation 2|×+7|-3=5​

Mathematics
1 answer:
marin [14]3 years ago
6 0

Answer:

x = -3

Step-by-step explanation:

2(x + 7) - 3 = 5     (given)

2x + 14 - 3 = 5     (Distributive Property)

2x + 14 = 8           (Addition Property of Equality)

2x = -6                  (Subtraction Property of Equality)

x = -3                    (Division Property of Equality)

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Because you can't divide 5 evenly
4 0
3 years ago
The height of a wooden pole, h, is equal to 15 feet. Ataut wire is stretched from a point on the ground to the top of the pole.
Taya2010 [7]

The question is incomplete. Here is the complete question:

The height of a wooden pole, h, is equal to 15 feet. A taut wire is stretched from a point on the ground to the top of the pole. The  distance from the base of the pole to this point on the ground, b. is equal to 8 feet. What is the length of the wire?

Answer:

Length of wire = 17 feet

Step-by-step explanation:

Given:

The height of the wooden pole is, h=15\ ft

The distance from the base of the pole to this point on the ground is, b=8\ ft

Let the length of the wire be 'l'.

Now, consider the triangle formed by the pole, the base, and the wire. The length of the wire is the slant length and hence the hypotenuse of the triangle.

Using Pythagorean theorem, we can find the hypotenuse.

(Hypotenuse)^2=(height)^2+(base)^2\\l^2=h^2+b^2

Plug in the given values and solve for 'l'. This gives,

l^2=15^2+8^2\\\\l^2=225+64\\\\l^2=289\\\\l=\sqrt{289}\\\\l=\pm17

As length can never be negative, we ignore the negative result.

Therefore, the length of the wire is 17 feet.

7 0
3 years ago
i kind of know its C need 2nd opinion A tire manufacturer took a random sample of 50 tires and found that 3 were defective. In a
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It's kind of not C.

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Hint: Cross-multiply the proportion, then do what you need to do.

6 0
3 years ago
The sum of the angle measures in a 21-gon is
Dominik [7]

Answer:

180

Step-by-step explanation: The exterior angles sum to 360 and there are 21

6 0
3 years ago
Need help solving this problem
ANTONII [103]
Here is the solution for the eqns.

6 0
3 years ago
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