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Julli [10]
3 years ago
6

Solve for x: 12=-2(x+8)

Mathematics
2 answers:
liberstina [14]3 years ago
7 0
Your answer would be : x=-14
erastova [34]3 years ago
6 0
<span>12=-2(x+8)
-----------
Simplify and flip
</span>12=-<span>2<span>(x+8<span>)
</span></span></span>12=<span>(-2)(x)+<span>(-2)<span>(8<span>)
</span></span></span></span>12=-2x+-16
12=-<span>2x-<span>16
</span></span>-2x-16=<span>12
</span>-------------
Add 16 on each side
<span><span>-2x-16</span>+16</span>=<span>12+16
</span><span><span>-2x</span></span>=<span>28
</span>-----------------
Now, divide each side by -2
-2x ÷ -2 = 28 ÷ -2
x = -14
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One of the errors made by Margie by saying the set of numbers 0, 1, -1, -21, 4, 3 is that the -21 should be the first number on the list.

The given set of numbers is:

0, 1, -1, -21, 4, 3.

Margie says that the set of numbers above is in order from least to greatest

Kindly note that:

The negative number with the highest magnitude is the lowest

The positive number with the highest magnitude is the highest

Arranging this number by carefully following the note above, the set of numbers above from the least to greatest is:

-21, -1, 0, 1, 3, 4

It is obvious that Margie made a mistake in arranging the numbers, and one of the mistake is that the -21 should be the first number on the list since it is the most negative

Learn more here: brainly.com/question/25874786

6 0
2 years ago
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An altitude is drawn from the vertex of an isosceles triangle, forming a right angle
romanna [79]

Answer:

  • 54 in

Step-by-step explanation:

Use Pythagorean to find the missing side x of the triangle.

<u>It is a hypotenuse with other sides 18 in and half of 15 in:</u>

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<u>The perimeter is:</u>

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7 0
2 years ago
What are the coordinates of the orthocenter of △JKL with vertices at J(−4, −1) , K(−4, 8) , and L(2, 8) ?
kompoz [17]

Answer:

K(-4,8) is the ortho center.

Step-by-step explanation:

In a right angled triangle, The vertex of the right angle is the ortho center.

Here we are given

J(-4,-1), K(-4,8) & L(2,8)

Using distance formula we get

JK^{2}= (-4+4)^{2}+ (8+1)^{2}=0+81=81

KL^{2}= (-4-2)^{2}+ (8+-8)^{2}=36+0=36

JL^{2}= (-4-2)^{2}+ (8+1)^{2}=36+81=117

So we can say that

JK^2 + KL^2=JL^2

By converse of pythagorean theorem we get

Hence the Vertex of the right angle is K(-4,8)

K(-4,8) is the ortho center.

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3 years ago
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ICE Princess25 [194]
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What properties will you use next to solve the equation
ella [17]

Answer:

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Step-by-step explanation:

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