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sergeinik [125]
3 years ago
7

What are the solutions to 2x^2+7x=4? Select all that apply.

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0
<span><span><span>2<span>x2</span></span>+<span>7x</span></span>=4</span>Step 1: Subtract 4 from both sides.<span><span><span><span>2<span>x2</span></span>+<span>7x</span></span>−4</span>=<span>4−4</span></span><span><span><span><span>2<span>x2</span></span>+<span>7x</span></span>−4</span>=0</span>Step 2: Factor left side of equation.<span><span><span>(<span><span>2x</span>−1</span>)</span><span>(<span>x+4</span>)</span></span>=0</span>Step 3: Set factors equal to 0.<span><span><span><span>2x</span>−1</span>=<span><span><span>0<span> or </span></span>x</span>+4</span></span>=0</span><span><span>x=<span><span><span>12</span><span> or </span></span>x</span></span>=<span>−4</span></span>Answer:<span><span>x=<span><span><span>12</span><span> or </span></span>x</span></span>=<span>−<span>4</span></span></span>
gladu [14]3 years ago
4 0
There are two answers
1/2 and -4
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If M &lt;1 = 115 degrees what is m &lt;2
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Answer:

M<2= 65

Step-by-step explanation:

The reason it is 65 because 2 angles add up to either 90 or 180 and in this case it would be 180.

You would use angle addition postulate to find the answer so M<1 + M<2 = 180.

Since M<1 is 115 you would substitute it into the formula so 115 + M<2 = 180

Then you would subtract 115 from 180 in which you would get M<2 = 65

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see below

Step-by-step explanation:

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P( a prime number and a multiple of two)

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P( a prime number and a multiple of two) = 1/6 = .17

P(3 or a prime number)

The prime numbers are 2,3,5  and 3 is included in this list so we have 3 outcomes

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P( 3 or a prime number) =3/6 =1/2= .5

P(3 U Multiple of 2)

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P( 3 or a prime number) =4/6 =2/3= .67

P(2 U Even number)

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P( 2 U Even number) = number of outcomes / total outcomes

P( 3 or a prime number) =3/6 =1/2= .5

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3 years ago
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Step-by-step explanation:

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It is correct because if you do the math you will come up with 48 - 24k = 48 - 24k
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3 years ago
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