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Naddik [55]
3 years ago
10

2x+22=4(x + 3). Can you help?

Mathematics
2 answers:
kozerog [31]3 years ago
8 0
2x+22=4(x+3)
2x+22=4x+12
2x+10=4x
10=2x
5=x

Hope this helps :)
enot [183]3 years ago
5 0
First, you will start with distributive property. on the right side you will distribute 4 into x and 3.

the equation will become:
2x + 22 = 4x + 12

then you have to get x on only one side of the equal sign. subtract 2x from 4x and the equation becomes:
22 = 2x + 12

subtract 12 from 22:
10 = 2x

divide 10 by 2:
5 = x
or
x = 5

(:
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Right triangles abc and dbc with right angle c are given below. If cos(a)=15,ab=12 and cd=2, find the length of bd.
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see the attached figure to better understand the problem

we have that

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cos (A)=(AC/AB)\\AC=AB*cos(A)

substitute the values in the formula

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Step 2

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we know that

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substitute the values

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Step 3  

<u>Find the value of BD</u>

we know that

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BD^{2} =DC^{2}+BC^{2}

substitute the values  

BD^{2} =2^{2}+11.76^{2}

BD=11.93\ units

therefore

<u>the answer is</u>

the length of BD is 11.93 units

8 0
3 years ago
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