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timofeeve [1]
3 years ago
12

3x + 1 = 7 What is the value of x?

Mathematics
1 answer:
Olin [163]3 years ago
5 0
The value for X is 2
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Write 0.22222.... as a fraction
Bad White [126]

Answer:

\frac{2}{9} or 2/9

Step-by-step explanation:

Any single digit integer over 9 is the same as the integer repeating in decimals.

8 0
3 years ago
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Number form for 525.048
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Five hundred twenty-five and forty-eight thousandths
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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.
dmitriy555 [2]

see the attached figure to better understand the problem

we have that

cos(A)=\frac{1}{5} \\ AB=12\ units\\ CD=2\ units

Step 1

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

we know that

in the right triangle ABC

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

substitute the values in the formula

AC=12*(1/5)\\ AC=2.4\ units

Step 2

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

we know that

in the right triangle ABC

Applying the Pythagorean Theorem

AB^{2} =AC^{2}+BC^{2}\\ BC^{2}=AB^{2} -AC^{2}

substitute the values

BC^{2}=12^{2} -2.4^{2}\\BC^{2}= 138.24\\ BC=11.76\ units

Step 3  

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

we know that

in the right triangle BCD

Applying the Pythagorean Theorem

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

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3 years ago
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20 is a factor of 24 true or false
igor_vitrenko [27]
False, 20 is not a factor of 24
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What is 451.568 rounded to the tenths place.
PSYCHO15rus [73]
It will be 451.6 because 5 is tents place 68 is big number so u add 1 + 5 = 6
Answer 451.6
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3 years ago
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