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inessss [21]
3 years ago
7

Round your answer to the nearest hundredth AB=

Mathematics
2 answers:
ANEK [815]3 years ago
7 0

Step-by-step explanation:

\sin(20)  = 3 \div  x

Multiply both sides with <em>x</em> :

x \times  \sin(20)  = 3

And divide both sides with <em>sin(20)</em> :

x = 3 \div  \sin(20)  = 8.771

Which gives us <em>x</em><em>=</em><em>8</em><em>,</em><em>7</em><em>7</em><em>1</em>

Hatshy [7]3 years ago
5 0

Answer:

AB = 6

Step-by-step explanation:

sin 20° = 3/?

\frac{1}{2} = \frac{3}{x}

cross-multiply: x = 6

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|3 - 5 + 7|.<br><br>O 15<br>O 5<br>O -15<br>O -5​
Aliun [14]

Answer:

5

Step-by-step explanation:

The answer is 5

because 3 - 5 = -2

and -2 + 7 = 5

so the answer is 5

4 0
3 years ago
What is the square root of 9/49 <br> answer has to be a fraction :)
soldi70 [24.7K]

Answer:

3/7

Step-by-step explanation:

√9 = 3

√49 = 7

√9/49 = 3/7

4 0
3 years ago
Read 2 more answers
Write the series using summation notation. Then find the sum of the series.
ivolga24 [154]

Hello, please consider the following.

\displaystyle 1+2+3+...+12=\sum_{k=1}^{k=12} {k}=\dfrac{12*13}{2}=6*13=78

For the second we will need to put on the same denominator.

\displaystyle \dfrac{1}{2}+\dfrac{1}{4}+...+\dfrac{1}{14}=\sum_{k=1}^{k=7} {\dfrac{1}{2k}}\\\\=\dfrac{1}{2}\dfrac{420+210+140+105+84+70+60}{5*7*3*2*2}\\\\=\dfrac{1}{2}\dfrac{1089}{420}\\\\=\dfrac{1089}{840}=1.296429...

Thank you.

3 0
3 years ago
Pls help
katrin [286]
I’m pretty sure it’s added, subtracted, added !
3 0
3 years ago
Solve this equation 4log√x - log 3x =log x^2​
ruslelena [56]

Answer:

x =  \frac{1}{3}

Step-by-step explanation:

*Move terms to the left and set equal to zero:

4㏒(√x) - ㏒(3x) - ㏒(x²) = 0

*simplify each term:

㏒(x²) - ㏒(3x) - ㏒(x²)

㏒(x²÷x²) -㏒(3x)

㏒(x²÷x² / 3x)

*cancel common factor x²:

㏒(\frac{1}{3x})

*rewrite to solve for x :

10⁰ = \frac{1}{3x}

1 = \frac{1}{3x}

1 · x = \frac{1}{3x} · x

1x = \frac{1}{3}

*that would be our answer, however, the convention is to exclude the "1" in front of variables so we are left with:

x = \frac{1}{3}

5 0
3 years ago
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