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Alik [6]
3 years ago
7

Solve for x in the triangle.Round your answer to the nearest tenth.

Mathematics
2 answers:
enyata [817]3 years ago
5 0

sin = opposite/hypotenuse

sin 40° = 12/x

Cross multiply.

0.64278760968x = 12

Divide both sides by sin 40°.

x = 18.7 (rounded to nearest tenth).

guapka [62]3 years ago
3 0

Answer: 18.7

Step-by-step explanation:

From the diagram opposite side = 12

hypotenuse side=X

θ= 40⁰

Sinθ= opposite/hypotenus

Sin40= 12/X

Cross multiply

Xsin40° = 12

Divide bothside by sin40°

X = 12/sin40°

x= 12/0.64279

X= 18.6686

X=18.7

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7 0
2 years ago
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6 0
3 years ago
Find the value of x such that 365 based seven + 43 based x = 217 based 10.
Pepsi [2]

We need to find the base x in the following equation:

365_7+43_x=217_{10}

First, lets convert 365 from base 7 to base 10. This is given by

365_7=3\times7^2+6\times7^1+5\times7^0

where the upperindex denotes the position of eah number. This gives

\begin{gathered} 365_7=3\times49+6\times7+5\times1 \\ 365_7=147+42+5 \\ 365_7=194_{10} \end{gathered}

that is, 365 based 7 is equal to 194 bases 10.

Now, lets do the same for 43 based x. Lets convert 43 based x to base 10:

43_x=4\times x^1+3\times x^0

where again, the superindex 0 and 1 denote the position 0 and 1 in the number 43. This gives

43_x=(4x+3)_{10}

Now, we have all number in base 10. Then, our first equation can be written in base 10 as

194_{10}+(4x+3)_{10}=217_{10}

For simplicity, we can omit the 10 and get

194+4x+3=217

so, we can solve this equation for x. By combining similar terms. we have

197+4x=217

and by moving 197 to the right hand side, we obtain

\begin{gathered} 4x=217-197 \\ 4x=20 \end{gathered}

Finally, we get

\begin{gathered} x=\frac{20}{4} \\ x=5 \end{gathered}

Therefore, the solution is x=5

8 0
1 year ago
So here's information before I say the question
zysi [14]

What you have to do is multiply 21 by 2. it is 42. $42 dollars was the original price of the bookcase.

3 0
3 years ago
What is the unit rate of $200 for 18ft
sergejj [24]
I hope this helps you




if 18 ft 200$



1 ft ? $



?.18=200.1



?=200/18



?=11,111111
5 0
3 years ago
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