1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Likurg_2 [28]
3 years ago
6

Determine value of a

Mathematics
1 answer:
S_A_V [24]3 years ago
6 0

For this case we have that by definition of trigonometric relations that the sine of an angle is equal to the opposite leg to the angle on the hypotenuse. That is to say:

Sin (43) = \frac {a} {26}

Clearing the value of "a":

a = 26 * sin (43)\\a = 26 * 0.68199836\\a = 17.73195736

Rounding off we have:

17.7

Answer:

Option B

You might be interested in
Solve for y: 3x – 2y > 12 ​
garri49 [273]

Step-by-step explanation:

3x-12>2y

Y<1.5x-6 i think this is correct answer

6 0
3 years ago
Read 2 more answers
Find a particular solution to the nonhomogeneous differential equation y'' + 4 y = cos(2x) + sin(2x).
alukav5142 [94]
The characteristic solution follows from solving the characteristic equation,

r^2+4=0\implies r=\pm2i

so that

y_c=C_1\cos2x+C_2\sin2x

A guess for the particular solution may be a\cos2x+b\sin2x, but this is already contained within the characteristic solution. We require a set of linearly independent solutions, so we can look to

y_p=ax\cos2x+bx\sin2x

which has second derivative

{y_p}''=(-4ax+4b)\cos2x+(-4bx-4a)\sin2x

Substituting into the ODE, you have

y''+4y=\cos2x+\sin2x
\implies4b\cos2x-4a\sin2x=\cos2x+\sin2x
\implies\begin{cases}4b=1\\-4a=1\end{cases}\implies a=-\dfrac14,b=\dfrac14

Therefore the particular solution is

y_p=-\dfrac14x\cos2x+\dfrac14x\sin2x

Note that you could have made a more precise guess of

y_p=(a_1x+a_0)\cos2x+(b_1x+b_0)\sin2x

but, of course, any solution of the form a_0\cos2x+b_0\sin2x is already accounted for within y_c.
6 0
3 years ago
with vertices D(2, 5), E(6, 4), and F(3, 3), is reflected across the line A student determined one of the vertices on the image
Nezavi [6.7K]
The vertices of the image reflected over the line y = x are:
D´( 5 , 2 ),  E´( 4, 6 ) and F´( 3, 3 ).
So ( 2, -5 ) is incorrect and it could be incorrectly reflected across over the x-axis.

<span> 
</span>
6 0
4 years ago
The U.S. Post Office is interested in estimating the mean weight of packages shipped using the overnight service. They plan to s
pshichka [43]

Answer: A. Approximately 0.017 pounds

Step-by-step explanation:

Formula to find the margin of error :

E=z^*\dfrac{s}{\sqrt{n}} , where z* = critical value for confidence interval , s= standard deviation , n= sample size.

As per given , we have

s= 0.15 pound

n= 300

Critical value for 95% confidence = 1.96

Then, Margin of error for 9%% confidence interval will be :

E=(1.96)\dfrac{0.15}{\sqrt{300}}\\\\=0.0169740979142\approx0.017

Hence, they can expect a margin error of 0.017 pound (approximately.)

Thus , the correct answer is A. Approximately 0.017 pounds

5 0
3 years ago
Please help with math
Dvinal [7]

Answer:

blahhh

Step-by-step explanation:

blah blah bh b

4 0
3 years ago
Read 2 more answers
Other questions:
  • Can you guys help me here please
    11·1 answer
  • USA Today reported that approximately 25% of all state prison inmates released on parole become repeat offenders while on parole
    8·1 answer
  • It has been observed that electrical connectors manufactured by Jolt Electrical Supply Company last an average of 18.2 months an
    7·1 answer
  • Write three decimals that are equivalent
    15·1 answer
  • Please help I don’t know how to do this
    12·1 answer
  • Suppose you know the area of a circle and the measure of the central angle of a sector. Describe the process of finding the area
    15·1 answer
  • As Jupiter revolves around the sun, it travels at a speed of approximately 8 miles per second. Convert this speed to miles per m
    7·1 answer
  • Plsss help me and explain it too thanks!
    10·1 answer
  • What is the slope of the line shown below (3,-2) (2,4)?<br> A. -2<br> B. -1/2<br> C. 1/2<br> D. 2
    15·2 answers
  • IQ scores for adults age 20 to 34 years are normally distributed according to N(120, 20). In what range does the middle 68% of p
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!