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
meriva
3 years ago
7

Can someone explain and steps on how to do this please

Mathematics
1 answer:
aleksley [76]3 years ago
8 0

Answer:

66.4°

Step-by-step explanation:

\cos \: m\angle B =  \frac{2}{5}  \\  \cos \: m\angle B =  0.4 \\ m\angle H = { \cos}^{ - 1} (0.4) \\ m\angle B = 66.421821522 \\  \huge \red{ \boxed{m\angle H = 66.4 \degree}}

You might be interested in
Which is the best estimate of the sum of the fractions 5/12+5/9
Bumek [7]

Answer:

0.926

Step-by-step explanation:

5/12 as a decimal is 0.416 and

5/9 as a decimal is 0.5 repeating

You just have to turn the fraction into a decimal and

add those together.

So your final equation would be 0.416+0.5

8 0
4 years ago
Read 2 more answers
The new dolphin tank at the aquarium has a radius of 75 feet and a height of 20 feet. What is the volume of the dolphin tank? Ro
Travka [436]

Answer:

9,420.0 cubic feet

Step-by-step explanation:

8 0
3 years ago
Your neighbor will pay you $9.00 to wash his car. How many full hours will you now have to babysit (at $10.00 an hour) so you ca
Ber [7]
Will you will have to babysit like 6 hours cause you got pay only 9 from the car wash and 10x5=50 + the 9 car wash is 59 only and u will need the .95 so u will need 6 hours of babysitting for the .96
8 0
2 years ago
Read 2 more answers
Given the quadratic function : f(x)=x^24x-12<br> Find the vertex.<br> Can you show the steps?!?
vlada-n [284]
\bf \textit{vertex of a vertical parabola, using coefficients}&#10;\\\\&#10;\begin{array}{llcccl}&#10;\stackrel{f(x)}{y} = & 1x^2& +4x& -12\\&#10;&\uparrow &\uparrow &\uparrow \\&#10;&a&b&c&#10;\end{array}&#10;\qquad &#10;\left(-\cfrac{ b}{2 a}\quad ,\quad   c-\cfrac{ b^2}{4 a}\right)&#10;\\\\\\&#10;\left(-\cfrac{4}{2(1)}~~,~~-12-\cfrac{4^2}{4(1)}  \right)\implies (-2~~,~~-12-4)\implies (-2~~,~~-16)
6 0
3 years ago
Angle J and angle M are base angles of an isosceles trapezoid JKLM. If angle J=20x+9 and angle M =14x+15, find angle K
anzhelika [568]
K or l will be 151 degrees.

j and m are equal to each other, giving you x=1, substitute this in to get j and m equal 29 degrees.  k or L are opposite angles meaning they add up to 180 when added to j and m so j+l=180 or m+k=180
5 0
3 years ago
Read 2 more answers
Other questions:
  • Watching tv: in 2012, the general social survey asked a sample of 1310 people how much time they spend\t watching tv each day. T
    5·1 answer
  • Rowena is proving that AD ≅ EB. Which statement does the ♣ represent in her proof?
    12·2 answers
  • 4x/5-12=20 PLEASE I REALLY NEED HELP
    14·1 answer
  • What is the slope of the hypotenuses of the triangles in simplest form?
    7·1 answer
  • What is the best first step to solve the inequality 5x - 322?
    13·1 answer
  • WILL GIVE BRAINLIEST!!!!!!!!!!!
    15·1 answer
  • 100 POINTS AND BRAINLIEST<br><br> please answer #4 and #5
    11·2 answers
  • 4x = 2 + 3x<br><br> Solve please.
    7·1 answer
  • In the city of Carmen, there is a drawbridge that is opened twice per hour over the summer. The graph below shows the number of
    10·1 answer
  • Given the polynomial function below find F(-4) f(x)=2x^ 2 -x + 9
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!