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
HACTEHA [7]
3 years ago
8

Identify BR rounded to the nearest tenth. HELP PLEASE!!

Mathematics
1 answer:
ahrayia [7]3 years ago
5 0

Answer:

<h2>BR ≈ 49.0</h2>

Step-by-step explanation:

Use cosine:

cosine=\dfrac{adjacent}{hypotenuse}

We have

adjacent=42\\hypotenuse=BR\\\alpha=31^o

\cos31^o\approx0.8572

Substitute:

\dfrac{42}{BR}=0.8572

\dfrac{42}{BR}=\dfrac{8,572}{10,000}          <em>cross multiply</em>

8,572BR=420,000                <em>divide both sides by 8,572</em>

BR=\dfrac{420,000}{8,572}

BR\approx49.0

You might be interested in
Please help me with question 2
WARRIOR [948]

Answer:

sin(-a)= -15 /17

Step-by-step explanation:

Alright, lets remember that sin(x) is odd function, which means that

wherever you watch an expression like this: sin(-a), you can use the odd functions property, and turn it like the following

sin(-a)= - sin(a)

Now, other thing to remember: (sin(x))^{2}+(cos(x))^{2}=1

So, we can obtain any value for sin(x) function starting from the opposite function, cos(x), using the following:

sin(x)=\sqrt{1-(cos(x))^{2} }

So, if cos(a)= - 8 / 17, using the above equation we obtain the value for sin(a)

sin(a)=\sqrt{1 - (cos(a))^{2} } = \sqrt{1 - ( \frac{8}{17} )^{2}  }= \sqrt{\frac{225}{289} }  =15/17

Using the odd function property, we get the following result

sin(-a)= - sin(a) = -15/17

6 0
3 years ago
If 4 pairs of socks costs $10. 00, how many pairs of socks can be purchased for $22. 50?.
klasskru [66]
9 pairs.

If 4 pairs of socks cost $10.00 and you have $22.50 to spend then you can buy 9 pairs of socks leaving you with $0.00 left over.
Each pair of socks cost $2.50.
5 0
2 years ago
3 feet = _______ inches<br><br> help plzz :(
Romashka [77]

Answer:

36 inches

Step-by-step explanation:

We know that 1 ft = 12 inches

2 ft = 2 * 12 = 24 inches

3 ft = 3*12 = 36 inches

3 0
3 years ago
Read 2 more answers
Solve −4 = −(−k − 86)+10
kvasek [131]
K= 100
 
You use distributive property 
<span>
Step 1: </span><span>−(−k)−1(−86)+10=−4

Step 2: </span><span>k−1(−86)+10=−4

Step 3: </span><span>k+86+10=−4

Step 4: </span><span>k+96=−4

Step 5:  </span><span>k=−96−4

Step 6:  </span><span>Subtract </span>4<span> from </span><span>−96</span><span> to get </span><span><span><span>−100</span>.</span></span>
3 0
3 years ago
Read 2 more answers
What is an advantage that experimental probability has over theoretical probability?
DIA [1.3K]

C. It is not always possible to calculate theoretical probability in complex situations, but experimental probability can be calculated any time experiments can be run.


8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the greatest common factor!<br> Please help with these 2 questions
    14·2 answers
  • Find positive numbers x and y satisfying the equation xy=12 such that the sum 2x+y is as small as possible.
    10·1 answer
  • the doctor recommended that Matt increase the number of calories he consumed from 2000 to 2800. By what percent did the number o
    13·1 answer
  • The population of a small town is currently 6000. This population grows at roughly 1.6% per year. In how many years will the pop
    6·1 answer
  • Help please. i am desperate
    9·1 answer
  • Find the area of the shaded region<br><br> helpp!!
    9·1 answer
  • Which of the following is the final step in bisecting a line segment? (5 points)
    10·1 answer
  • Bu soruyu yapın arkadaşlar acill lütfen yapanı en iyi seçip takip edicem 5 yıldız koyucam<br>​
    15·1 answer
  • Pls say fast :( its my online test
    14·2 answers
  • Help once again. this is 6th grade work so uhh help
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!