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
aksik [14]
3 years ago
5

Find the value of y. Round your answer to nearest tenth. Please help

Mathematics
1 answer:
iren [92.7K]3 years ago
6 0

9514 1404 393

Answer:

  (c)  52.0

Step-by-step explanation:

The angle whose cosine is 8/13 is found using the inverse cosine function:

  y° = arccos(8/13) ≈ 52.0°

  y ≈ 52.0

__

The calculator button to compute this value is probably labeled cos⁻¹. You may need to access the function using a <em>Shift</em> or <em>2nd</em> key. The calculator must be set to degrees mode to prevent the answer from appearing in radians or grads. If you use a spreadsheet, your formula may look like ...

  =DEGREES(ARCCOS(8/13))

You might be interested in
Write a polynomial that represents the length of the rectangle<br><br> help please !!
disa [49]

Answer:

\textsf{Length}=0.8x^2-0.7x+0.7\quad \sf units

Step-by-step explanation:

Area of a rectangle = width × length

Therefore, to find the length of the rectangle, we need to divide the area by the width.

Using long division:

\large\begin{array}{r}0.8x^2-0.7x+0.7\phantom{)} \\x+0.5{\overline{\smash{\big)}\,0.8x^3-0.3x^2+0.35x+0.35\phantom{)}}}\\-~\phantom{(}\underline{(0.8x^3+0.4x^2)\phantom{-b))))))))))))))}}\\0-0.7x^2+0.35x+0.35\phantom{)}\\ \underline{-~\phantom{()}(-0.7x^2-0.35x)\phantom{-b)))))}}\\ 0.7x+0.35\phantom{)}\\\underline{-~\phantom{()}(0.7x-0.35)}\\ 0\phantom{)}\end{array}

Therefore, the <u>length</u> of the rectangle is:

0.8x^2-0.7x+0.7

5 0
2 years ago
Kim, Laura and Molly share £385
trapecia [35]
Set x equal to the amount of money Kim gets, and y for Molly's money.

 x = 2/5y, since the ratio is 2:5.
y = 105 + x, since Molly has 105 more pounds than Kim.

Substitute x into this equation, so that y = 105 + 2/5y. Subtract 2/5y from both sides to get 3/5y = 105. Divide each side by 0.6 (equivalent to 3/5) and you get y = 175, which is how much Molly has. Kim gets 2/5 of Molly's share (or 105 fewer pounds), so she has 70.

70 + 175 (Kim and Molly's shares) is equal to 245. Therefore, Laura receives the remaining 140 pounds.

140/385 = a/100
Cross multiply so that 385a is 14000. Divide by 385 to get 36.4 (rounded).

Thus, Laura receives about 36.4% of the total money. Hope this helps (:
5 0
3 years ago
What is 3.2 as a fraction
Anastasy [175]
3.2
=3+2/10
=3+1/5
=16/5
5 0
3 years ago
Factor the GCF: −12x4y − 9x3y2 + 3x2y3
monitta
Factor the coefficients:
-12=(-1)(3)(2^2)
-9=(-1)(3^2)
3=3

The greatest common factor (GCF) is 3

Next we find the GCF for the variable x.
x^4
x^3
x^2
The GCF is x^2.

Next GCF for variable y.
y
y^2
y^3
the GCF is y

Therefore the GCF is 3x^2y
To factor this out, we need to divide each term by the GCF,
(3x^2y)(−12x4y/(3x^2y) − 9x3y2/(3x^2y) + 3x2y3/(3x^2y) )
=(3x^2y)(-4x^2-3xy+y^2)     
if we wish, we can factor further:
(3x^2y)(y-4x)(x+y)
3 0
3 years ago
My has 3 times more books that grant , and grant has 6 f
Klio2033 [76]

I’m not sure what happened while you were writing this, but if I’m reading it right, “My” has 18 books. If “My” has 3 times as many as 6, that also means 3 times 6, which is 18.


7 0
3 years ago
Other questions:
  • A man can harvest his farm in 18 hours. his son can harvest the same farm in 12 hours. how long will it take them working togeth
    6·2 answers
  • What is the derivative of a function?
    10·1 answer
  • What is the value of y in the equation, 4(2y+1)=2(y-13)
    12·1 answer
  • Find<br>a,b<br>such<br>that 7.2, a, b, 3 are in A.P.​
    7·1 answer
  • Beach ball with diameter of 24 inches what is the volume of air in the beach ball to the nearest of a cubic foot?
    10·1 answer
  • Classify the triangle.<br><br>obtuse<br><br>equiangular<br><br>right<br><br>acute
    12·2 answers
  • What is the common denominator of 3 4 and 5 8
    15·1 answer
  • On which number line are -4 and its opposite shown? (3 points)
    7·1 answer
  • Four less than twice a number is 16
    15·1 answer
  • Funke gets #2.50 as pocket money. She spends 75 k and saves the rest. What is the ratio of her savings to the amount she spends?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!