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
Alika [10]
3 years ago
10

HELP me with These questions

Mathematics
1 answer:
Feliz [49]3 years ago
5 0

Answer: 13.96 in²

<u>Step-by-step explanation:</u>

  • radius (r)

d = 2r

16 = 2r

8 = r

  • angle in radians (θ)

\frac{180}{\pi} =\frac{25}{\theta}

180(θ) = 25(π)

      θ  = \frac{25}{180}\pi

      θ  = \frac{5}{36}\pi

  • Area (A)

A = \frac{1}{2}r² θ

   = \frac{1}{2}(8)^{2}(\frac{5}{36}\pi)

   = \frac{40}{9}\pi

   = 13.96

*************************************************************************

Answer: 12π

<u>Step-by-step explanation:</u>

s = rθ

  = 60(\frac{\pi }{5})

  = 12π

*************************************************************************

Answer: 22.440 cm²

<u>Step-by-step explanation:</u>  

A = \frac{1}{2}r²θ

   = \frac{1}{2}(10)²(\frac{\pi} {7})

   = \frac{50}{7}\pi

   = 22.440

*************************************************************************

Answer: 270°, 630°, -450°, -810°

<u>Step-by-step explanation:</u>  

positive:  -90 + 360 = 270

                                    270 + 360 = 630

negative: -90 - 360 = -450

                                   -450 - 360 = -810

*************************************************************************

Answer: \frac{3\pi} {4}

<u>Step-by-step explanation:</u>  

  \frac{19\pi} {4} - 2\pi

= \frac{19\pi} {4} - \frac{8\pi} {4}

= \frac{11\pi} {4}

\frac{11\pi}{4} - 2\pi

= \frac{11\pi} {4} - \frac{8\pi} {4}

= \frac{3\pi} {4}

If you subtract another 2π, you will end up with a negative value.  The question asks for the smallest positive value.

You might be interested in
Consider the given vector equation. r(t) = 2eti + 3e−tj (a) find r'(t). r'(t) = &lt;2et,−3e−t&gt; (b) sketch the plane curve tog
Fofino [41]
(a) Differentiate each of the components to get r'(t). The rule is
.. d/dt (a*e^(bt)) = a*b*e^(bt)
The answer you have shown is the correct one.

(b) See the figure. The red curve is the position r(t) for 0 ≤ t ≤ 2. The dashed orange line is the tangent line, whose equation is
.. L(t) = r(0) +r'(0)*t = (2 +2t)i +(3 -3t)j

6 0
3 years ago
If a+b=10 and ab=24, find the values of a and b.​
Vlad [161]
The values of a and b are 4 & 6
5 0
2 years ago
Determine the intercepts of the line.<br> x-intercept:( , ) <br> y-intercept:( , )
Nastasia [14]

Answer:

x-intercept: (-7,0)

y-intercept: (0,2)

Step-by-step explanation:

The x-intercept is (-7,0) because on the graph we can see that the line lies on the x-axis on the point (-7,0).

The y-intercept is (0,2) because we can see that the line pass through the y-axis on the (0,2) point.

Hope this helps you :)

7 0
3 years ago
Read 2 more answers
3x − 1/2(8x − 2) = 4 step 1: 3x − 4x 1 = 4 step 2: x 1 = 4 step 3: x 1 − 1 = 4 − 1 step 4: x = 3 which step was the error made a
Mrrafil [7]
3x-1/2(8x-2)=4
3x-4x+1=4
-x=3
X=-3
8 0
3 years ago
Tommy has a pet monkey. Every day, his monkey eats 4 apples in the morning. The monkey also eats two bananas for every banana to
Kipish [7]
So, if tom eats 10 bananas in 10 days

than, monkey have eaten 40 apples and 20 bananas 

hope this helped

8 0
3 years ago
Other questions:
  • What is the reason for each step in the solution of the equation? 3+4x−3x=4 Drag and drop the reasons into the boxes to correctl
    10·2 answers
  • Please answer fast.
    6·2 answers
  • The Fall Festival charges $0.75 per ticket for the rides. Kendall bought 18 tickets for rides and spent a total of $33.50 at the
    10·2 answers
  • If 18 more than 2 times a number is -10, what is the number?
    13·1 answer
  • If a cell displaying #DIV/0! contains the formula =C2/D9, what must be the value of cell D9?​
    8·1 answer
  • F(x) = log10 (x) + 5
    11·1 answer
  • Lilian purchased a violin form smash music stores. It regularly sold for $670, but wa son slaw for 10% off. She also had to pay
    12·1 answer
  • PLEASE ANSWER !!!
    12·1 answer
  • What is the supplementary angle of 30 degrees?
    11·1 answer
  • Need help asap PLS HURRY
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!