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
Sveta_85 [38]
3 years ago
8

PLEASE HELP ME FIND THE LENGTH

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
7 0

Answer:

Length of arc AB is,

= 2πr (angle between AB) /360

=2×3.14×90/360

=1.57 cm

victus00 [196]3 years ago
5 0

For this case we have that by definition, the arc length of a circle is given by:

AL = \frac {x * 2 \pi * r} {360}

Where:

x: Represents the angle between AB. According to the figure we have that x = 90 degrees.

r = 7.9 \ cm

So:

AL = \frac {90 * 2 \pi * 7.9} {360}\\AL = \frac {90 * 2 * 3.14 * 7.9} {360}\\AL = \frac {4465,08} {360}\\AL = 12.403

Answer:

12.4\ cm

You might be interested in
Choose the equation that represents the graph below.
alekssr [168]
The equation is y = -2/3x + 6
5 0
3 years ago
Read 2 more answers
a lighthouse casts a 128 footshadow a nearby lampost that measures 5 feet 3inches cast an 8 Foot Shadow
k0ka [10]
5 times 3 times 8 is the correct answer, because it's like finding the volume.<span />
8 0
3 years ago
4x^2=27x+40<br> Solve by factoring
worty [1.4K]

Answer: hewo, there! your answer is below

x= -5/4

or x= 8

Step-by-step explanation:

step 1: Subtract 27x+40 from both sides.

4x2−(27x+40)=27x+40−(27x+40)

4x2−27x−40=0

Step 2: Factor left side of equation.

(4x+5)(x−8)=0

Step 3: Set factors equal to 0.

4x+5=0 or x−8=0

hope this helps you

have a great Day

Plz makr branilest

8 0
3 years ago
The vertices of a square CDEF are C(1,1), D(3,1), E(3,-1) and F(1,-1). What formulas prove that the diagonals are congruent perp
Oxana [17]

To prove that the diagonals are congruent, you need to formula to compute the distance between two points:

d(A,B) = \sqrt{(A_x-B_x)^2 + (A_y-B_y)^2}

Using that formula, you may prove that d(C,E) = d(D,F), which means that the two diagonals have the same length.

To prove that they are perpendicular, you need the formula to compute the slope of a segment. The slope, knowing the enpoints, is given by

m = \cfrac{\Delta y}{\Delta x} = \cfrac{A_y-B_y}{A_x-B_x}

You can use this formula to prove that

m_{CE} = -\cfrac{1}{m_{DF}}

In fact, if one slope is the opposite of the reciprocal of the other, the two segments are perpendicular.

Finally, to prove that they bisect each other, you first need to find the point where they meet. First of all, you need to find the line the segments lie on: the formula is

y-y_0 = m(x-x_0)

where (x_0,y_0) is one of the points belonging to the line, and you already know how to find the slope. Then, you find the point of intersection, say A, by solving the system involving the two lines:

\begin{cases} y= m_{CE}x+q_{CE}\\ y = m_{DF}x+q_{DF} \end{cases}

And use again the formula for the distance between two points to prove that

d(A,C) = d(A,D) = d(A,E) = d(A,F)

4 0
3 years ago
joel has an average salary of 34840 works 40 hours a week 52 weeks a year.how much money he makes per hour
seropon [69]
40*52= 2080

34840 / 2080 = $16.75 an hour
5 0
3 years ago
Other questions:
  • Cos(x)= 9/7. What does x equal?
    15·1 answer
  • PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
    14·2 answers
  • Can soneone help me with these basic vector math problems?!
    8·1 answer
  • What is two fifths plus one fourth plus one tenth
    6·1 answer
  • The weights of a bat in a zoo are normally distributed with a mean of 2.2 pounds and a standard deviation of 0.3 pounds. About w
    6·1 answer
  • how much money would you have if you invested £800 fof 11 years at a compound interest rate of 5% per month.​
    14·1 answer
  • 1) Shaley plans to use $200 she earned from her
    9·1 answer
  • The first term of a geometric sequence is 3 and the comaon ratio is 5 find the 8th term.
    11·2 answers
  • 1. Which angles in the picture are NOT supplementary
    6·2 answers
  • The length of a rectangle is increasing at a rate of 6 cm/s and its width is increasing at a rate of 5 cm/s. When
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!