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lubasha [3.4K]
3 years ago
6

A circle has a radius of 9 cm and a sector of the circle has an arc length of 9. 7cm

Mathematics
1 answer:
frutty [35]3 years ago
7 0

Answer:

S = R θ      where θ is in radians

If θ  = 2 pi then S = 2 pi R       the circumference of the circle

θ = S / R = 9.7 / 9 = 1.08 rad

Since 1 rad = 360 / (2 pi) = 57.3 deg

the angle included = 1.08 rad * 57.3 deg/rad = 61.9 deg

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Explain how you would write 7\8 as a rate per 100?
Lubov Fominskaja [6]
100:8=12.5\\\\\frac{7}{8}=\frac{7\times12.5}{8\times12.5}=\frac{87.5}{100}
6 0
4 years ago
1. Identifique a abscissa e a ordenada dos pontos abaixo.
Arte-miy333 [17]

Answer:

A(3,-5) abscissa:3 ordenada: -5

B(-1,0) abscissa: -1 ordenada: 0  

C(-3,5;-2) abscissa: -3.5 ordenada -2

D(0,-1) abscisa: 0 ordenada:- 1

Step-by-step explanation:

What we must take into account is that the abscissa is the value of x and the ordinate is the value of y. There is always a number of the (x,y), that is, the abscissa is the first value and the ordinate is the second value, therefore:

4 0
4 years ago
Read 2 more answers
Sales tax on a $400 stereo is $16. What is the tax on a $650 tv?​
lana66690 [7]

Answer:

$2.6

Step-by-step explanation:

firstly we find percentage of tax .

(16/400) * 100

= 16/4

= 4 %

now ,

so 4% of 650

= (4*650)/ 100

=260/100

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6 0
3 years ago
The sum of squares of two consecutive positive even integers is 52 more than their product. Find these numbers.
natulia [17]

Answer:

The first set of consecutive even integers equals (8 , 6)

The second set is ( - 8 and - 6) which also works.

Step-by-step explanation:

Equation

(x)^2 + (x + 2)^2 = (x)(x + 2) + 52            Remove the brackets on both sides

Solution

x^2 + x^2 + 4x + 4 = x^2 + 2x + 52        Collect the like terms on the left

2x^2+ 4x+ 4 = x^2 + 2x + 52                  Subtract right side from left

2x^2 - x^2 + 4x - 2x + 4 - 52  =  0          Collect the like terms

x^2 + 2x - 48 = 0                                     Factor

(x + 8)(x - 6) = 0

Answer

Try the one you know works.

x - 6 = 0

x = 6

Therefore the two integers are 6 and 8

6^2 + 8^2 = 100

6*8 + 52  = 100

So 6 and 8 is one set of  consecutive even numbers that works.    

========================

What about the other set.

x + 8 = 0

x = - 8

x and x + 2

- 8  and -8 + 2 = - 8, - 6

(- 8 )^2 + (- 6)^2 = 100

(-8)(-6) + 52 = 100

Both sets of consecutive numbers work.


5 0
3 years ago
Read 2 more answers
How does the value of 2 dimes compare to the value of 2 dollars
Luba_88 [7]
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</span>
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3 years ago
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